Mabginella. MOLLUSCA. SOLENOSTOMATA. 3B5 



MARGINELLADiE. 



Gen. LXVIII. MARGINELLA.— Spire short ; outer lip 

 with an external border ; pillar folds equal ; no lid. 



-300. M. valuta. — Whorls two, greenish, the outer lip white. 



Cyprsea voluta, Mont. Test. Brit. 203. t. vi. f. 7 — Voluta kevis, Don. 

 Brit. Shells, t. clxv.— Inhabits deep water, rare. 

 Length about half an inch, subcorneal, strong, smooth ; aperture linear ; 

 both lips denticulated ; pillar subplicated. The Bulla diaphana of Montagu, 

 Test. Brit. 225. t. vii. f. 8. is regarded as the young of this species. 



Gen. COLOMBELLA. — Aperture oblique; outer lip with 

 an internal callus contracting the cavity ; pillar plaited ; no 

 lid. 



1. C. Bartonensis Shell oval, contracted close to the beak, strongly reti- 

 culated ; whorls about four or five, the last about two-thirds the length of 

 the shell ; aperture elongated, curved, acute at both ends ; right hand lip ex- 

 panded, undulated, toothed within ; left-hand lip smooth at the edge, toothed 



within Murex Bart. Sower. Min. Conch, t. xxxiv. lower figures. — London 



Clay. 



2. C. ventricosa. — Subovate, inflated, transversely striated ; spire short, 



pointed, base notched ; three sharp plaits upon the pillar ; body-lip callous r 



Auricula vent. Sower. Min. Conch. 4(J5. f. 1 — In the Crag at Ipswich. 



3. C. buctinea.— Subovate inflated, smooth ; spire short, acute ; base notch- 

 ed ; three sharp plaits upon the pillar ; left lip callous ; right Up with a thick 



border Auricula buc Sower. Min. Conch, t. cccclxv. f. 2 — In the Crag at 



Ramsholt. 



OLIVADJE. 



Gen. OLIVA. — Shell subcylindrical ; aperture longitudinal, 

 emarginate ; separating line canaliculated, by the inflection 

 of the edge of the last whorl. 



1. O. Branderi.— Ovate, pointed, smooth ; spire prominent, last whorl con= 

 vex ; mouth oblong ; right lip thickened. — (Voluta Ispidula, Brander, Foss. 

 f. 72.) Sower. Min. Conch, t. eclxxxviii. upper figure — London Clay. 



2. O. Salisburiana. — Subfusiform, short, ventricose, smooth ; mouth oblong, 

 both lips tumid above.— Sewer. Min. Conch, t. eclxxxviii. lower figures — 



London Clay. 



