The Opisthobranchiata of South Africa. 49 



When alive it was "light-brown" in colour. In the preserved 

 state it was very stiff and hardened, and of a yellowish white colour, 

 the rhinophores only being brownish gray. 



The length of the body was 25 mm. by a breadth of 15 and a 

 height of 8; the height of the (retracted) rhinophores 2 mm.; the 

 diameter of the gill hole 5 mm.; the height of the gill-leaves 

 (retracted) 4; the brim of the back 3 mm. ; the foot 8 mm. broad, 

 its brim 2, the tail short. 



The back was of a fine chagreen texture all over ; the closely set 

 (figs. 19, 20) small papillae of a height up to 0*16 mm. The region 

 of the (retracted) rhinophores somewhat prominent. The (retracted) 

 gill composed of 8 apparently tripinnate leaves ; the projecting anus 

 subcentral. 



The eyes of a diameter of 0-16 mm., with large clear-yellow lens. 

 The lamellae of the club of the rhinophores stiffened with long 

 spicula. Coarse long spicules in quantity in the skin of the back, 

 also ascending through the papillulae and often projecting on their 

 top (fig. 20). 



The white mouth tube 2'5 mm. long. The white bulbus pharyngeus 

 4 mm. long by a height of 3, the lip disc covered by a strong 

 yellowish white cuticle, the rasp-sheath rather projecting behind 

 on the under side. The rasp of the strong tongue faint yellowish, 

 containing about 15 series of plates, in the sheath 25, the total 

 number of rows thus being 40 ; the number of plates in the rows 

 about 35. The plates were nearly colourless ; the height of the 

 outermost 0-14 mm., the height rising to 0-285. The plates were 

 of the usual hook form (fig. 21), the outermost somewhat slender 

 (fig. 22). 



The oesophagus 11 mm. long, the intestine appearing at the 

 middle of the length of the liver, bending and passing backwards 

 with a total length of 30 mm. by a diameter of 3. Its contents were 

 animal matter and quantities of spicules pointed at both ends. The 

 liver yellowish white, 12 mm. long by a breadth of 8 and a height 

 of 7 ; with a deep median fissure through the anterior half of the 

 upper side, divided by superficial furrows into several lobes, with a 

 flattening of the under side towards the right. The gall-bladder on 

 the left side of the cardia, 2 mm. high by a diameter at the summit 

 of 0-4. 



The grayish blood glands as usual. 



The hermaphrodite gland with a whitish layer covering the 

 upper side of the liver ; the lobules contained ripe genital ele- 

 ments. The anterior genital mass white and yellowish white, 

 8 mm. long by a height of 6 and a thickness of 4-5 ; the large 



4 



