In younger individuals the subcorneal apex, together with the spire, is exposed, and the upper edge of the border 

 of the body-whorl, which is sharper than it is in old specimens, does not project beyond them ; neither does the 

 enamel-like glaze, which in this stage of growth is thin and silvery, cover more than two-thirds of the shell. 



CYMBA OLLA. Fig. 1, a, b, c, d. 



C. testd ovatd, ventricosd, pallide luteo-fulvd ; spird brevi, caualiculatd, apice subconico, exserto ; columelld 2-plicatd. 



Syn. Voluta 011a, Linn, et Auct. 



Icon, tests adultae, fig. 1, b, d. Swainson, Exot. Conch. (Voluta Olla.) Gualt. test. t. 29, fig. A, Favanne, Conch, t. 28, fig. 

 c, 1. Knorr, Delic. 6, t. 22, fig. 2. Martini, Conch. Cab. 3. t. 71, fig. 766. Encydop. t. 385, fig. 2. List. Conch, t. 794, fig. 1. 

 Wood, Ind. test. t. 21, fig. 180. 



Icon, varietatis fascia pallidiore,* fig. 1, c. 



Icon, pulli. fig. 1, a. 



Hab. in Mari Mediterraneo (Gibraltar.) 



Desc. Shell ovate, venfricose, pale fulvous, covered with a thin pale brown epidermis, which is coated with an enamel- 

 like glaze from near the pillar to about two-thirds of the shell. The subconical apex is exposed as well as the spire, which last, 

 together with the upper part of the body-whorl, is rounded and deeply channelled. Pillar with two plaits. 



* Favanne (Append, pi. 2, fig-. II.) g'ives a lepresentation of a variety marbled with white: I have nejer seen this variety. Lamarck's 

 " var. lahio dilatatissimo, extus sulco transversali distineto," for which he quotes Lister, t. 794, f. 1, is probably only accidental, in conse- 

 quence of some derangement in the collar of the animal. 



CYMBA GRACILIS. Fig. 8, a, b, c, d. 



C. testd subcylindricd, albo rufoque ncbulosd ; spird sub-excavatd, apice subglandiformi conspicuo ; labii limbo spirain versus 

 inftexo ; columelld 4-plicald. 



Icon. fig. 8, a, b, c, d.f Martini, Conch. Cab. 3. t. 71. f. 762. 



Habitat ? 



Desc. Shell subcylindrical, clouded with white and reddish. The spire somewhat excavated, and the subglandiform apex 

 conspicuous. The area much less, and the channelling much shallower than in C. Cymbium : the pillar, which has four plaits, 

 much straighter, the aperture narrower, and the whole shell more slender and symmetrical. The sharp upper border of the lip 

 is very much inflected towards the spire, and the shell is covered with a thin brown epidermis, which is coated with the enamel- 

 like glaze for about one-third of the shell, beginning near the pillar. There is reason for concluding that in very old specimens 

 this coating extends much further. 



-f- The shell figured 8, c, d, is possibly a variety, but its bad condition does not permit a decisive opinion. 



CYM BA CYMBIUM. Fig. 9, a, b, c, d. 



C. testd subovatd, albo rufoqve marmoratd; spird canaliculald, earmold, apice subglandiformi, conspicuo ; columelld o-plicatd. 



Syn. Voluta Cymbium, Linn, et Auct. 



Icon, teste adultae, fig. 9, c, d. Sowerbij, Genera, (Cymba, fig. 2, Cymba Cymbium.) List. Conch, t. 796, fig. 3. Gualt. test. 

 t. 29, fig. B. Adans. Seneg. t.3, fig. 1 ? Seba, Mvs. 3, t. 65, fig. 8, 9. Martini, Conch. Cab. 3, t. 70, fig. 763, Encyclop. t. 3S6, 

 fig. 3, a, b. Wood, Ind. Test. t. 21, fig. 1 78. 



Icon, testae j unions epidermide obteclee, fig. 9, b. 



Icon, pulli, fig. 9, a. 



Habitat in Oceano Africano. 



Desc. Shell irregularly ovate, marbled with white and brownish red, covered with a thin brown epidermis, which is coated 

 for about one-third of the shell with the enamel-like glaze, which takes its commencement near the pillar. The spire is deeply 

 channelled and carinated, exposing the subglandiform apex, and forming with the subreflected sharp upper border of the body- 

 whorl, a wide spiral excavation. The upper edge of the outer lip recedes from the spire. The pillar, which is very much curved, 

 has three plaits, and is bordered on the basal half with a rich chesnut longitudinal band. 



