44 Transactions of the South African Philosophical Society. 



2. Archidoris ? ? SCRIPTA, Bgh. n. sp. 

 Color albidus, notaeo punctis et striolis nigris interruptus ; margine 



limbi dorsalis flavo. 



PI. XI., figs. 19-25. 



Of this form three individuals were sent, procured off the Hongazi 

 River by dredge, now unfortunately very hardened and stiff. 



The lengths of the specimens were 10, 15, and 21 mm. The 

 largest had a breadth of 13 and a height of 7 mm. ; the brim of the 

 back 4 ; the height of the gill-leaves 2*5 ; that of the rhinophores 

 2-5 ; the length of tentacles 1'5 mm. ; the breadth of the foot 5'5, 

 and the length of the tail 3 "5 mm. — The colour was white ; the back 

 showed, irregularly spread, very finely punctuated dots and stripes 

 (tig. 19) ; the margin of the brim of the back yellow ; the sole of the 

 foot with clear, grayish shades. A white intestine shone through 

 the middle of the back and of the foot. 



The circumference oval, the body somewhat depressed, the back 

 smooth, its brim rather broad ; the rhinophores and the gill with 

 its 6-leaves, both situated rather before and behind. The tentacles 

 conical ; the foot rather broad, with prominent brim, its anterior 

 margin with deep furrow and its upper lip medianly cleft; the tail 

 projecting behind the body proper. 



The central nervous system as usual. The diameter of the eyes 

 0-14 mm., the lens very yellow ; the diameter of the otocysts 010 ; 

 they were quite packed with otokonia ; in the lamellae of the club 

 of rhinophores some long, very calcified spicules of a diameter of 

 0007 mm. ; no spicules in the tentacles ; the skin of the back with 

 numerous, very calcified spicules (fig. 20), mostly of a diameter 

 of 0013-0-016 mm. 



The buccal tube strong, 2 mm. long. The whitish biilbus 

 pluiri/iujeiis 3 mm. long, with strong prominent rasp-sheath ; the 

 lip disc with nearly colourless rather thin cuticula. The tongue 

 broad ; in the clear-yellowish rasp 16 plates, in the rasp-sheath 15, 

 of which the two hindermost are not fully developed, the total 

 number of plates being thus 31. The plates nearly colourless ; the 

 height of the innermost 008, of the outermost 0-04 mm., of the next 

 0-08, rising to 0-20 mm. The number of plates in the rows up to 

 42. They were of the common hook form (figs. 21-24), the outer- 

 most somewhat different (fig. 24a), but missing (fig. 21). 



The white salivary glands flattened, lobate at the margin, 2 mm. 

 long. 



The liver 10 mm. long, brownish, its sides covered by the rather 

 thick layer of thu yellowish white hermaphrodite gland, in the lobes 



