278 MELANIID^, 



Sub- Genus TIABA, Bolten. 



JS. and A. Adams, Gen. Moll. I, 1855, as distinct Genus ; ttfpe restr. Brot, 

 Mel. amarula. 



85. Melania [Tiara] amarula. 



Helix amarula, LinncBus, Si/st. Nat. XII, p. 1249, 1767, " Hah. in AsicE 

 fiiiviis " ; Bruguiere, Enc. Meth., pi. 458, Jig. 6 ; fide 3Icerch should be 

 " Mel. melanus (Melas), Mtf., "from Mauritius, See. ; juv. = M. moreleti. 

 Desk. \not Reeve], Traite JElem. Conch., Hah. ? and of Brot, pi. 30, 

 fig. 2-2 A. ; juv. l^^Brot, I. c, pi. 28, fig. 5, B. and C. las M. pagoda, 

 var.]. 



1 Locality ? ; ex c. G. Nevill, Esq. [20|, 11]. 



Unfortunately, I have no record concerning this specimen, 

 ■well represented by M. Brot's pi. 30, fig. 2 [iUT. 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 pi. 29, fig. lA. 



5 Mauritius ; coll. G. Nevill, Esq. 



The typical form well represented by M. Brot's, pi. 29, fig. 1. 

 Despite M. Brot's valued opinion [1. c, p. 291], I think I may 

 state positively that Deshayes' M. moreleti is the young of the 

 typical form, notwithstanding the remarkable " quasi " adult 

 appearance that it invariably presents. These young specimens 

 agree well with pi. 30, fig. 2A, 1. c. Dr. Moerch considered a 

 form from the Moluccas as the true Mel. amarula. 



subvar. depauperata. 



Conch.-Cah. II, pi. 29, fig. IF, Madagascar. 



1 Nossi-be, Madagascar ; coll. J. Caldwell, Esq. 



Long. 33, diam. 17| mil. Apparently a locally constant 

 race. 



subvar. cornuta. 



Mel. cornuta, Lea, P. Zool. S. Madagascar. 



1 Madagascar; coll. J. Caldwell, Esq. [conf. Conch, -Cab, II, pi. 29, 

 fig. lA.]. 



