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1,225 results for “land snail”
Fig. 21. Bathia madagascariensis Robson, 1914 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 21. Bathia madagascariensis Robson, 1914: (A–C) Tsingy Beanka, st'n 03/12, max. diameter 24.4 mm, NMSA L8829; (D) Tsingy de Namoroka, st'n 930/97, max. diameter 19.5 mm, NMSA L8828.
Fig. 8 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 8. Tropidophora secunda Fischer-Piette & Bedoucha, 1965, radula, NMSA L7040: (A) entire width of radula, scale bar = 200 μm; (B) rachidian and inner lateral teeth, scale bar = 50 μm; (C) outer lateral and marginal teeth, scale bar = 50 μm.
Fig. 7 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 7. Tropidophora secunda Fischer-Piette & Bedoucha, 1965: (A–C) Tsingy Beanka, st'n 03/06, max. diameter 21.5 mm, NMSA L7040; (D) Tsingy Beanka, st'n 03/06, subadult, max. diameter 20.0 mm, NMSA L7040; (E) Kelifely Plateau, max. diameter 18.8 mm, NMSA L6798; (F–H) holotype (faded), 'Madagascar', Cuming collection, max. diameter 22.0 mm, NHMUK 20110470.
Fig. 12 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 12. Ampelita andriamamonjyi sp. n.: (A–C) holotype, max. diameter 29.3 mm, height 15.1 mm, AMS C.474164; (D–F) paratype, max. diameter 27.7 mm, height 14.5 mm, NMSA L8441/T2657.
Fig. 4 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 4. Tropidophora chavani Fischer-Piette, 1949: Tsingy Beanka, st'n 15/06, max. diameter 27.0 mm, NMSA L7129.
Fig. 6 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 6. Tropidophora humbug sp. n., radula, paratype NMSA L7042/T2961: (A) entire width of radula, scale bar = 250 μm; (B) rachidian and left inner lateral teeth, scale bar = 100 μm; (C) right outer lateral and marginal teeth, scale bar = 100 μm.
Fig. 3 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 3. Acroptychia bathiei Fischer-Piette & Bedoucha, 1965, radula, NMSA L7039: (A) entire width of radula; (B) oblique view of left half row. Scale bars = 100 μm.
Fig. 5 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 5. Tropidophora humbug sp. n.: (A–C) holotype, Tsingy Beanka, max. diameter 31.5 mm, height 16.3 mm, AMS C.474165; (D–F) paratype, heavily banded specimen, Tsingy de Bemaraha, max. diameter 30.4 mm, height 14.1 mm, NMSA L8444/T2658; (G) operculum of holotype, external surface, max. diameter 11.0 mm, AMS C.474165.
Fig. 16 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 16. Ampelita beanka sp. n., genitalia, paratype, NMSA L8504/T2983: (A) entire reproductive tract; (B) external view of penial complex; (C) penis opened longitudinally to show internal folds and raised papilla at insertion of epiphallus. Abbreviations: ag – albumen gland, bc – bursa copulatrix, bcd – bursa copulatrix duct, ep – epiphallus, ga – genital atrium, hd – hermaphrodite duct, p – penis, pf – folds lining penis lumen, pp – penis papilla, prm – penial retractor muscle, sod – spermoviduct, v – vagina, vd – vas deferens.
Fig. 2 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 2. Acroptychia bathiei Fischer-Piette & Bedoucha, 1965: (A–C) Tsingy Beanka, st'n 18/06, max. diameter 23.7 mm, NMSA L7174; (D–F) Antsingimavo, st'n 04/06, NMSA L7091: (D) typical shell, max. diameter 23.0; (E) pale yellow specimen with a less elevated spire, max. diameter 21.7 mm; (F) juvenile specimen, max. diameter 14.9 mm.
Fig. 19 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 19. Ampelita namerokoensis Fischer-Piette, 1952: (A–C) typical specimen, Tsingy Beanka, st'n 07/09, max. diameter 22.1 mm, NMSA L8445; (D) depressed specimen, Tsingy Beanka, st'n 12/06, max. diameter 23.1 mm, NMSA L8440.
Fig. 1 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 1. Geographical location of study areas: (A) map of central western Madagascar showing the broader location of the karst (tsingy) formations studied (contour at 1000 m); (B) detail of the Antsingimavo karsts; (C) detail of Tsingy Beanka, dashed line represents approximate limits of the reserve; shaded area represents forested habitat on karst hills (redrawn from Middleton 2010). Legend: * – Bokarano River Cave; # – Kimanambolo Bat Cave; @ – Kinahango Cave.
