OVULUM OBTUSUM. Fig. 34. 

 O. testd ovatd, utrinque subacuminatd, obtusd, Icevi, albicante ; aperlard prope basin subeffusd ; labium marginibus Icevibus ; 

 long. fV> l°t- «V» poll. 



Hab. . Mus. nost. 



Desc. Shell ovate, slightly acuminated towards both extremities, but obtuse ; smooth all over, whitish ; upper end of the 

 aperture narrow, linear ; lower end wider and rather effuse ; edges of both lips quite smooth ; middle of the outer lip thicker than 

 the two extremities. 



Several specimens of this very small species were among Mr. G Humphrey's stores, but without any information concerning 

 its locality. It is certainly nearly related to 0. Spelta, but I think sufficiently distinct to be easily recognised. 



OVULUM SEMINULUM. Fig. 40. 



O. testd oblongd, medio ventricosiusculd, carneo-rubescente ; extremitatibus obtusis ; labii externi margine rotundato, edentulo : 

 labio columellari depresso : long. .5%, lat. ^, poll. 



Hab. in Insulis Maris Pacifici. G. Humphrey. 



Desc. Shell oblong, slightly ventricose in the middle, flesh-red ; extremities obtuse ; margin of the outer lip rounded, 

 without teeth; columellar lip depressed, its inner edge sharp-angled. 



One of the smallest species I have seen : a single specimen was preserved in Mr. G. Humphrey's collection labelled " Semi- 

 Cowry, Friendly Islands." 



OVULUM FORMICARIUM. Fig. 3.9. 



0. testd oblongd, dorso supra medium transversim subcarinato, albo ; labio externo edentulo, margine subdepresso ; long. 7 %, 

 lat. iV» P°tt- 



Hab. in Oceano Indico. G. Humphrey. Mus. nost. 



Desc. Shell white, oblong ; back slightly carinated rather above the middle, outer lip without teeth, its margin rather 

 flattened. 



The smallest species I have seen. From its resemblance to an ant's egg I have named it 0. formkarium. 



OVULUM SECALE. Fig. 30. 



O. testd oblongd, angustd, albicante, superne obtuse mucronatd; columelld superne uniplicatd, subtus depresso-sulcatd ; 

 labii externi margine rectiusculo, prope basin subangulato ; long. T \, lat. ^, poll. 



Desc. Shell oblong, narrow, whitish ; upper end of the lip obtusely mucronated ; columella with a single fold at the 

 upper end; lower part, commencing near the middle, depressed, with a slight groove; margin of the outer lip thickened, nearly 

 straight, somewhat angular near the lower part. 



The only specimens of this species I have seen were in Mr. G. Humphrey's collection, I am unacquainted with their locality. 



OVULUM SPELTA. Fig. 43. 



0. testd oblongd, medio subventricosd, utrinque acuminata ; aperturd superne lineari, subtus subeffusd ; labio externo subtus 

 rotundato-angulato ; columella superne oblique uniplicatd; long. y-y, lat. T %, poll. 



Ovula Spelta, Lam., Anim, sans vert. VII., 370. Bulla Spelta, nonnull. 



Hab. ad littora Insularum Oceani Pacifici. G. Humphrey. Mus. nost., &c. 



Desc. Shell oblong, slightly ventricose, pointed at both extremities, ratner more at the upper than at the lower ; aperture 

 linear and narrow at the upper, and rather effuse at the lower extremity ; lower end of the outer lip rather angular, angle rounded, 

 columella with an oblique plait at the upper end. 



There is no doubt of the shell here given being the Ovula Spelta of Lamarck, and I believe also the Bulla Spelta, Linn. 



It is related to 0. birostre, and comes between that species and my O. obtusum. Lamarck states it to be a Mediterranean species ; 

 my specimens are from the South Seas and Friendly Islands, according to two tickets in the hand writing of Mr. G. Humphrey. 



Martini's (torn. I. f. 215.) and Gualtieri's (t. 15, f. 4.) figures are not sufficiently good to be referred to as certainly belonging 

 to this species. 



