MOLLUSCA. 813 
Sp. Physa fontinalis Drav., Bulla fontinalis L., Sturm Deutschl. Fauna, 
vi. Heft 4, Tab. 10;—Physa hypnorum Drap., Bulla hypnorum L., StuRM 
1. 1. Tab. 11, Cuv. R. Ani., éd. ill., Moll. Pl. 26, fig. 5. 
Planorbis Bruc. Tentacles setaceous, very long. Foot short. 
Shell disciform, with all the wreaths conspicuous on both sides. 
Aperture almost lunate, with margin not reflected. 
These snails live with Zimneus in stagnant fresh water, and have, how- 
ever remarkably the external form differs, almost the same internal structure 
as the species of that genus. Compare SwAMMERDAM Bibel der Nat. i. bl. 
186—189, Cuvier Ann. du Mus. vu. pp. 194—196, Pl. x. figs. 12—15, 
Mollusq., Mém. 14. 
Sp. Planorbis corneus, Helix cornea L., Buatny. Malacol. Pl. 37 bis, fig. 3, 
Srurm 1. 1. Tab. 4, Guirtn Zconogr., Moll. Pl. 7, fig. 2, &e. 
Auricula LAM. (spec. from genus Voluta L.). Two conical 
tentacles. Shell oval or oblongo-ovate. Aperture longitudinal, 
with labrum often reflected. Columella folded. 
To this genus belong species that live on land, although elsewhere these 
molluses, like Helix, are distinguished by four tentacles. Different genera 
have been adopted here, as Carychium Murtn. and Scarabus Montr., 
Scarabea Cov. This last genus is distinguished by a shell longitudinally 
compressed into a margin on each side (carinated), 
Compare DESHAYES Dict. wnivers. d’Hist. nat. 1. 1842, pp. 345—348, 
the article Auricule; TROSCHEL in WIEGMANN’S Archiv, 1838, I. pp. 202— 
208, on Scarabus, and REEVE on the same sub-genus, Ann. of Nat. Hist. 
IX. pp. 218—221. 
Sp. Auricula mide, Voluta Auris Mide L., D’ArcENnv. Conchyl. Pl. 10, 
fig. G, Encyel. méth., Vers. Pl. 460, fig. 6, GuéRiIN Iconogr., Mollusq. Pl. 
7, fig.7, Quoy et Gaim. Astrolabe, Zool. Pl. 14 (fig. with the animal, trans- 
ferred in Cuvier R. Ani., éd. ill., Moll. Pl. 27, fig. i); New Guinea, not 
far from the shore; Auriculajude, Voluta Auris Jude L., Buatny. Malacol. 
Pl. 38, fig. 1;—Auricula scarabea, Helix Scarabeus L., Scarabus imbrium 
Montr., Cuumn. Tab. 136, figs. 1249, 1250, REEVE Ann. of Nat. Hist. 1.1. 
Pl. 4, fig. 11; lives in the E, Indies, in woods at the roots of trees, &c. 
Phalanx Il. Eyes at the point of tentacles. Tentacles most 
frequently four; two superior placed more backwards, larger; in- 
ferior short (sometimes obsolete). Mollusca pneumonica terrestria 
aut amphibia. 
A. Testacea (Helicina). 
Pupa Drav., Lam. (spec. of Turbo L.). Animal with inferior 
tentacles very short or none (Vertigo MurLL.). Shell elliptical or 
cylindrical, with aperture semirotund, in most dentate. 
