MARINE MOLLUSCA OF THE UNITED STATES. 69 
tentacles cylindrical, much swollen at their tips. The species are 
few in number and small, though exceedingly elegant. 
1. A. PoumTa, Verrill. Fig. 122. 
. Am. Journ. Science, 3d series, iii. 282, t. 6, £5. 1872. 
Shell white, elongated, regularly tapering, slender, acute. 
Whorls thirteen or more, convex, rounded, scarcely flattened ; 
surface smooth, polished, shining, with faint or scarcely distinct 
striz of growth. Aperture broad oval; outer lip sharp, slightly 
effuse; columella slightly curved, without a fold. 
Length 8, diam. 2 mill. 
Dredged in twenty fathoms. 
Eastport Harbor, Me. 
Genus MENESTHO, Moller. 
Index Moll. Scand. 1842. 
1. M. srrratuLa, Couthouy. Fig. 123. 
(Pyramis.) Bost. Journ. Nat. Hist., ii. 101, t. 1, f. 6. 1838. 
Menestho albula, Moller, Moll. Scand. 1842. 
Menestho striata, Chenu. Man. Conchyl., i. 229, f. 1311. 
Shell smooth, subulate, imperforate, usually polished. Whorls 
seven to nine, nearly flat, marked by twelve to fifteen minute 
recular revolving striz, diminishing in number to the apex; suture 
linear and rather deeply impressed. Aperture ovate acute, angular 
above; base very slightly effuse; outer lip sharp, smooth, without 
any sinus or groove at its junction with the body-wWhorl; pillar 
lip arched regularly throughout. Pale bluish-white, milk-white 
within. 
Length 15, diam. 5 mill. 
> New England. 
Genus EULIMA, Risso. 
Hist. Nat. Eur. Merid., iv. 128. 1826. 
The Eulime crawl with the foot greatly in advance of the head, 
which is usually concealed beneath the margin of the shell; many 
of them have distorted shells, the upper whorls being often curved 
or inclined to one side. 
1. E. oLeAceA, Kurtz and Stimpson. Fig. 124. 
Proc. Bost. Soc. Nat. Hist., iv. 115. 1851. 
Shel small, subulate, solid, very shining, white, marked with 
light-brown transverse bands; whorls twelve, flattened, closely 
coiled; suture inconspicuous; aperture small, ovate. 
Length 6.25, diam. 1.5 mill. 
