Figure 2. Tubulanus riceae n in Tubulanus riceae new species (Nemertea: Anopla: Palaeonemertea: Tubulanidae), from South Florida, Belize and Panama

Figure 2. Tubulanus riceae n. sp. transverse sections, except A, C, D, N. Scale bar lengths in parentheses. (A) Fixed anterior third of specimen; bracket denotes post-fixation staining band (1 mm). (B) Body wall; epidermis with variety of glandular cells (15 mm). (C) Sagittal section showing transverse musculature (star) passing between the epidermal mucus cells and the rhynchodeal glandular cells (rdg) (6 mm). (D) Sagittal section showing oblique (diagonal) musculature (oval) (6 mm). (E) Ventral ganglia (star) and ventral commissure (arrowhead) (12 mm). (F) Middle region of the cerebral sensory organ (star) (12 mm). (G) Putative ocellar pigment (oval) (12 mm). (H) Middle of lateral sensory organ (star), lateral blood vessel (lbv), lateral nerve cord (lnc) and inner circular muscle passing under foregut (arrow) (12 mm). (I) Testes (star) with mature sperm (12 mm). (J) Ovary with single maturing oocyte (14 mm). (K) Anterior of cephalic region, apical organ (oval) and epidermal brown pigment (star). (L) Anterior-most region of proboscis, proboscis nerves (star), subdorsal nerve (sd) and rhynchodeal nerve (circled) (6 mm). (M) SEM of surface of everted proboscis (5 mm). (N) Frontal section through right cerebral ganglion showing neurocord cell (oval) (20 mm). (O) Excretory duct (ed) (50 Mm). (P) Main nephridial tubule (upper part of oval) and cyrtocytes projecting into lateral blood vessel (lower part of oval) (50 Mm).