60 Transactions of the South African Philosophical Society. 



duct forms a little coil of windings (fig. la). From the anterior of 

 the mucous gland (fig. Ih) there issues a long, rather hent and 

 particular organ (fig. Ice) that opens in the vestibulum genitale * 

 (tig. Id) ; the walls of this milk-white organ are rather thick, the 

 cavity narrow (the prostatic part of a kind of vas deferens?). The 

 globular spermatotheca (tig. le) of a diameter of 325 mm., at its 

 side the much smaller pear-shaped spermatocyst. The efferent ducts 

 of the genital system absolutely unarmed. 



The systematic position of this form is very doubtful. It may, 

 perhaps, be referred to the ChromodorididuB and placed in the 

 neighbourhood of Aphelodoris. 



POEOSTOMATA. 



DORIOPSIDID.E. 

 R. Bergh, I.e., 1892, pp. llU-1122. 



I. DORIOPIS (Pease), Bgh. 



1. D. CAPENsis, Bgh. n. sp. 

 Limbus dorsalis serie macularum nigrarum ornatus. 

 PI. XIY., tig. 4. 



One specimen of this form had been taken off Unilanga Eiver 

 mouth by shi-inip-trawl. 



It was I'ather contracted and somewhat bent, rather soft. The 

 colour was yellowish white, but the brim of the back showed at the 

 margin somewhat roundish black patches ; the tip of the branchial 

 leaves grayish. The Inujth was about 18 mm. by a height of 6 and 

 a total breadth of 11, of which 3 on each side belonged to the brim ; 

 the breadth of the foot 7 mm., the brim 1-5 mm. broad, the length of 

 the tail nearly 5 mm. ; the diameter of the branchial star 7 mm., the 

 length of the gill-leaves 3 mm. 



The form was as in other Doriopsides ; the brim of the even back 

 very undulating ; the rhinophores situated far forward, the gill far 

 backward, consisting of o leaves ; tentacles were not visible ; the tail 

 of tlie foot not short, projecting behind the body proper. 



The central nervous system whitish, of usual relations, the buccal 

 ganglia situated between the salivary glands {gl. salicales). The very 



A small, roundish multicellular ganglion (genitale) was attached in the 

 neighbourhood of the vestihuluni. 



