218 MELANIID^. 



var. perdecoUata, nov. 



Brot, pi. 44, fig. 3, Habit. ? 



■ 10 Southern Province, Ceylon; coll. G. Nevill, Esq. 



Long. 76^, diam. 21 mil. Apparently a form constantly 

 characterized by the strong decollation, erosion of the surface, 

 and iron-rust, reddish colour of the peristome, &c. ; mostly with 

 specimens of an oyster attached, half as large as themselves. 

 Very variable in size. 



Sub-Genus MELANATEIA, Bowditch. 



Elem. Concli., 1822, type Buc. flumineum, Gmelin. 



2. Faunus [Melanatria] flumineus. 



Buccinura flnmineum, Gmelin, Syst. Nat. 1788, Rob. ? ,- fide Brot, var. = 

 Pirena aspera, Brot, var. = ? P. cecillei, Phillippi, 1849, Madcgascar, 

 xiar. = P. plicata, Reeve = lamarcki, Val. = fraterna, Lea = Mel. 

 suUmbricata, Phil, [spec.juv.'], var. = P. maura, Reeve, West Africa. 



var. plicata. 



Pirena plicata, Reeve, Icon., 1859, Madagascar. 

 1 Madngascar ; coll. J. Caldwell, Esq. 

 Agrees exactly with M. Brot's pi. 43, fig. 2. 



3. Faunus [Melanatria] spinosus. 



Pirena spinosus, Lamarck, Anim. sans Vert., 1822, Madagascar. 

 5 Ranomafane [Madagascar] ; coll. J. Caldwell, Esq. 



I am informed that " Ranomafane " means " warm water," 

 and that the above specimens were taken from some hot springs 

 in the bed of the river; they agree with M.. Brot's pi. 42, 

 fig. 1 A and B. 



? Genus PIRENOPSIS, Brot. 

 Conch.' Cab. II, 1879, p, 408, type Melania costata, Quoy \VaniJcoro'\. 

 Not represented in the IVLuseum. 



