OF THE KERGUELEN REGION OF THE GREAT SOUTHERN OCEAN. 425 



*Nymplion brevicaudatum, 1 Miers. 



* ,, fuscum, Hoek. 



Lamellibranchiata : 



Anatina elliptica, King and Broderip. 

 Astarte magellanica, Smith. 



* Cardita astartoides, 2 Martens. 

 *Crenella marionensis, Smith. 

 *Cryptodon marionensis, 3 Smith. 

 *Dacrydium meridionalis, Smith. 

 *Davila (?) umbonata, Smith. 

 *Kellia cardiformis, Smith. 



* ,, nuculina, Martens. , 



,, suborbicnlaris* (Montagu). 

 Lima (Limatula) pygmcea, Philippi. 

 . *Limopsis marionensis, Smith. 



* ,, straminea, Smith. 

 *Malletia gigantea, Smith. 

 *Modiolarca kerguelensis, Smith. 



,, trapezina (Lamarck). 



*Mytilus kerguelensis, Smith. 



,, magellanicus, Chemnitz. 



* „ meridionalis, Smith. 



*Nemra [ = Cuspidarict] kerguelenensis, Smith. 

 *Pecten aviculoides, Smith. 



* „ idaihratus, Martens. 



* „ distinctus, Smith. 

 Saxicava arctica, 5 Linne. 



1 This species [Nymphon brevicaudatum] is allied to the boreal N. brevitarse, Kroyer ; but it is distinguished by 

 its more robust form, its long and slender oculigerous tubercle, its longer tarsal joints, &c. — (E. J. Miers, Phil. Trans., 

 vol. 168, p. 213.) 



2 Cardita astartoides, as pointed out by Martens, bears a great resemblance to the North American Cardita borealis, 

 and may be regarded as the southern representative of tbat form. It certainly is more like that species than Cardita 

 velutina from South Patagonia, which we should not expect, considering how similar the fauna of that region and of 

 Kerguelen Island appear to be. — (Smith, Zool. Chall. Exp., part 35, pp. 212, 213.) 



3 Cryptodon marionensis is the southern form of Cryptodon gouldii, Philippi, and Cryptodon flexuosus, Montagu, 

 both of which species it closely resembles. — (Smith, Zool. Chall. Exp., part 35, p. 194.) 



* Two specimens from Kerguelen I cannot distinguish from this well-known European species [Kellia suborbicularis], 

 which has not, I believe, been previously met with farther south than the Canaries. — (Smith, Zool. Chall. Exp., part 

 35, p. 201.) 



5 This polymorphous species [Saxicava arctica], judging from the shells alone, is apparently distributed all ove 

 the globe. Of the animals inhabiting them we know nothing except those of northern varieties. The shells vary 

 immensely in form, thickness, and ornamentation. Those found off the South African coast are especially remarkable 

 for the great development of the spines on the posterior side, and have been raised to specific rank by Mr Sowerby 

 under the name of Saxicava spinifera. Many localities have already been cited for this species, and among them may 



