a} 
p - 
145 
73. NASSA MICROSTOMA. 
Shell oblong-ovate, rather solid, white, sparingly stained with ferru- 
ginous brown ; spire rather long, acute ; whorls six or seven, strongly 
convex, ribbed longitudinally, ribs stout, close set, rounded and 
crossed with numerous close spiral ridges ; aperture small, rounded, 
lyrated within; outer lip thick; columella arched, transversely 
wrinkled above, one or two faint spiral plicee near the base. 
74. DriLLiA NODIFERA. 
Shell elongate-ovate, smooth, plicately noduled longitudinally ; 
outer lip thin, acute; canal short; nodules white, interstices red- 
dish brown, base white. 
Vv 75. OLIvA SANDWICENSIS. 
Shell oblong-ovate ; spire somewhat acuminated ; columella-plaits 
few in number, extending two-thirds of the length of the aperture ; 
outer lip slightly thickened internally. Colour minutely freckled 
and blotched with white, reddish brown and cinereous, the lower 
half of the body-whorl being much the darkest ; apex white, en- 
circled beneath the suture with a light fawn-coloured or whitish 
band, blotched with dark reddish brown or cinereous ; aperture white, 
two broad, equidistant dark brown bands on the interior, reaching 
to the thickened portion of the outer lip. 
76. BLAUNERIA GRACILIS. 
/2> Shell elongate fusiform, thin, corneous, fragile, semipellucid. 
Whorls seven or eight, flatly convex, finely longitudinally obliquely 
striated ; suture faintly impressed, outer lip thin; columella-lip 
flexuous ; one oblique plait near the centre, truncated; aperture 
oblong-ovate, contracted posteriorly. 
Animal.—Small, subpellucid, uncoloured, excepting a yellow tinge 
around the mouth. Tentacles short, stout, approximating at their 
bases. Eyes conspicuous, black, immersed at the posterior bases of 
the tentacles. Head deep, narrow above, and much dilated below. 
Mouth a simple longitudinal slit. Foot small, short, bluntly rounded 
behind, truncated in front, divided by a transverse groove ; posterior 
portion slightly the longest. . 
77. TuURRICULA BELLA. 
Shell fusiform; spire acuminated; whorls convexly angulated ; 
sutures rather deep, longitudinally ribbed, ribs somewhat angular, 
irregular in size and finely striated longitudinally, also the interstices, 
and crossed by numerous transverse striz ; base slightly recurved ; 
columella four-plaited, a callosity posteriorly ; aperture lyrated within. 
Colour light chestnut brown, with broad lighter or whitish bands, 
and spotted remotely and irregularly with reddish brown; base 
white. 
No. 426.—PRocrEEDINGS OF THE ZOOLOGICAL SOCIETY. 
