The Opisthobranchiata of South Africa. 51 



Chromodoris, from rocky bottom with many sponges in a depth of 

 23 fms. 



The very hardened specimens varied in length from 11 to 16 mm. 

 and resembled each other. The largest was 9 mm. broad by a 

 height of 3-5 ; the height of the rhinophores nearly 2 ; the diameter 

 of the gill aperture 1, the height of the gill-leaves 1*5, the breadth of 

 the brim of the back 3, the breadth of the foot 3-5, and the length of 

 the tail 1*5 mm. — The animal was of a uniform white colour, with 

 small black roundish and more irregular spots spread over the back, 

 sometimes too on the foot-brim ; the brim of the back had perhaps 

 been of another colour. 



The form longish oval, with the broad brim of the back somewhat 

 undulating. The back appeared under the lens covered all over 

 with very small closely set tubercles of a height and diameter of 

 about 0*10 mm. ; the black points much larger than the tubercles, 

 measuring up to 03 mm. The rhinophores with about 20 lamellae 

 and prominent end-papilla. The gill containing 5 tripinnate leaves. 

 The tentacles appeared as very small prominences on the sides of 

 the head. The brim of the foot not narrow, the tail short. 



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

 0'12 mm. ; the otocysts a little smaller, crowded with otokonia. 



The small tubercles of the skin (fig. 1) with many cellular glands 

 and spicules (fig. 2). The skin as well as the interstitial tissue 

 crowded with calcified cells and long spicules. 



The whitish bulbus pharyngeus about 3 mm. long, with prominent 

 rasp-sheath; the lip disc clothed with a nearly colourless cuticle. 

 The rasp of the tongue was nearly colourless and seemed to contain 

 about 30 series of plates, the rasp-sheath about 30, the total number 

 of rows thus being about 60. In the series on both sides of the 

 rhachis (fig. 3) about 100 plates. The plates nearly colourless, the 

 height of the 3 innermost , 04-0*05-0 , 06, the height rising to 

 0-3 mm.; in the outermost it was 0-06-0-10-0-12-0-14-0-16-0-20, 

 0-25. They were of the usual hook form (figs. 3, 4) ; the 3 outer- 

 most being always of another form, erect, with rounded, finely 

 pectinated end (fig. 4). 



The salivary glands white, long, flattened. The posterior visceral 

 mass (liver) 5'5 mm. long by a breadth of 3 ; flattened on the under 

 side, yellowish. 



The anterior genital mass 3*5 mm. long, whitish; the penis as 

 well as the vagina without armature. 



The tail of this animal is short, scarcely projecting behind the 

 back, otherwise it resembles the D. punctulifera, B. (Neue 



