82 Transactions of the South African Philosophical Society. 



covered by the veiy tliick layer of the whitish hermaphrodite 

 gland. 



The hermaphrodite gland showed ripe genital elements in its lobes. 

 The anterior genital mass in one of the two individuals 3, in the other 

 6 mm. long, i-ounded quadrangular in circumference, plano-convex, 

 whitish and white. As far as could be determined by the hardened 

 state of the organ, the relations of the prostata and the seminal bags 

 were as in the typical species. The muscular part of the seminal 

 duct not short, passing gradually into the somewhat thicker, whitish 

 penis of a length of about 1 mm. The glans armed in the usual way 

 with hooks, this armature for a short distance continued up into the 

 seminal duct, and in one individual the anterior end of the armature 

 freely projecting from the glans (fig. 11) for a length of 0-28 mm. 

 and with a diameter of 006 ; the height of the small hooks hardly 

 exceeding 00055 mm. 



NUDIBRANCHIATA KLADOHEPATICA. 



R. Bergh, System, I.e., 1892, pp. 999-1070. 

 Fam. TKITONIID^. 



R. Bergh, System der Nudibranchiaten Gasteropoden, 1892, 

 pp. 1060-1070. 



The family contains the typical Tritoniui of Cuvier and the 

 MarioniiB of Vayssiirc, the Tritoniopsis of Eliot,- moreover the 

 Atthilidffi t with perfoliated rhinophores, which character otherwise 

 is not seen in the Tritoniidae, and now the Tritonidoxse, different 

 from all other Tritoniidae by the absence of gills on the sides of the 

 back. 



• Eliot, " The Nudibrauchiata of the Antarctic Expedition." Trans of the 

 Royal Soc. of Edinburgh., xli., 3, 1905. pp. 530-532, figs. 17-20. 



Tho description of the rhinophores is rather unintelligible. 



■t R. Bergh, " Nudibranchiate Gasteropoder. ii. Don Danske Ingolf-ExDedi- 

 tion," ii., 3. IfiOO. pp. 21 24 ; tab. iii., figs. 10-20. 



