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. T25 mill. 

 (Stimps.). 



Broad Bay, Boston Harbor, 4-7 fms., sand. 



Philine sinuata STIMP., Proc. Bost. Soc. N. H. iii, p. 333 (1850) ; 

 Shells of New England p. 51, pi. 1, f. 7. GOULD-BINNEY, 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. . PL 5, figs. 17, 18 19 ; pi. 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 striae, which are com- 

 posed of minute oval dots and appear punctate ; these striae 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; the inner 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. ( Je/r.). 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). 



