258 AMERICAN JOURNAL 



more or less evident, according to the shade of the remainder of 

 the shell. Internally, the visceral area is bluish white, usually 

 washed with a faint yellowish brown, often hardly erident ; in 

 which case the area is whitish ; the successive layers of brown 

 sometimes appear externally around the apex when eroded. Tlie 

 inner margin, and to some extent the whole interior, exhibit the 

 external markings or rays, through the somewhat pellucid shell. 

 Texture hard and brittle. Epidermis exceedingly thin, usually 

 evanescent; translucent brownish. Soft parts unknown. 



Long, of largest specimen "6 in. Lat., 1"46 in. Elevation, 

 •2 in. 



This is a deep water species, at least in Bering Sea. I found 

 an abundance of beach specimens at St. George's Island, of the 

 Pribyloff group. Capt. E. E. Smith obtained two specimens on 

 the beach of False Pass, Aliaska Peninsula, near Mt. Isanotsky. 

 Dr. Carpenter writes that he had obtained young individuals, 

 probably of this species, from Japan. 



The pattern of coloration is entirely different from Gollisella{?) 

 rosacea, Cpr., both inside and outside ; it is more depressed, and 

 grows much larger than that species, which is subtropical, while 

 this is sub-boreal. From Acmwa virginea, Mull., it differs in 

 form, texture, color and pattern of coloration. I know of no 

 other species with which it can be compared. 



Cab. Dall, Carpenter, Smithsonian Institution, and Academy 

 of Natural Sciences, Philadelphia. 



AcM^A (?Collisella) hieroglyphica, n. s. Plate 17, fig. 37. 



Shell small, stout, rugged, with a subcentral, more or less 

 eroded, tipex ; moderately elevated. Muscular impression pyri- 

 form, shape of shell ovate ; exterior with rather strong white 

 ribs, 14 — 20 in number, with riblets between them ; interspaces 

 brown. Strise of growth somewhat imbricated, less prominent 

 on the|ribs. Internally white, with brown maculae on the margin 

 corresponding to the brown interspaces of the exterior. Margin 

 strongly crenulated. Spectrum pyriform, with the smaller end 

 anterior, consisting of a sharp black line forming a pyriform fig- 

 ure, with three longitudinal black lines inside of it. In the 

 larger specimen these have a faint bluish halo about them, but 

 in the smaller they are simply black on a white ground. The 

 same figure of less size is conspicuous on the outside of the 

 eroded apex. Soft parts unknown. Lon. '4, lat. -3 in. 



Hah. China. Cab. Dall and Acad. Nat. Sciences of Phila. 



This very peculiar and characteristic little shell was found in 

 one of those boxes of Chinese shells sold in the tea-shops of San 



