LUCERNA. 1 99 



or obtusely angulated ; aperture oblique, nearly horizontal, 

 elliptic ; peristome thickened, the margins joined by a callus, 

 the basal dilated, refiexed, internally dentate, externally deeply 

 scrobiculate. 



St/ /i. Plcurodonta, Fischer. Caprinus, Montf. Cepolis, 

 Montf. Lucernella, Swains. 



Ex. L. acuta, Lamarck, pi. 77, fig. 9. Shell, L. acuta, 

 fig. 9, a. 



The species of this group, as restricted, are chiefly inha- 

 bitants of Jamaica, Martinique, and Guadaloupe. The 

 species of Serpentulus chiefly inhabit the West-Indian 

 Islands; S. lampas is from Haiti; the sub-genus Obba is 

 principally from the Philippines and the Moluccas; Dentel- 

 laria is from Guadaloupe and Martinique ; the species of 

 Labyrinthus are from South America and the West Indies; 

 and the species of Isomeria are from New Grenada. The 

 group Semicoma, or Chloritis is from Papua and Java; and 

 the species of Erigone are from the Philippines. 



Species of Litcerna. 



acuta, Lam. ingens, C. B. Adams. 



acutissirna, Desh. invalida, G. B. Adams. 



anomala, Pfeiff. Juno, Pfeiff. 



Bainbridgei, Pfeiff. lucerna, Midi. 



Bourcieri, Pfeiff. lychnuchus, Mull. 



calomorpha, Jonas. Marti niana, Pfeiff. 



candescens, C. B. Adams. nobilis, C B. Adams. 



cara, C. B. Adams. Okeniana, Pfeiff. 



carraelita, Ferus. patina, C. B. Adams. 



cepa, Midi. peracutissiina, C. B. Adams. 



Chemnitziana, Pfeiff. perplexa, Ferus. 



cymatodes, Pfeiff. picturata, C. B. Adams. 



fortis, C. B. Adams. propenuda, C. B. Adams. 



fuscolabris, C. B. Adams. Schroeteriana, Pfeiff, 



