218 MELANIID^. 



var. perdecoUata, nov. 



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



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



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

 cliaracterized by tlie strong decollation, erosion of the surface, 

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

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

 Very variable in size. 



Sub-Genus MELANATRIA, Bowditch. 

 Elem. Conch., 1S22, type Buc. fi,ummeum, Gmelin. 



2. Paunus [Melanatria] flumineus. 



Buccinura flumineum, Gmelin, Syst. Nat. 17S8, Hal. ? ,• fide Brot, var. = 

 Pirena aspera, Brot, var. = ? P. cecillei, PhilUppi, 1849, Madagascar, 

 var. = P. plicata, Meeve = lamarcJci, Val. = fraterna. Lea = Mel. 

 suhimbricata, Phil. \_spec,juv.'], var. = P. maura. Reeve, West Africa. 



var. plicata. 

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

 1 Madagascar ; 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" moans " 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 3Ielania costata, Quoy [Vanikoro']. 

 Not represented in the Museum, 



