268 * MELANIIDiE. 



UnfortuDately not quite adult. A large, tumid form, appar- 

 ently even more aberrant than the above-quoted figure, or than 

 any of the varieties figured by Kobelt. 



Sub-Genus NIGUITELLA, Brot. 

 Conch.- Cab. II, 1874, type 31. nigritina, Morelet. 



55. Melania [Nigritella] guineensis. 



Melania guineensis, Reeve, Icon. fig. 142, 1860, " Coast of Ouinea.** 



var. minor. 



4 Liberia ; coll. Dr. H. Dohru [33, 9|]. 



56. Melania [Nigritella] decoUata. 



Melania clecollata, LamarcTc, Hist. 1822, Riv. de la Guyane ; fide Brot = 

 M. erosa, Philijppi [not Less'] = M. sculptilis. Reeve. 



3 La Guayra j coll. A. Morelet, Esq. 



Sub-Genus PACHYCHILUS, Lea. 



P. Zool. S. ISoO, p. 179, type P. cumingii, Lea [as Genus nov."]. 



57. Melania [Pachychilus] largillierti, 



Melania largillierti, Philippi, Abb. L 1845, Centr. America ; fide Brot. -M, 

 rusticula, Busch and M. rubicunda, Reeve. 



var. intermedia. 



Melania intermedia, von dem Busch, Philippi, Abb. I, 1845, " Lacvs 

 Nicarigua. '* 



2 Guatemala; coll. A. Morelet, Esq. 



58. Melania [Pachychilus] conica. 



Melania conica, d'Orbigny, Hist. Nat. Cuba, 1841; fide Brot^M. nigrata 

 Poey, Mem. Cuba II, 1852 = M. scarabus, Rv., Icon., Bab. ? = M. 

 gemella, Rv.; Icon., Cuba=M. attenuata, [Anthony'], Reeve, Icon., Cuba. 



5 Cuba ; ex c. Dr. F. Stoliczka [ex Landauer], 



2 Cuba; ex c. Dr. F. Stoliczka [labelled" M. nigrata, Poey."]. 



