2ia 



MOLLtlSCA OF BEtllNG ISLAND. 



FAtriTAL SUMMARY— Continued. 



Species of Conmiander Islands. 



Velutina cryptospira 



Piliscus comiuocUis 



Cicpidulii ujraiidis 



liitorina sitkana 



Litoriua var. siibteuobroaa . . . 



Litorina var. atkaua 



Lacuna vincta 



llaliKoncha reflexa 



Nat ica clausa 



Nalica russa 



Tachyrhyncbus eroaa. 



Triohotropis insignis 



Tiitnniuiu orcsoueuse 



Cerithiopsis ste.ine^eii 



Margarita heliciua 



Margarita vorticifera 



Margarita varicosa 



Purpura lima 



Tropbon truncatus 



Stronibella var. stejnegeri 



Tritonofu.sus Kroyeri 



Chrysodoraus liratus 



Chry.sodonius apitzbergenais. 



Volutbarpa anipullacea 



Astyris rosacea 



Buccinuiu tenue .. 



Buccinum var. mcirchiauum.. 



Buccinuiu percrassum 



Pleurototua (Bela) violacea... 



Pleurotonia beringi 



Pbolas crispata 



" Pholadidea poni ta 



Saxicava rugosa 



Mya truncata 



Cuspidaria var. beringensia. . 



Siliqua patula 



Mactra falcata 



Macoma middendortfi 



Tapes staminea 



Cardium gronlandiciim 



Cardiuni blanduni 



Pisidiuui (Eqiiilaterale 



Modiolaria discors 



Modiolaria lasvigata (var. ?) .. 



Modiola modiolus 



Mytilus edulis 



Pecteu (?) alaskensis 



Placunanomia macroscbisma. 



Total, 74 species 



Collected by — 



45 



Kanj^e. 



28 



44 



(?) 



There is doubtless quite a number of species which would be revealed 

 by dredging, which is a difficult task in such seas for persons whose 

 busy time is precisely that season of the year when dredging can best 

 be done. It is probable, however, that the additions thus made would, 

 like the eighty per cent, of additions now chronicled, ouly confirm the 

 remarks with which my report closed (1. c, p. 349). 



"These figures show that the fauna of* the Commander Islands, as 

 far as known, is intimately related to the general Arctic fauna, and 

 especially to the Aleutian fauna, somewhat less so to the Kamchatka 

 fauna, but presents in itself nothing distinctive. While the faunal as- 

 pect of the mollusca is boreal, there is a number greater than might be 



