GLANDINA. 13 



A. Head, cije-pcJunclcs, and tentacles retractile under the slan. 



Sect. I. Vermivoka. Buccal mass very large, elongate, projectile like a 

 proboscis. Jaw none ; teeth numerous, slender, conical, distant. 

 Mantle well defined. Usually subterraneous ; carnivorous, or worm- 

 eating. 



Family OLEACINID^. 



Lingual membrane long, narrow; teeth uniform, pointed, 

 distant, arranged en chevron, recurved, apex directed back- 

 wards. 



Jaw wanting. 



Body very long, attenuated, spiral, protected by a well- 

 developed shell. Head with a retractile, projectile buccal 

 sack. Eyes near the ends of long, cylindrical, retractile 

 peduncles; tentacles moderate, retractile; labial processes 

 developed into curved, flat, triangular feelers. Mantle thin, 

 covered with a shell, capable of containing the whole animal ; 

 respiratory orifice on the right side, beneath the margin of 

 the shell. Foot elongate, narrow, without any distinct loco- 

 motive disk, simple posteriorly. Vent near the respiratory 

 orifice. Orifice of reproductive organs someways behind 

 the right eye-peduncle. 



Shell spiral, oblong, flesh-colored, outer lip thm, acute; 

 aperture long and narrow. 



GI.A1VDIIVA, ScHUM. 



Shell oblong, fusiform, horn-colored, whirls 6-8, the last 

 attenuated at base. Aperture narrow, elliptically-oblong ; peris- 

 tome simple ; columella twisted forward at the base and trun- 

 cated. Suture often crenulated or 

 margined. Uniform in color or 

 ornamented with longitudinal, usu- 

 ally brownish streaks. 



There is no horny jaw. '^^^^^^^^^^^^M' 



Lingual membrane narrow, with ''("^^MM^^^ri^S^S^-^S^^ 



chevron-shaped rows of uniform, Lingual membrane ol <?. «ru7i«itct. 



