14 OLEACINID^, 



Strebelia, Crosse and Fischer, 1868. 



Syn.— Physella, Pfeiffer, 1861 (not Hald., 1842). Spirobulla, 

 Ancey, 1881. 



Dist7\ — 1 sp. Mexico, S. Berendti^ Pfeiffer (xcii,50). 



Shell bulliform, spire very short, the last whorl elongated, 

 comprising nearly the entire length of the shell ; columella 

 simple, arcuated, not truncate ; peristome simple, acute. Animal 

 much larger than the shell. 



Oleacina, Bolten, 1198. 



;S?/^._Cochlicopa, Per., 1819. Pfaffia, Behn., 1844. 



Dis^r._142 sp. U. S. (Gulf States), West Indies, Mexico, 

 Central American, Northern South America, So. Europe (one 

 species), Algiers. Possil. Cret. — ; Europe. 



Shell oval-oblong, with a thin, smooth olivaceous epidermis ; 

 last whorl large, sometimes attenuated at the base ; aperture 

 elliptical-oblong, equaling or exceeding half the length of the 

 shell ; outer lip simple, sharp, usually somewhat inflected in the 

 middle. 



VARICELLA, Pfeiffer, 1855. Shell with longitudinal varices. 

 0. leucozonias, Walch. 



MELiA, Albers, 1850. Shell fusiformly turreted, longitudinallj- 

 subcostate ; whorls rather flattened ; columella twisted, obliquely 

 truncate ; aperture narrow, semioval ; lip sinaple, submarginate 

 within. 0. simplex^ Strebel. 



BOLTENiA, Pfeiffer, 1818. Typical group of Oleacina. 0. 

 oleacea, Per. (xcii, 51). Cuba. 



poiRETiA,.Pischer, 1883. Animal with feeblj^ developed labial 

 palpi. Formed for 0. Algira, Brng., the only European species. 



GLANDiNA, Schum., 1817. (Polyphemus, Mont., 1810. Euglan- 

 dina, Crosse and Fischer, 1870.) Shell oblong-oval, fusiform, 

 corneous, covered b}^ a thin, fugacious epidermis ; spire more 

 or less elevated, of six or eight whorls ; columella thin, arcuated, 

 truncated at base ; aperture rather narrow, longitudinal ; lip 

 sharp, simple. 



Animal much longer than the shell, when extended ; oculiferous 

 tentacles deflected at the tips, beyond the eyes ; inferior tentacles 

 much shorter, also deflected ; lips elongated, tentacular (vi, 72). 

 0. Garminensis, Morelet (xcii, 52). 0. trunoata, Gmel. (xcii, 53). 

 Florida. These animals are predaceous in their habits, and carniv- 

 orous ; they attack with avidity Bulimi as large as themselves, 

 and devour them. When they have chosen a victim they probe 

 the aperture with their palps before penetrating it ; the buccal 

 mass is then protruded, and the contents consumed through the 

 aperture they make. The species inhabit tropical America — 

 mainly Mexico and Central America, although a few species occur 

 in the southern United States. The shells are of larger size 



