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11 results for “Enopla”
FIGURES 1016 in A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand
FIGURES 1016. Vulcanonemertes rangitotoensis gen. et sp. nov. 10, Transverse section through the junction between the pyloric canal and intestine. IN, intestine. PR, proboscis. 11, Transverse section through a cephalic blood vessel to show the appearance of the vacuolar 'pouches'. 12, Transverse section through a lateral nerve cord to show the accessory lateral nerve, indicated by an arrow. LN, lateral nerve cord. 13, Transverse section through a lateral nerve cord with the accessory lateral nerve, indicated by an arrow, running separately above it. 14, Transverse section through a lateral nerve cord in a region where the accessory lateral nerve has divided to form two neural tracts. 15, Transverse section through an efferent excretory tubule. 16, Transverse section through part of the head to show the appearance of the cephalic glands. CG, cephalic glands. DE, dermis.
FIGURES 38 in A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand
FIGURES 38. Vulcanonemertes rangitotoensis gen. et sp. nov. 3, Transverse section through part of the body wall in the foregut region, showing the organisation of the body wall muscle layers. The diagonal muscle layer is indicated by an arrowhead. LM, body wall longitudinal muscle layer. 4, Transverse section through the stomach region to show the thin circular somatic muscle layer, indicated by arrows. The anterior pouches of the intestinal caecum are indicated by stars. PR, proboscis. RC, rhynchocoel. ST, stomach. 5, Transverse section through the foregut region to show how the cephalic glands extend behind the brain as lateral blocks of tissue, and the dorsoventral muscle fibres, indicated by arrows, passing on either side of the lateral blood vessels and nerve cords. CG, cephalic glands. LM, body wall longitudinal muscle layer. LN, lateral nerve cord. LV, lateral blood vessel. 6, Transverse section to show the organisation of the anterior portion of the proboscis. PE, proboscis epithelium. RC, rhynchocoel. 7, Transverse section through part of the head, showing oblique and radial muscle fibres running between the cephalic glands. CG, cephalic glands. CO, cerebral sensory organ. 8, Transverse section through the proboscis stylet bulb to show five accessory stylet pouches. The stylet bulb canal is indicated by an arrow. RC, rhynchocoel. SB, stylet basis.
FIGURE 2 in A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand
FIGURE 2. Vulcanonemertes rangitotoensis gen. et sp. nov. Camera lucida drawing through the stomach region in crosssection to show the arrangement of the various body structures. AS, acidophilic spheres; CG, cephalic gland; CM, body wall circular muscle layer; DE, dermis; DM, body wall diagonal muscle layer; DV, middorsal blood vessel; EP, epidermis; EX, excretory tubule; LM, body wall longitudinal muscle layer; LN, lateral nerve cord; LV, lateral blood vessel; PR, proboscis; RC, rhynchocoel; ST, stomach.
FIGURE 1 in A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand
FIGURE 1. Vulcanonemertes rangitotoensis gen. et sp. nov. Drawings of a complete specimen (A) and enlargement of the head viewed dorsally (B), based on sketches made in life, to emphasise the distribution of the eyes and appearance of the posterior pair of cephalic furrows.
FIGURES 1720 in A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand
FIGURES 1720. Vulcanonemertes rangitotoensis gen. et sp. nov. 17, Transverse section through part of the head to show two of the ocelli. 18, Transverse section through one of the short, anterior cephalic furrows; the arrow indicates a ciliated canal leading to a cerebral sensory organ. EP, epidermis. 19, Transverse section through an ovary to show an egg. OV, ovary. 20, Transverse section through the posterior region of the body showing several of the basophilic, vacuolar structures (indicated by arrows) which are interpreted as some form of parasite. IN, intestine.
FIGURES 15–20. Korotkevitschia pelagica. 15 in Redescription of Korotkevitschia pelagica (Korotkevitsch, 1961) (Enopla: Hoplonemertea: Cratenemertea), a pelagic nemertean from Antarctica
FIGURES 15–20. Korotkevitschia pelagica. 15, Oblique section through the anterior part of stomach to show the mouth opening, indicated by an arrow. ST, stomach. 16, Transverse section through pylorus, indicated by an arrow. IC, intestinal caecum; PR, proboscis. 17, Transverse section through the middle region of the body. Lateral nerve cords are indicated by arrows. IN, intestine. 18, Transverse section through the middle part of the rectum. The middorsal blood vessel is indicated by an arrow. LN, lateral nerve cord, RE, rectum. 19, Transverse section through the posterior part of the rectum showing sphincter of circular muscle (indicated by arrows). PC, posterior commissure of the nerve cords. 20, Transverse section through the testis. A lateral blood vessel is indicated by an arrow. IN, intestine; LN, lateral nerve cord; TE, testis.
