1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 299 



the rules of noineuclature we should uot returu to Coutliouy's origiual 

 specific uame, but adopt the specific name which was rightfully iu use 

 when the geuus Admete w^as erected npou it. Heuce the uame will be 

 Admete couthouyi Jay, sp. 



Mangilia levideiisis Caqoeiiter. 



M. levidetisis Cpr. Suppl. Rep., 1863, p. 658. 



M. funebi'ale DaU. Am. Joiirii. Couch., /. c, p. 100, 1871. 



The types of Carpenter's species iu the National Museum are so 

 rough, worn, and dilapidated that it was only by the accident of having 

 a badly worn specimen of funehrale to identify that I was enabled to 

 discover their identity. A fresh specimen which Dr. Carpenter exam- 

 ined was returned by him to the geological survey of California, to 

 whom it belonged. The WM^e funehrale should be cancelled. 



MangiUa? aleutica Dall. (PI. Ill, fig. 6.) 

 M. aleutica Dall, I c, p. 99, 1871. 



This form was regarded as nearest to Beta angulosa (G. O. Sars, 1878), 

 which differs from it by being shorter and yet having one more whorl. 

 B. angulosa is also generally more uniformly and sharply sculptured. 



Bela sculpturata Dall. (PI. IV, fig. 7.) 



Shell seven- whorled, turreted, white, with strong waxen yellow epi- 

 dermis; thin, with strong sculpture; transverse sculpture of, on the last 

 whorl, ten strong squarish ribs and numerous fine and occasionally im- 

 pressed lines of growth ; longitudinal sculpture of a distinct angulation 

 of the whorl, in front of the anal fasciole, which on the transverse ribs 

 develops into stout swellings, which in the earlier whorls are con- 

 nected by an obscure rib ; the whole surface of the whorl is covered 

 with rather wide and shallow grooves and their even wider interspaces; 

 the grooves are closest and fiuest on the canal and behind the angula- 

 tion, and faintest or nearly absent on the periphery; anal notch very 

 shallow, fasciole nearly obsolete. Operculum short, triangular, yel- 

 lowish brown. Greatest length of shell 12.3, of aperture 5.5 ; greatest 

 width of shell 4.5™™. Habitat: Aleutian region, Chiachi Islands, etc., 

 to the Queen Charlotte Islands and Vancouver district. 



This shell can only among European species be compared with Sars's 

 angulosa^ than which it is more coarsely and rudely sculptured (the 

 figure does not show this feature with sufiBcient emi3hasis), the trans- 

 verse ribs less or not at all flexuous, the longitudinal sculpture less fine 

 and much less uuitbrmly distributed. The Alaskan shell is also some- 

 what stouter in the same length than the Norwegian one. 



Bela alaskensis Dall. (PI. IV, fig. 3.) 



MangiUa f alaskensis Dall, I. c, p. 98, 1871. 



Bela alaskensis Krause, Wiegm. Arch., 7. c, p. '279, pi. xviii, figs. 5, 17, 1885. 



Dr. Krause has figured a particularly smooth and white specimen, 

 but I have found since my original description was published that the 



