214 



GLYPHI8. 



ately ribbed, ribs rather distant, muricated ; dorsal aperture small, 

 elliptical, its internal edge broad. Length Tl, breadth O8 inches. 



(Sowb.*) 



St. Vincent. 



F. subrostrata GRAY in Sows., Conchol. Illustr. p. 6, f. 35. / F. 

 subrostrata " Guild.," Sows. 2o, Thes., p. 192. 

 The original description and figure are given. 



G. ASPERA Eschscholtz. PI. 36, figs. 28, 29, 30. 



Shell ovate, narrower in front, conical, the slopes nearly straight 

 or a little convex behind the middle. Sculptured with numerous 

 radiating riblets, of which 30-34 are larger, the intervals between 

 them bearing about three smaller ones ; the whole decussated by 

 close elevated concentric lirae, which are more or less scale-like and 

 imbricating. 



Color soiled whitish, with numerous wide blackish rays. Inside 

 white, hole-callus white, very abruptly truncated behind ; margin 

 deeply and sharply crenulated. Perforation short-oval, nearly cir- 

 cular, in front of the middle. Length 56, width 40, alt. 18 mill. 



Sitka to Monterey Bay, Cal. 



Fissurella aspera ESCHSCHOLTZ, Zool. Atlas, pt. 5 (edit. Rathke), 

 1833, p. 21, t. 23, f. 5. Glyphis aspera of American authors. F. 

 lincolni (Gray) in Sows., Conchol. Illustr. p. 7, f. 14. REEVE, 

 Conch. Icon, f- 62. So WE., Thes., p. 198, f. 133. ,F. cratitia GOULD, 

 Proc. Bost. Soc. N. H, ii, p. 155, 1846; U. S. Expl. Exped. Sh. p. 

 367, f. 471. F. aspera SOWB., P. Z. S. 1834, p. 127 ; Conch. Illustr. 

 f. 46. REEVE, Conch. Icon. f. 30. SOWB. 2D, Thes., p. 198, f. 125. 



This is the largest of the West Coast species, in fact the largest 

 of the genus, although occasional specimens of G. italica attain 

 almost the same size. G. italica has a much larger key-hole-shaped 

 perforation. The original figures of Gould's F. cratitia are given 

 on pi. 42, figs. 60, 61. It is a broken, worn specimen. 



A more doubtful synonym is F. ASPERA Sowerby. The figure of 

 it is given on pi. 30, fig. 6. The original description is as follows : 

 " Shell oval, rather high, sharply sculptured, longer behind ; ashen 

 inside, the margin white, crenulated; outside with numerous radi- 

 ating riblets, muricately decussated ; dorsal aperture circular, situ- 

 ated in front of the elevated vertex. Habitat, Pacosmayo, Peru." 

 If this prove a good species the name must be changed. 