Fig. 24 in New species of land snails (Mollusca: Gastropoda) from two isolated karst formations in central western Madagascar: Tsingy Beanka and Antsingimavo, with additional notes on other regional endemics
Fig. 24. Kalidos maryannae sp. n., genitalia, paratype, NMSA L8470/T2904: (A) entire reproductive tract; (B) penis opened longitudinally to show well-developed penial verge extending from epiphallus; (C) allospermatophore from bursa copulatrix, head end missing. Abbreviations: ag – albumen gland, bc – bursa copulatrix, bcd – bursa copulatrix duct, ep – epiphallus, f – flagellum, ga – genital atrium, og – oviducal gland, p – penis, ps – penis sheath, pv – penial verge, prm – penial retractor muscle, sc – spermatophore capsule, sod – sperm-oviduct, st – spermatophore tail, v – vagina, vd – vas deferens.
Fig. 2 in Land Snail Sphyradium Doliolum (Stylommatophora, Orculidae) In Ukraine And Moldova: Distribution, Habitats, Variability And Origin
Fig. 2. Centroid ordination of the shells' series from the populations of S. doliolum in Ukraine and Moldova in the space of the first three principal components: А — for РС 1 and РС2; В — for РС2 and РС3.
Fig. 3 in Land Snail Sphyradium Doliolum (Stylommatophora, Orculidae) In Ukraine And Moldova: Distribution, Habitats, Variability And Origin
Fig. 3. Ordination of all measured S. doliolum specimens from Ukraine and Moldova in the space of the first two canonical axes.
Fig. 1 in Land Snail Sphyradium Doliolum (Stylommatophora, Orculidae) In Ukraine And Moldova: Distribution, Habitats, Variability And Origin
Fig. 1. Sphyradium doliolum: A — distribution in Ukraine and Moldova (map by A. Markova); B — shells (adult and juvenile) from the Kaniv Nature Reserve (photo by K. Martynova and I. Balashov).
Figs 21–25 in Revision of the genus Prestonella (Mollusca: Gastropoda: Orthalicoidea: Bulimulidae s. l.), a distinctive component of the African land snail fauna
Figs 21–25. Prestonella radulae: (21–24) P. nuptialis (NMSA V9778): (21) central field and inner marginals (rachidian and laterals numbered), scale bar = 50 µm; (22) rachidian (R) and inner laterals, scale bar = 25 µm; (23) outer marginals, scale bar = 25 µm; (24) latero-marginal transition, scale bar = 25 µm; (25) P. bowkeri (NMSA V9816) latero-marginal transition, scale bar = 25 µm.
Figs 12–15 in Revision of the genus Prestonella (Mollusca: Gastropoda: Orthalicoidea: Bulimulidae s. l.), a distinctive component of the African land snail fauna
Figs 12–15. Prestonella nuptialis (Melvill & Ponsonby, 1894) and P. quadingensis Connolly, 1932: (12) P. nuptialis holotype, length 11.5 mm (BMNH 1905.1.26.29); (13) undamaged specimen, Cradock, length 13.3 mm (NMSA 1592); (14) P. quadingensis holotype, length 12.2 mm (NMSA J8135/T2835); (15) paratype, length 11.4 mm (BMNH 1937.12.30.7079-80).
Figs 2–6 in Revision of the genus Prestonella (Mollusca: Gastropoda: Orthalicoidea: Bulimulidae s. l.), a distinctive component of the African land snail fauna
Figs 2–6. Prestonella bowkeri (Sowerby, 1890): (2) lectotype of Bulimus (Mesembrinus?) bowkeri Sowerby, 1890, length 19.5 mm (BMNH 89.11.4.9); (3) fresh specimen, Glen Avon Falls, length 18.5 mm (NMSA V9816); (4) eroded specimen, Glen Avon Falls, length 20.5 mm (NMSA 2977); (5) Beaufort West specimen, length 17.7 mm (SAM A8171); (6) side view, length 20.5 mm (NMSA 2977).
Fig. 1 in Revision of the genus Prestonella (Mollusca: Gastropoda: Orthalicoidea: Bulimulidae s. l.), a distinctive component of the African land snail fauna
Fig. 1. Distribution of Prestonella. The genus is endemic to southern Africa, occurring in south-western Lesotho and along the southern edge of the Great Escarpment in South Africa (1000–1750 m a.s.l.); contour at 1000 m, showing approximate position of Great Escarpment.
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