PHILINE. 19 
Compare P. sinuata Stimp. The keeled vertex, exposed spire and 
lack of spiral striation are its more prominent features. 
P. sInuATA Stimpson. Frontispiece, fig. 23. 
Shell minute, ovate, white, pellucid, longitudinally striated ; spire 
conspicuous; aperture dilated in front. Alt. 1°75, diam. 1:25 mill. 
(Stimps.). 
Broad Bay, Boston Harbor, 4-7 fms., sand. 
Philine sinuata Strmp., Proc. Bost. Soc. N. H. iii, p. 333 (1850) ; 
Shells of New England p. 51, pl. 1, f. 7—GounLp-Biyney, Invert. 
Mass. p. 213, fig. 502. 
Evidently allied to P. nitida Jeffreys, but the crown is not acutely 
keeled as in that form, and is narrower. 
P. quADRATA S. Wood. PI. 5, figs. 17, 18 19; pl.3, fig. 43. 
Shell squarish-oval, convex, contracted or compressed on the 
upper part below the spire, and bluntly angulated in the middle; it 
is not very thin, is semitransparent, and when fresh of a glistening 
luster; sculpture, numerous rows of fine spiral strise, which are com- 
posed of minute oval dots and appear punctate ; these strix are irreg- 
ularly disposed, being in some parts more close together than in 
others, and they here and there form intermediate and slight lines; 
the upper part of the body-whorl is thickened and rounded, and the 
middle is furnished with a blunt and slight spiral rib, which is usu- 
ally visible also within the mouth; the top of the outer lip is deli- 
cately scalloped; color white, crystalline when extracted from the 
animal ; spire small, more or less sunken ; apex obscure ; whorls 2— 
3 rounded ; theinner ones are minute; suture deep; mouth broadly 
oval, contracted above by the periphery, and expanded below, with 
the base obliquely curved and somewhat truncated; it occupies 
about two-thirds of the underside of the shell; outer lip nearly 
straight in front and forming an obtuse angle at the junction of that 
part with the base ; the top is rather higher than the spire, and pro- 
jects outwards; outer corner bluntly angular or rounded; inner 
corner receding and acute-angled, but not exhibiting any further 
disjunction of the outer whorl from the next; inner lip broad and 
thick. (Jeffr.). Alt. 7-8 mill. 
Northern British Seas ; Scandinavia; Greenland ; off New Eng- 
land; Bay of Biscay (Jeffr.) ; off Fayal, 50-90 fms., and St. Miguel, 
Azores, 100 fms. (Chall.); St. Helena, 50-80 fms. (Capt. Turton). 
