llecent Species of Ovidum. 155 



depressed, and straightened : aperture narrow at the upper extremity, 

 wider and somewhat angular at the lower. In general form this species 

 is more lengthened than O. carneum, and it is less gibbous; it has, 

 however, a slight angular gibbosity rather above the middle of the back. 

 My specimens accord perfectly with Lamarck's description; he states 

 that it is found on the coast of Africa ; my specimens, according to the 

 late G. Humphrey, are from Japan. 



O. hordeaceum. Lam., does not appear to me to differ from O. triti- 

 ceum; my opinion is, however, formed only from the comparison of his 

 descriptions, for I have never seen the shell described by him under the 

 former name; and I shall be most thankful to any friend who will com- 

 municate to me an authentic specimen of it. 



OVULUM STRIATULUM. 



O. testd oblongd, dorso transversim striata et gibboso, albicante; labio 

 externa planulata, intits denticulata ; labia columcUari superne calloso, 

 infrd depresso ; extremitatibus subacuminatis, obtusiusculis, long. y\, 

 lat. yV, poll. 

 Hab. ad littora Oceani Indici. Mus. nost. 



Desc. Shell oblong, back transversely striated and gibbous, whitish; 

 outer lip flattened on the edge, denticulated on the inside ; columellar lip 

 callous at the upper end, depressed at the lower ; extremities rather 

 acuminated, but obtuse. 



A very small East Indian species, much resembling 0. Frumentum m 

 general shape and characters, and differing from it only in colour and in 

 being transversely striated. From the East Indies, according to Mr. G. 

 Humphrey. 



OvuLUM Frumentum. 

 0. testd oblongd, dorso transversim gibboso ; rubescente, transversim al- 

 bido-unifasciatd ; labio externo margine planulata, intus denticulato ; 

 labia colamellari superne calloso, infrd depresso ; extremitatibus sub- 

 acuminatis, obtusiusculis ; long. -^^^, lat. ■^■^, poll. 

 Hab. Mus. nost. 



Desc. Sliell oblong, back transversely gibbous ; colour approaching 



l2 



