268 MELANIIDj;. 



Unfortunately not qviite 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 NIGBITELLA, Brot. 

 Conch.- Cab, II, 1S74, iype M. nigritina, MoreJet, 



55. Melania [Nigritella] guineensis. 



Melania guiueeusis, Reeve, Icon. fig. 142, 1S60, " Coast of Guinea." 



var. minor. 



4 Liberia ; coll. Dr. H. Doliru [23, 9^]. 



56. Melania [Nigritella] decoUata. 



Melania decollata, Lamarck, Hist. 1822, Riv. de la Guyane ; fide Brot = 

 M. erosa, Philippi \_not Less} = M. scnijjfilis, Reeve. 



3 La Guayra ; coll. A. Moielet, Esq. 



Sub- Genus PACHYGHILUS, Lea. 

 P. Zuol. S. 1S50, p>. 179, type P. cumingii. Lea [as Genus »oy.]. 



57. Melania [Pachychilus] largillierti. 



Melania largillierti, Philippi, Alb. I. 1S45, Centr. America ; fide Brot. -M, 

 rusticula, Busch ami M. ruhicunda, Reeve. 



var. intermedia. 



Melania intermedin, von dem Buich, Philippi, Abb. T, 1S45, " Lacus 

 Nicarigua. " 



2 Guatemala; coll. A. Morclet, Esq. 



58. Melania [Pachychilus] conica. 



'il[c\a.n\a conicix, 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. attemata, {^Anthony}, Reeve, Icon., Cuba. 



5 Cuba ; ex c. Dr. F. Stoliczka [ex Lnmlaucr]. 



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



