CONCHOLOGY. 107 
“strong resemblance. Inhabits the sides of ditches and lakes, both 
in Europe and America. Seven species. 
Succinea cuculata. Succinea oblonga. 
S. amphibia. S. patula. 
S. rubescens. S. pellucida, 
S. aperta.* 
10. Genus Auricula. Pl. X. 
Animal. See Helix. 
Shell. Solid, thick, and smooth, oval, oblong spire very 
obtuse, aperture entire, enlarged, ear-shaped, much contracted 
behind ; edges not united, right lip thick and generally reflected 
outwardly: the left or columella with one or more teeth or callous 
plaits. This genus derives its name from its resemblance to the 
ears of certain animals. It is a land shell found chiefly in the 
East and West India Islands. Sixteen species. 
Auricula Mide. Auricula scarabeus. 
A. Jude. A. bovina. 
A. sileni. A. caprella. 
A. leporis, ‘A. myosotis. 
A. felis. A. minima. 
A. Dombeiana. A. coniformis. 
A nitens. A. monill, 
A. angiostoma. A. labrella. 
11. Genus Cyclostoma. Pl. X. 
Animal. See Helix. 
Shell. ‘Terrestrial, distinguished from the preceding genera by 
a perfectly round aperture, reflected lip, and horny operculum, 
summit papillose; left edge having its origin very detached from 
the spire. Inhabits the East Indies. A few species are found in 
America. Thirty-eight species. 
Cyclostoma planorbula. Cyclostoma rugosa. 
C. volvulus. C. labeo. 
C. carinata. C. interrupta. 
C. sulcata. C. ambigua. 
C. unicarinata. C. semilabris. 
