Being Transact i on s of the S. Afr. Phil. Society. Vol. XVII. 61 



short- stalked eyes of a diameter of 0-10 mm. Hardened spicules 

 were not found either in the lamellae of the club of the rhinophores 

 or in the skin of the back. 



The yellowish pilar i/ngeal cone nearly 2 mm. long; at its base the 

 secondary salivary gland {cjl. iHyalina), consisting of two halves 

 adjoining each other. The biilbus pharyngeus, whose foremost end 

 lies in the pharyngeal cone, as usual ; at its hinder end the small 

 oval salivary glands proper. The oesophagus thicker but shorter 

 than the bulbus. The posterior visceral mass (liver) yellow, 8 mm. 

 long by a breadth of 4, truncate in front, the slit (so characteristic in 

 the Doriopsidaj) in the hinder end, 3 mm. long. 



The pericardium as usual ; the blood gland yellowish white. 



The anterior genital mass somewhat compressed, 2-5 mm. long, 

 whitish and white (the mucous gland). The glans penis provided in 

 the usual way with the (quincuncial) series of hooks ; the slightly 

 yellowish hooks (fig. 4) relatively strong, of a height up to 0-035 mm., 

 the armature continued up in the vas deferens only for a short 

 distance."-'' 



The Doriopsides vary very much in colouration ; still, this form 

 seems to represent a new species. 



2. Dor. callosa, Bgh. n. sp. 

 PL VIII., figs. 1-4. 



Two specimens were procured by dredge at " Eocky Bank" in 

 False Bay on rocky bottom in a depth of 17-27 fms. 



One of them was 15 mm. long, the other 25 mm. by a breadth of 

 15 and a height of 6 ; the height of the rhinophores 2, the brim 

 of the back 4-5 mm. broad, the diameter of the gill-aperture 3, the 

 breadth of the foot 8 (of its brim 2). — The colour was whitish, the 

 border of the back proper blackish, as also the fore-part of the back ; 

 there were besides a few black patches spread over the back. The 

 back proper showed, all over, long spicules shining through, crossing 

 each other irregularly in all directions ; on the brim the spicula were 

 more scattered, whiter, and mostly running transversely towards the 

 margin. On the under side of the brim the radiation was less 

 pronounced. 



The form somewhat elongated ; the white strongly foliated rhino- 



* In the vagina of an individual of Platydoris arrogans I found the (torn out) 

 penis of another individual (c/., my " Malacol. Unters.," ii. (Heft xii.), 1877, 

 p. 517). Sometimes individuals of Doriopsides and Pryllidiidae are seen, in 

 which thfe armature of the penis is wanting. 



