306 



SHELLS AND SHELL-FISH. PART 11. 



tubercles, sometimes cancellated; aperture striated 

 within, rather effuse, longer than the spire, which is 

 acute ; inner lip large, vitreous, spreading ; the base 

 finely striated ; outer lip with a slight sinus at the 

 base, as in Rhinodomus; no internal groove; the 

 suture sometimes channeled and polished. 

 C. Owenii. Griff. Cuv. p. 41. f. 2. 



STRUTHIOLARIA Lam. Spire turreted ; outer lip con- 

 siderably sinuated ; inner lip thick, spreading ; the 

 pillar turned inwards ; the basal notch nearly obso- 

 lete, 

 nodulosa. En. M. 431. f. 1, crenulata. Astrol. pi. Sl.f.8,9. 



EBURNA Lam. Smooth ; sutures gene- j^ ' 3 

 rally grooved j spire and aperture about 

 equal ; inner lip very thick, partly con- 

 cealing the umbilicus, and with an up- 

 per internal groove ; outer lip thin, 

 slightly sinuated ; basal notch oblique, 

 small, (fig. 73.) 



E.spirata. En.Meth.401.f.2. pacifica. En. Meth. 401. f.4. 



PSEUDOLIVA Sto. Shell thick, oval, oliviform, ventricose ; 

 spire very short, acute ; base with two parallel 

 grooves, one of which forms a notch at the base of 

 the outer lip ; suture slightly channeled ; inner lip 

 very thick, and turning inwards ; aperture with an 

 internal canal. Connects the TURBINELLIDJE with 

 the VOLUTID.E. 

 P. plumbea. Chem. 188. f. 1806, 1807. (fig. 3. p. 82.) 



LATIAXIS Sw. Shell sub-pyriform, turbinate, and 

 the whorls detached, as if distorted ; but the spire 

 flattened at the summit ; whorls angulated, arid cari- 

 nated, with a fimbriated undulate ridge ; pillar none ; 

 umbilicus excessively large and deep.; aperture an- 

 gular ; the basal notch nearly obsolete.* 

 P. Ma was. Griff. Cuv. pi. 25. f. 4. 



* This singular shell I regard as the representation of Scalaria, Verme- 

 tus, &c. in the present; group, and as opening a passage to the Pyrulitue by 



