182 Couthouy's Descriptions of 
cuation of the columella, which is white, glossy, and 
without any umbilicus behind it. . A thin, olive-colored, 
membranous epidermis, very easily detached, covers. the 
exterior surface. The interior is white and polished. 
Length eleven-fortieths, diameter five-fortieths of an 
inch, nearly. 
Inhabits Madsanhnsctts Bay. 
My own collection and the Cabinet of Bost. Soc. of 
Natural HK 
OssrenvarroNs. This shell very closely resembles B. 
inscilpta, Totten, but has the spire imperforate, which 
is not the case with that species. Its aspect is also 
‘something like that of Buttra canaliculata, Say, but it 
is much more inflated than that shell, and is without the — 
oblique fold on the central portion of the columella. B. 
canaliculata is almost cylindrical, rather broader at its 
base than summit ; B. Gouldii is ve: regala ovate, 
and narrower at the base. 
- In some individuals there is a tinge of guipli at the 
superior termination of the body whorl, where there is. 
usually a short indenture or sinus between the body and 
the right lip. The transverse strie are hardly percep- 
tible to the naked eye, and are occasionally interrupted 
by small, eroded spots. The spire is sometimes flat- 
tened, and presents a truncated appearance ; and often 
the outer volution forms an elevated, rounded ridge, €n- 
circling and rising above the others. Altogether; it isa 
very distinct and strongly marked species. Four speci- 
mens were obtained from the stomach of cod and had- 
dock, taken during the early part of May in about twelve 
` fathoms water, off Cohasset rocks ; and a specimen was 
