128 CRUISE OF THE STEAMER CORWII^. 



not yet been catalogued, and it is impossible therefore to say how many species there are in the 

 lots received, but it is certain that the collection is one of the best and most valuable that has 

 ever been received by the Museum from Bering Sea, and Is of very great importance for a correct 

 knowledge of the fiiuna of that region. 



The Arctic shell fauna has been examined in the North Atlantic region by so many expedi. 

 tions that, considering the wide distribution of most Arctic species, it is hardly to be expected that 

 many new things are to be found aiiywliere within the limits of the Arctic Sea. Yet there was in 

 Captain Healy's drcdgings a shell which proved to be not merely a new sjyeeies but a itew genus. 

 This very unexpected "find" leads to the hope that more novelties remain to be secured even in 

 the Arctic region. 



MARINE INVERTEBRATES. 



The collection includes sea-urchins, starfish, ophiuraus, holothurians, alcyonian corals, sea 

 anemones, hydroids, worms, and crustacea. 



Especially worthy of notice are the following species: 



Sea-urchins: Strongi/locentrotus Brobachiensis. Locality: Off Hotham Inlet and off Point 

 Hope. 



Starfish : Asterias acerrata. Locality: Lat. 66° 7' N., long. 168° 45' W., and lat. 65° 55' 15" 

 N., long. 108° 9' 30" W. 



Ophiurans: Ami)hiura squamata. Locality: Ofif Point Hope. 



PLANTS. 



The collections of plants forming a iiartof the accessions 15278 (received November, 1881) and 

 15382 (received December, 1884) was sent to the late Prof. Asa Gray for identification. They 

 have not yet been returned, and since Professor Gray's death has occurred during the interim it 

 seems improbable that the identifications have been made. 



ROCKS. 



The only rocks collected were some specimens of serpentine and quartzite from Jade Mountain, 

 on the Kowak Kiver, and hornblende andesites from the recent volcanic islaud of Bogasloff, in 

 Bering Sea. 



