OF THE KERGUELEN REGION OF THE GREAT SOUTHERN OCEAN. 389 



Lamellibranchiata : 



Area (Barbatia) corpulenta, Smith. 

 *Cryptodon moseleyi, Smith. 



Glomus nitens, Jeffreys 



Lima (Limatula) sp. (?) 

 *Lyonsiella grandis, Smith. 

 *Malletia pallida, Smith. 



* Venus (Chamelcea) mesodesma, Quoy and Gaimard. 



SCAPHOPODA AND GASTEROPODA : 



*Basilissa simplex, Watson. 

 *Clathurella cola, Watson. 

 *Dentalium amphialum, Watson. 

 ,, keras, Watson. 



lanthina rotundata, Leach. 

 *Nassa dissimilis, Watson. 

 *Pleurotoma (Spivotropis) aganactica, Watson. 



* ,, (Thesbia) membranacea, Watson. 



* ,, ( ,, ) xanthias, Watson. 

 *Stilifer brychius, Watson. 



Trochus sp. (?) 



Cephalopoda : 



*IIistiopsis atlantica, Hoyle. 



POLYZOA : 



Bicellaria navicularis, Busk. 

 *Bagula margaritifera} Busk. 

 *Cellularia crateriformis, Busk. 

 * Farciminaria cribraria, Busk. 



* ,, magna, Busk, var. armata, Busk. 

 Flustra biseriata, Busk. 



Kinetoskias cyathus (Wyville Thomson). 

 ,, pocillum, Busk. 



*Menipea pateriformis, Busk. 



obsolete. N. longicoxa is one of the most slender, N. covipactum one of the stoutest species dredged by the 

 Challenger. In the one the auxiliary claws are wanting, whereas small ones are present in N. longicoxa, and in 

 every other respect they are as widely different as two species of the same genus of Pycnogonids can be. — (Hoek, 

 Zool. Chall. Exp., part 10, pp. 39, 42). 



1 [Bugula margaritifera is] a very interesting form as coming from such an extreme depth. Its structure, as in 

 most of the abyssal forms, is very delicate and transparent, and it is rooted by an infinite number of radical fibres, each 

 attached to a dead Globigerina shell or similar small particle.— (Busk, Zool. Chall. Exp., part 30, p. 42.) 



