462 Mr. W. H. Benson on new Indian Species of Achatina. 



The following shells are added to complete the history of the 

 known Indian species of Achatina : 



Achatina pr&lustris, B. 



Testa ovato-oblonga, pertenui, fragili, irregulariter plicato-striata, 

 nitente, pallide luteo-cornea ; spira pyramidata, apice obtuso, su- 

 tura profundiuscula, subcrenulata ; anfractibus 8 convexiusculis, 

 superne prope suturam tumidiusculis, ultimo % testae superante, 

 subinflato ; apertura verticali, semiovali, latiuscula, columella sub- 

 recta, vix curvata, basi oblique truncata, peristomate recto, acuto. 



Long. 33, diam. 17 mill. ; apert. 15 mill, longa, 9 lata. 



Habitat in provincia Orissa prope Midnapore, Balasore, et Cuttack. 

 Teste W. Theobald. 

 This is the largest known Indian form of the type to which 



the Cingalese and Nilgherry shell, Ach. Ceylanica, Pfr., belongs. 



It was found by Mr. Theobald in Mangoe topes, both in the 



hills and plains. 



Achatina Chessoni, B. 



Testa ovato-turrita, superne attenuata, scabre plicato-striata, striis 

 minutissimis confertis obsoletis spiralibus decussata, fulvo-cornea, 

 vel purpureo-fusca, translucente, nitidula ; spira turrita, apicem 

 versus obtusiusculum attenuata, sutura impressa, crenulata; an- 

 fractibus 1 1 1 convexiusculis, ultimo ^ testae superante inflatiusculo ; 

 apertura subverticali, semiovali, latiuscula, columella subrecta, 

 albido-callosa, basi vix oblique truncata, peristomate recto, tenui. 



Long. 37, diam. 15 mill. ; apert. 14 mill, longa, 8 lata. 



Habitat in montibns Mahabaleshwar. Detexit J. Chesson. 



There is also a more slender variety, 33 mill, in length by 12 



in breadth. 



This fine shell, the largest of the forms intermediate between 



Ach. prcdustris of the eastern coast of the Peninsula and the 



north-eastern A. Cassiaca, was found on the high mountain 



group overlooking the western coast of the Indian Peninsula, 



south of Bombay, by Mr. J. Chesson. It was accompanied by 



the following species. 



Achatina notigena, B. 



Testa elongato-conica, superne attenuata, tenui, subcostulato-striata, 

 fulvo-cornea, nitida, pellucida; spira turrita, superne attenuata, 

 apice obtuso, sutura impressa, irregulariter crenulata ; anfractibus 

 9-10 convexiusculis, ultimo % testae non attingente ; apertura sub- 

 verticali, anguste semiovali, columella vix arcuata, subverticali, basi 

 suboblique truncata, peristomate recto, tenui, marginibus callo 

 tenui junctis. 



Long. 20, diam. 7 mill. ; apert. 6 mill, longa, vix 4 lata. 

 Var. inflatior, ovato-turrita, long. 22, diam. 8 mill. 



Habitat in montibus Mahabaleshwar cum praecedente, teste J. Ches- 

 son ; necnon prope Bombay, W. Theobald. 

 This shell has relations to Ach. Chessoni in the attenuation of 



