AURICULID^. 3 



Melampus ohliquus is referred by Say to South Carolina. Alexia 

 7nt/osotis was probably introduced from Europe ; I have never 

 known of its being found south of New York harbor. Carychium 

 exiguum will probably be found in all the States. The other 

 species are confined to the coast of Florida and the Gulf of 

 Mexico, some of them being common to Cuba and other West 

 Indian Islands. 



There are several genera of Auriculidae not represented in 

 this country, some attaining a large size, and with more brilliant 

 coloring than our plain species, such as Pythia, Gassidula, Au- 

 ricula, &c. They are widely distributed over the globe, reaching 

 the greatest perfection in the Pacific Islands. 



The family has been subdivided into Auriculinae and Melam- 

 innse, characterized by the comparative thickening or expansion 

 of the outer lip. 



Subfamily AURICULIN^. 



Animal terrestrial, living chiefly on the land. Tentacles de- 

 veloped. Shell with the inner lip plicate; outer lip thickened 

 or expanded. 



AURICrLA, Lamakck, 



No species of this genus, as now restricted, is found in the 

 United States. The following list contains all the species de- 

 scribed as Auriculae, and the position in which they are now 

 classed. 



Spurious Species. 



Auricula bidentala, Gld. &c., is the same as Melampus. 

 Auricula biplicata, Desh., is tlie same as Melampus bidentatus. 

 Auricula cingulata, Pf. &c., is the same as Tralia. 

 Auricula cornea, Desh., is the same as Melampus bidentatus. 

 Auricula denticulata, Gld., DeK., is the same as Alexia myosotis. 

 Auricula Jloridana, Shcttl., is the same as Tralia. 

 Auricula jaumei, Mittre, is the same as Melampus bidentatus. 

 Auricula obliqua, DeK., is the same as Melampus obliquus. 

 Auricula sayii, Kijster, is the same as Leuconia sayii. 

 Auricula stennstoma, KiisTEK, is the same as Tralia cingulata. 

 Auricula bidens, Say of Pot. et Mich. Mr. Say never described any such 

 species. 



