PULMONATA. 



11. AMPHiBOLiDiE. Shell spiral. Mouth oblong. Operculum 

 spiral, horny. Teeth like Helicida (fig. 5). Lingual mem- 

 brane very broad. 



Fig. 5. — Teeth of Amphibola. 





I. GEOPHILA. Eyes at the apex of an elongated cylindrical 

 peduncle. Tentacles cylindrical, shorter and lower down 

 than the eye-peduncles, sometimes very small or wanting. 

 Operculum none, except Cryptella? Terrestrial. 



Geophila (Les Geophiles), Ferussac, Tab. Syst. 3. 18, 1821. 



Hartmann in Sturm Fauna, 33, 1821. 



Gray, Mrs. Gray's Moll. iv. 111. 

 Geocochhdes, Latr. Fam. Nat. 1825. 

 Geophilae, Menke, Syn. 7, 1828. 

 Terricola, Fleming, Brit. Anim. 225, 1828. 

 Geochares, De Crist, et Jans. Cat. i. 1832. 

 Terrestrial Inoperculata, Gray, Turt on' s Manual, 101, 103, 1840. 



A. Head, eye-pednncles and tentacles retractile under the skin. 



a. Mantle covering the head. Tentacles in the front of the 



mantle. 



Fam. 1. JANELLIDiE. 



Tentacles two, retractile, placed on the front edge of the 

 mantle over the head. Body attached the whole length to the 

 back of the foot, rather swollen on the hinder part of the middle 

 of the back. Mantle thin, covering the whole of the back, and 

 separated from the foot by a broad lateral groove, with three 

 converging grooves in front above, the lateral one to the hinder 

 side of the tentacles and forked beneath, the central medial, and 

 extending along the centre of the back, giving off branches on 

 each side, to the edge of the mantle. Aperture of respiration cir- 

 cular, small, on the front of the back on the right side of the central 

 groove. Aperture of reproduction on the edge of the mantle on 

 the right side, under the aperture of respiration. Foot narrow, 

 in three bands, crenated on the edge. 



Shell none. 



