XVII.-LIST OF DEEP-WATER MOLLUSCA DREDGED BY THE 

 UNITED STATES FISH COMMISSION STEAMER FISH HAWK IN 

 1880, 1881, AND 1882, WITH THEIR R4NGE IN DEPTH. 



By Katharine J. Bush. 



The following list is intended to include all the Mollusca dredged by 

 the Fish Hawk in the region of the Gulf Stream that have been deter- 

 miued.* In general only those species that have been taken below 60 

 fathoms are included, except the surface species inhabiting the same 

 region. 



Keferences are given to descriptions and figures of those species not 

 contained in Binney's edition of Gould's Invertebrata of Massachusetts, 

 but no complete synonomy is attempted. 



The bathymetrical range includes all stations between the southern 

 slope of George's Bank on the north and the region off Chesapeake Bay 

 on the south, unless otherwise stated. Many of the species occur far- 

 ther north, and in such cases frequently in shallower water than here 

 indicated, but no attempt has been made to show the entire distribution, 

 except in a few instances where the vertical range is given for the speci- 

 mens taken north of Cape Cod by the Fish Commission, and in the 

 Cephalopods, where some of the "Blake Expedition" specimens are 

 included. The later dredgings of the Albatross, in 1883, have in many 

 cases increased the vertical range of the species and added many others 

 to the fauna. 



The sign (*) indicates that the specimens were taken alive; those 

 that were dead are designated by a dagger (t) ; when no special mark 

 is given the specimens were living. 



CEPHALOPODA. 



DECACEEA. 



Lestoteuthis Fahricii (Licht.) Verrill. 



Gonatus Fdbricii Verrill, Trans. Conn. Acad., vol. t, p. 291, 1881. 

 Lestoteuthis Fdbricii Verrill, Trans. Conn. Acad., vol. v, p. 390, pi. 45, figs. l-2d; 

 pi. 49, figs. 1-1/; pi. 55, figs. 1-U, 1881. 



Range, 255-724 fathoms; northern, in shallow water. 



* The numljer of undetermined species is not large. They are mostly young, or small 

 species belonging to Turhonilla, Bullidce, Yoldia, Cryptodon, Montacuta, &c., or else 

 larger specimens too much eroded for accurate identification. 



[1] 701 



