278 MELANIIDE. 
Sub-Genus TIARA, Bolten. 
H. and A, Adams, Gen. Moll. I, 1855, as distinct Genus ; type restr. Brot, 
Mel. amarula. 
85. Melania [Tiara] amarula. 
Helix amarula, Linneus, Syst. Nat. XII, p. 1249, 1767, “ Hab. in Asia 
flwiis” ; Bruguidre, Enc. Méth., pl. 458, fig. 6 ; fide Merch should be 
“ Mel. melanus (Melas), Mtf.,” from Mauritius, &c. ; juv.=M. moreleti, 
Desh. [not Reeve], Traité Elém, Conch., Hab.? and of Brot, pl. 80, 
Sig. 2-24, 3 Juv. ?=Brot, l.c., pl. 28, fig. 5, B. and C.[as M. pagoda, 
var. |. 
1° Locality ? ; ex c. G. Nevill, Esq. [203, 11]. 
Unfortunately, I have no record concerning this specimen, 
well represented by M. Brot’s pl. 30, fig. 2 [M. moreleti]; 
the body whorl is smoother and less ventricose, spire more 
exserted than in young Mauritian specimens. 
5“ Trou d’Eau Douce,” Mauritius ; coll. G. Nevill, Esq. 
A very fine form, near M. Brot’s pl. 29, fig. 1A. 
5 Mauritius ; coll. G. Nevill, Esq. 
The typical form well represented by M. Brot’s, pl. 29, fig. 1. 
Despite M. Brot’s valued opinion [l.c., p. 291], I think I may 
state positively that Deshayes’ I. moreleti is the young of the 
typical form, notwithstanding the remarkable “ quasi” adult 
appearance that it invariably presents. These young specimens 
agree well with pl. 30, fig. 2A, 1.c.. Dr. Moerch considered a 
form from the Moluccas as the true Mel. amarula. 
subvar. depauperata. 
Conch.-Cab, II, pl. 29, fig. 1F, Madagascar. 
1 Nossi-bé, Madagascar ; coll. J. Caldwell, Esq. 
Long. 33, diam. 172 mil. Apparently a locally constant 
race. 
subvar. Cornuta. 
Mel. cornuta, Lea, P. Zool. 8. Madagascar. 
1 Madagascar ; coll. J. Caldwell, Esq. [conf. Conch.-Cab. IJ, pl. 29, 
fig. LA.]. 