FIGURES 9–14. Korotkevitschia pelagica. 9 in Redescription of Korotkevitschia pelagica (Korotkevitsch, 1961) (Enopla: Hoplonemertea: Cratenemertea), a pelagic nemertean from Antarctica
FIGURES 9–14. Korotkevitschia pelagica. 9, Transverse section through the stylet region of the proboscis. CE, "clot" of extracellular gel; SP, stylet pouch with accessory stylets. 10, Transverse section through the proboscis just behind stylet region to show subepithelial acidophilic glands (indicated by arrows). CE, "clot" of extracellular gel. 11, Oblique section through the anterior part of the head showing circumrhynchodaeal glands (indicated by arrows). 12, Transverse section through the left lateral nerve cord (LN) to show the band of connective tissue with myofibrils (indicated by an arrow). 13, Oblique section through the cerebral organ to show the sensory canal, indicated by an arrow. BR, brain; CO, cerebral organ; LP, lateral pouches of intestinal caecum. 14, Transverse section through the efferent canal (indicated by an arrow) of the excretory system. IN, intestine; LN, lateral nerve cord.
FIGURE 8 in Redescription of Korotkevitschia pelagica (Korotkevitsch, 1961) (Enopla: Hoplonemertea: Cratenemertea), a pelagic nemertean from Antarctica
FIGURE 8. Korotkevitschia pelagica. Schema of organization of middle proboscis portion. AG, acidophilic glands; CE, "clot" of extracellular gel; GE, outer glandular epithelium; IC, inner circular muscle layer; LM, longitudinal muscle layer; NS, neural sheath; OC, outer circular muscle layer; OE, outer epithelium of posterior proboscis portion; PN, proboscis nerve; PP, posterior proboscis chamber; SP, stylet pouch with accessory stylets.
FIGURE 1 in Redescription of Korotkevitschia pelagica (Korotkevitsch, 1961) (Enopla: Hoplonemertea: Cratenemertea), a pelagic nemertean from Antarctica
FIGURE 1. Korotkevitschia pelagica. Schema of internal organization of anterior portion in lateral view. BR, brain; CG, cephalic glands; CM, body wall circular muscle layer; CO, cerebral sensory organ; CR, circumrhynchodaeal gland cells; CV, cephalic blood vessel; DC, dorsal cerebral commissure; DE, dermis; EX, excretory tubules; FO, frontal organ; LM, body wall longitudinal muscle layer; LN, lateral nerve cord; LV, lateral blood vessel; LP, lateral pouches of intestinal caecum; PS, precerebral septum; RC, rhynchocoel; RD, rhynchodaeum; RM, cephalic retractor muscles; RP, rhynchopore; RS, rhynchodaeal sphincter of circular muscles; ST, stomach; VC, ventral cerebral commissure; VP, vascular plug of dorsal blood vessel.
FIGURES 2–7. Korotkevitschia pelagica. 2, Oblique section through a in Redescription of Korotkevitschia pelagica (Korotkevitsch, 1961) (Enopla: Hoplonemertea: Cratenemertea), a pelagic nemertean from Antarctica
FIGURES 2–7. Korotkevitschia pelagica. 2, Oblique section through a frontal organ. FO, frontal organ. Cephalic retractor muscles are indicated by arrows. 3, Oblique section to show body diagonal muscles, indicated by arrows. 4, Oblique section through the stomach wall. The stomach protrusion is indicated by the black arrow, the longitudinal fibres around the stomach wall are indicated by white arrows; ST, stomach. 5, Oblique section through the canal of the cerebral organ. The sensory canal is indicated by an arrow, the radial fibres are indicated by arrowheads. BR, brain; CO, cerebral organ. 6, Oblique section through the anterior part of the rhynchodaeum. The circumrhynchodaeal glands are indicated by an arrow. RD, rhynchodaeum; ST, stomach. 7, Oblique section through the rhynchocoel wall.
FIGURE 9 in A new genus and species of monostiliferous hoplonemertean (Enopla: Hoplonemertea: Monostilifera) from New Zealand
FIGURE 9. Vulcanonemertes rangitotoensis gen. et sp. nov. Drawings of the central stylet and basis from a young specimen (A), with a stylet:basis ratio of about 2:1, and from a larger individual (B) where the ratio is about 1:1. CS, central stylet. SB, stylet basis.
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