V U L U M, 



Plate X. 



Species 42. (Fig. a, Mus. Taylor ; Fig. b, Mus. Cuming.) 



OvuLUM SPELTA. Ov. testd obloiKjo-ovald^ subveniricosd, 

 curiwo-rosaced, interdum fasciatd, tenia, subpellucidd, 

 extremilatibns atteuiialo-rostralis, labro iucmssalo, 

 iiiferii.i late sinuuto et truiicato, coliimelld obscure cou- 

 torlo-plicatd. 



TuE SPELT OvuLUJi. Shell ohloug-ovate, somewhat 

 ventricose, flesh-rose, sometimes baiided, thin, some- 

 what transparent, e.i;trerailies attenuately beaked, lip 

 thickened, broadly sinuated and truncated at the 

 lower part, columella obscurely twistedly plaited. 



Bulla spelta, Linnaeus, Syst. Nat. p. 1183. 

 Opiila spella, Lamarck. 



Huh. Pacific Ocean. 



The shortest and most ventricose of the beaked species 

 collected in this Plate. 



Species it. (Fig. «, Mus. Cuming ; Fig. b, Mus. Taylor.) 



OvuLUM KOSEUM. Oo. tedd eloiigato-ovatd, la;viffatd,ni- 

 tente, aurantio-rosed, bitus vivide coloratd, extremita- 

 tibus I'ectis, attenualo-roslratis, labro iiicrassato, iii- 

 ferne sinuato. 



The ROSE Ovxjlum. Shell elongately ovate, smooth, 

 shining, orange-rose, brightly coloured within, extre- 



mities straight, attenuately beaked, lip thickened, 



sinuated towards the lower part. 

 AuAMS, MS. in Mus. Taylor. 

 Hab. China Seas ; Belcher. 



Picmarkable for its bright orange-rose colour, but 

 scarcely distinguishable in form from O. biroslre. 



Species 43. (Fig. a, b, Mus. Cuming.) 



OvuLUM Angasi. Ov. iesld laiictolulo-ovatd, subcom- 

 pressd, eburned, nitente, extremitaiibus retusis, labro 

 et columeUd crasse callosis, vifenie modice ninuatis, 

 apertiird peranynstd. 



Angas's Ovulum. Shell lanceolately ovate, rather com- 

 pressed, ivory-white, shining, extremities blunt, lip 

 and columella thickly callous, moderately sinuated at 

 the lower jiart, aperture very narrow. 



Adams, MS. in Mus. Cuming. 



Hub, Port Curtis, Australia. 



The aperture of this delicate species is much contracted 

 by the callous thickening of the lip and columella. 



Species 45. (Fig. a, b, Mus. Cuming.) 



Ovulum birostke. Oo. Iesld elongato-ovatd, riifesceiite- 

 carned, interdum fasciatd, Uevigald, nitente, extremi- 

 latibns uttenuato-rostratis, labro incrassato, ii/ferne 

 sin/ialo. 



The two-beaked Ovulum. Shell elongately ovate, 

 reddish flesh-colour, sometimes banded, smooth, 

 shining, extremities attenuately beaked, lip thickened, 

 sinuated at the lower part. 



Bulla birustris, Linnasus, Syst. Nat. p. 11S2. 

 Ooula birostris, Lamarck. 

 Radius bremrostris, Schumacher. 

 ' Hab. Japan. Eastern Seas. 



■ The lip is sometimes rudely denticulated within, but 

 this can hardly be relied upon as a character. 



Species 46. (Fig. a, b, Mus. Cuming.) 



Ovulum Piiilippinarum. Ov. testd elonyalo-oi-atd, 

 livido-carned, temii, extremitatibits attenuatis, retusis, 

 labro modice incrassato, inferne late sinuato, aperturd 

 superne anguste coarctatd. 



The Philippine Ovulum. Shell elongately ovate, livid 

 flesh-colour, thin, extremities attenuated, blunted, 

 lip moderately thickened, broadly sinuated at the 

 lower part, aperture narrondy contracted towards the 

 upper part. 



SowERBY, Pro. Zool. See. 1S48, p. 13(5. 



Hab. Isle of Capul, Philippines ; Cuming. 



A delicately-formed species, more than usually atte- 

 nuated towards the upper part, while the extremities are 

 blunted, not acuminately beaked, as in the preceding spe- 

 cies. 



June, 1865. 



