GASTEROPODA. 173 



Fig. 98 



The Auricula frequent salt-marshes, damp hollows, and places overflowed 

 by the sea ; they were long regarded as marine animals, and their shells con- 

 fused with those of Tornatella and Ringicula. 



AURICULA, Lamarck. 



Type. A. Judsc. PI. XII. fig. 35. Etym. Auricula, a little ear. 



Syn. Cassidula, Per (not Lam.) Marinula (pepita) King. Geovula, Sw. 



Shell oblong, with thick, dark epidermis ; spire obtuse ; aperture long, 

 narrow, rounded in front, with 2 or 3 strong folds on the inner lip ; outer 

 lip expanded and thickened. 



Distr. 50sp. Philippines, Celebes, Peejees, Australia, Peru. 



Fossil, 20 sp. ? Neocomian . Prance. 



Fig. 99. A. auris-felis. (From Eyd. and Soul). 



A. JudcB has truncated tentacles ; the typical species are met with in 

 the brackish-water swamps of tropical islands, on the roots of mangroves, 

 and by small streams within the influence of the tide. One species has been 

 observed by Mr. Adams in nearly 2 fathoms water. 



Sub-genera, Polydonta, Pischer, P. scarabceus, PI. XII. fig. 36. (Sca- 

 rabus imbrium, Montf.) Shell oval, compressed; spire pointed many- 

 whirled, with lateral varices ; aperture toothed on both sides. Distr. 20 sp. 

 India, Borneo, Celebes, Pacific Ids. Inhabits moist spots in woods near the 

 sea, and is wholly terrestrial, feeding on decayed vegetables. (Adams.) 



Pedipes (afra) Adans. Shell ovate, spirally striated, aperture denticu- 

 lated on both sides ; the animal loops in walking, like truncatella. Distr. 

 W. Indies, Africa, Philippines, Pacific Ids. Under stones on the sea-shore. 



Fossil, 5 sp. Eocene . Brit. Prance. 



CONOVULUS, Lamarck. 



Type, C. coniformis, Brug. PL XII. fig. 37. ( = Voluta coffea, L. ?) 



Syn. Melampus, Montf. Rhodostoma, Sw. 



Shell obtusely cone-shaped, smooth ; spire short, flat-whirled : aperture 

 long, narrow ; lip sharp, denticulated within ; columella twisted in front ; 

 wall of the aperture with 1 or 2 spiral plaits. 



