from the Gulf of California, etc. 315 
them have already been given in the Proceedings of the Soci- 
ety for November, 1851; they are here amplified and mostly 
accompanied with figures. 
BULIMUS VESICALIS (Pl. XIV. Fig.1.) 
Testa tenuis, lactea, ovoidea, striatula, vix perforata; spira brevis, anfracti- 
bus 53, ultimo elliptico quadrantes tres longitudinis testa adequante: apertura 
dimidiam long. adequans, lunata ; labro simplici; columella reflexa. 
Shell ovoid, thin, milk white, delicately and regularly striate ; 
spire short, whorls 51, inflated, the last one more than three fourths 
the length of the shell, nearly symmetrical in form at both extre- 
mities ; aperture somewhat more than half the length of the shell, 
narrow lunate ; lip simple ; columella broadly reflected over a nar- 
Tow umbilical fissure ; a thin glazing of callus on left lip. 
Length an inch and a fourth ; breadth seven tenths of an inch. 
Inhabits Lower California. Maj. Rich. 
Form and size of B. apodemetes, D’Orb., which has variegated 
colors, a broader base and larger aperture. It is somewhat like 
B. coturnix, and more especially like B. oblatus Gould. 
BULIMUS VEGETUS (Pl XIV. Fig.2.) 
T. solidula, .elongato-ovata, alba, striatula, perforata; spira elevata, anfract. 
Sex, (suturà impressá) ultimo dimidiam longitudinis testm superante, tamido, 
Subgibboso; apertura subovata; labio subcontinuo, reflexo, faucibus stramineis. 
Shell rather solid, elongate ovate, white, faintly striate; spire 
acuminate ; whorls six, convex, suture well impressed, last whorl 
three fourths the length of the shell, tamid and somewhat gibbous 
9n the back ; aperture placed somewhat laterally, half the length of 
the shell, suboval, its plane nearly that of the axis, extremities of 
the lip approximate ; lip moderately reflexed at base, still less so 
laterally, rising broadly at the columella, and standing off from the 
dy whorl ; umbilical opening large and deep, subcircular ; fauces 
cream colored. 
ngth an inch and a half; breadth nearly one inch. 
Inhabits San Juan, Gulf of California. Lieut. Green. - 
Belongs to the group with B. sordidus. Its form is like that of 
