Zoological Society. 61 



Ilab. Seychelles Islands. 



Length -6, diam. '2 of an inch. 



Remarks. — The most marked character of this species is the 

 notched channel of the base, wheie the colour is rather darker. The 

 outer lip is thick and rounded. The superior part of the whorl in 

 some specimens is lighter in colour. In its general aspect this species 

 resembles Melania simplex, Say. The epidermis is very lustrous. 

 The aperture is nearly one-half the length of the shell. 



Melania contracta. M. testa Icevi, ovato-elongatd, pallida, 

 tenui ; spird elevatd ; anfractibus novem, planulatis ; aperturd 

 ovatd, constrictd, ad basim canaliculatd, intus vel albidd vel 

 rufd ; columella contortd reflexdque. 

 Hab. Seychelles Islands. 

 Length -8, diam. '3 of an inch. 



Remarks. — This, like the dermestoidea^ herein described, from the 

 same locality, is remarkable for the notched channel at the base. 

 They may easily be distinguished by the contracta having a more 

 elevated spire, greater number of whorls, being of a lighter colour, 

 and in the aperture being longer and more twisted. There is a 

 disposition in the upper part of the columella to be thickened and 

 rufous, and the twist and backward turn are very remarkable. The 

 aperture is about one-third the length of the shell. 



Melania ferruginea. M. testa Icevi, nitidd, ventricoso-conoi- 

 ded, injlatd, crassd, ferrugined; spird subelevatd ; suturis vald^' 

 impressis ; anfractibus sex, convexis ; aperturd magnd, subro- 

 tundd, intus albidd, 

 Hab. Zanzibar, East Africa. 

 Length '9, diam. '4 of an inch. 



Remarks. — The rather inflated form of this species gives it the 

 aspect of some of the PaludincB. A single specimen, and not an 

 entirely perfect one, has only been submitted for examination. It 

 seems to differ from any described species, while it has no very di- 

 stinctive character. The aperture is very nearly one half the length 

 of the shell. 



Melania impura. M. testd Icevi, subcylindraced, compressd, 

 subcrassd, viridi- corned ; spird subelevatd; suturis vald^ im- 

 pressis; anfractibus planulatis, supra geniculatis ; aperturd ellip- 

 ticd, subcontractd, ad basim retusd, intus albidd ; columelld re- 

 gular iter incurvd. 

 Hab. Naga, province of South Cumarines, Luzon, Philippines. 

 Length "9, diam. '35 of an inch. 



Remarks. — The angle on the superior portion of the whorls gives 

 this species a very distinct aspect. This angle is not very acute, but 

 it is very marked in all the four specimens under examination. The 

 apex in each being decollate, the number of whorls cannot of course 

 be correctly ascertained ; there may be about seven. The colour of 

 the epidermis is uniform anji of a greenish horn-colour. The aper- 

 ture is rather more than one-third the length of the shell, and is 

 rounded and retuse at the base. 



