546 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
1907. Pelonaia corrugata Redikorzew, Ann. Mus. Zool. Acad. St. Peters- 
bourg, vol. 11, pp. 132, lol, 152, 154. 
1908. Pelonaia corrugata Bjerkan, Tromsoe Mus. Aarshefter, no. 25, pp. 61, 
114. 
1909. Pelonaia corrugata Hartmeyer, Bronn's Tier-reich., vol. 3, suppl., 
p. 1356. 
The external appearance of the New England specimens is thus 
described by Stimpson (1851), who called the species P. arenifera: 
"The body is elongated, clavate, of a brownish color, and covered 
with grains of sand; the apertures 
are placed on two small white 
mammilHform protuberances at 
the smaller extremity. It in- 
habits deep water; the specimens 
were obtained from eighteen fath- 
oms about ten miles east of the 
Boston Lighthouse." 
The only good specimens that 
the writer has had the opportun- 
ity of examining are a few small 
ones collected by J. F. Whiteaves, 
in the Gulf of Saint Lawrence 
(^Yhiteaves, 1874, gives these 
localities: west side of Cape Bre- 
ton Island, and in Northumber- 
land Straits). A poorly preserved 
specimen from Murray Bay, Gulf 
of Saint Lawrence, is also in the 
collection. 
These all agree well with Stimpson's description, being of a red- 
brown color, and have numerous fine transverse wrinkles, especially 
on the anterior part of the surface, as well as a thin external coating 
of sand. The largest are 20 mm. to 30 mm. long and 6 mm. to 8 mm. 
in greatest width. The species attains, however, a considerable size 
in some regions. Hartmeyer mentions a specimen from Iceland 110 
mm. long. 
The following notes on the anatomy were made from a small speci- 
men about 14 mm. long which was not entirely mature. 
Mantle strongly muscular, numerous stout bands extending from 
Text-flg. 29.- 
sir and Forbes 
Pelonaia corrugata Good- 
X5. 
