550 PILSBRY AND VANATTA 



Islands. The present collection was made mainly on the west 

 side of Albemarle and the adjacent shore of Narboro, from 

 which islands only three species have hitherto been recorded. 



In the list compiled from all sources by Dr. Stearns the total 

 of marine species is 267, 102 of which he identified from the 

 Albatross and other collections in the U. S. National Museum. 

 The present list enumerates loi species, of which about 25 are 

 not included in the several lists quoted by Stearns. It is likely 

 that the number now known from the islands is much less than 

 one half of the total number of littoral species, as very few small 

 and minute forms have been recorded. Moreover, it is obvious 

 that in the catalogue as it now stands, the identifications are of 

 unequal value, and some clearly require revision ; a work which 

 cannot profitably be undertaken with the material now available 

 in any one museum. 



CATALOGUE OF SPECIES. 



PELECYPODA. 



Family Arcidae. 

 Area multicosta Sowb., Tagus Cove, Albemarle. 

 Area solida B. and S., Tagus Cove, Iguana Cove and Point Christo- 

 pher, Albemarle. 



Area velata Sowb., Tagus and Iguana Coves and Point Christopher, 

 Albemarle. 



Area retieulata Gmel., Tagus Cove and Point Christopher, Albe- 

 marle ; Narboro. 



Family Pernidae. 



Perna ehemnitziana Orb. (?), Tagus Cove, Albemarle. 



Family Ostreidae. 

 Ostrea mexieana Sowb., Narboro. 

 Ostrea rosaeea Sowb., Tagus Cove, Albemarle. 



Family Anomiidae. 

 Plaeunanomia foliata Brod., Tagus Cove, Albemarle. 



Family Peetenidae. 

 Peeten magnifieus Sowb., Tagus Cove and Narboro, opposite Tagus 

 Cove. 



