OLEACINID^E. 1 9 



FAMILY OLEAGINID^. 



Animal with short head, with a retractile, often produced 

 buccal sac ; eyes at the tips of long, cylindrical, retractile 

 peduncles; inferior tentacles moderate; foot elongate, narrow, 

 simple posteriorly. Lingual teeth numerous, the transverse 

 rows more or less curved ; central teeth inconspicuous, marginals 

 aculeate, or with a single long recurved apex. 



Shell spiral, fusiform, corneous, more or less transparent, 

 rarely longitudinally banded ; aperture longitudinal, narrow ; 

 columella twisted or truncated anteriorly. 



Living in humid situations ; carnivorous. For the habits of 

 the Oleacinidse, see " Structural and S3'stematic Concholog3 T ," 



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in, ]4. 



Synopsis of Genera. 



Genus STREBELIA, Crosse and Fischer, 1868. 



Shell bulliform, with very short spire, the last whorl nearly 

 the total length of the shell ; columella simple, arcuate, not 

 truncate, peristome simple, acute. 



Animal much larger than the shell. 1 Mexican species. 

 (Physella, Pfr., 1861, not Hald., 1842, and Spirobulla, Ancey, 

 1881, are syno^^ms.) 



Genus OLEACINA. Bolten, 1798. 



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

 last whorl large, sometimes attenuated at the base ; aperture 

 elliptical-oblong, half or more than half the length of the shell ; 

 columella twisted or truncate below, outer lip simple, frequently 

 somewhat inflected in the middle. 150 species, mostly American 

 and subtropical. Fossil. Cret. ; Europe. 



(Polyphemus, Montf., 1810; Glandina, Schum., 1817; Cochli- 

 copa, Fer., 1819; Pfaffia, Behn., 1844.) 



Section BOLTENIA, Pfr., 1878. ( Typical group.) 



Section VARICELLA, Pfr., 1855. Shell longitudinally plicate 

 or striate, occasionally varicosely thickened, with a few longi- 

 tudinal colored strigations ; columella obliquely truncate, outer 

 lip slightly compressed in the middle. Mexico, Central America, 

 West Indies. 



Section MELTA, Albers, 1850. (Turritee, Pfr., 1878.) Shell 

 fusiformly turreted, longitudinally subcostate ; whorls rather 



