40 SHELLS OF NEW ENGLAND. 
joining each other at their bases, where, on the exter- 
nal sides, are the eyes, which may be seen through 
the shell, when, as is usually the case, the head does 
not project beyond it. Foot short, broad, slightly 
produced at the anterior angles; the lobe above pro- 
jecting a little beyond it. 
This is a very variable species, especially as re- 
gards the form and length of the aperture. Conrad 
has described two species from the miocene of Vir- 
ginia which closely resemble this. It was dredged 
in Buzzard’s Bay, several miles from land, at the 
depth of eight fathoms, where the bottom is com- 
posed of a soft gray mud. 
PYRAMIDELLIDA. 
MenestHo auputa, Moll. Turbo albulus, O. Fabr. 
Pyramis striatula, Couth. Gould, 269, f. 174. — Co- 
rall. West Isles near Eastport, Me., in 10 f. gravel, 
(W. 5.) Isles of Shoals, in 20 f. sand, (Wh.) Off 
Baker’s I., in 20 f. gravel, (Wh. and W. 8.) Off 
Cape Cod, in 30 f. shelly bottom, (Atw.) 
CHEMNITZIA NIVEA, St. Bost. Proc., Oct. 1851. T. aci- 
eulata, subcylindrica, alba, nitida; anfr. 11, planati, 
longitudinaliter plicati, plicis rectis, interstitiis le- 
vissimis. Long. .28, lat. .04, poll. 
Animal white; head short; tentacles triangular, 
very broad, with the eyes at nearly the middle of 
their bases; foot elongated, with an arcuated inden- 
tation at its anterior terminus. 
