Mr. W. H. Benson on new Cingalese Land-Shells. 383 



and other particulars. Thus we have H. Rosamonda and H. 

 semidecussata, and the Pfeifferian and Reevian types of H. 

 Emiliana, Pfr., as figured in Chemnitz and the ' Iconica.' Of 

 these I have specimens before me, collected by Mr. F. Layard ; 

 and, with reference to the difference of form and sculpture, I 

 regard them as distinct species, notwithstanding Pfeiffer's cita- 

 tion of Reeve's figures for his species. Not possessing the 

 typical form of H. coriaria, I cannot speak decidedly in regard 

 to the small depressed variety of that shell with an angular peri- 

 phery. I subjoin the characters of Reeve's type of H. Emiliana. 



Helix Cingalensis, B. n. s. 



Testa perforata, conoideo-lenticulari, superne confertim et arcuatim 

 costulata, striis confertis spiralibus granulatim decussata, lutes- 

 centi-cornea, translucente, subtus mtidula, radiatim striatula, striis 



. obsoletis spiralibus vix sculpta; spira conoidea apicem versus 

 attenuata, demum acuta, sutura marginata; anfractibus 6 con- 

 vexiusculis, lente accrescentibus, ultimo non descendente, ad peri- 

 pheriam acute compresso-carinato, carina marginata, basi modicfe 

 convexa ; apertura obliqua, late angulato-lunari, peristomate sim- 

 plici recto, margine columellari superne breviter triangulari-reflexo. 



JHam. major 17, minor 15, axis 9 mill. t ,^n 



yn. Helix Emiliana Reeve, Conch. Icon. pi. 108. f. 608 , b. 



Hab. in pago Matelle. 



The radiating ribs above are arcuate, the spiral ones closely 

 set, and about double the number in each whorl compared with 

 the true H. Emiliana, from which it also differs in its very acute 

 keel and marginate sutures. The apex is also more attenuate 

 and acute, and the base is less convex. The difference in the 

 two species will be evident on comparing Reeve's figure with 

 that given in Kiister's 'Chemnitz/ pi. 158. f. 33-5. Pfeiffer's 

 /typical shell was got by Mr.' F. Layard at Maduranatagalle, 

 .near Ellegamme in East Matelle. 



Helix regulata, B. n. s. 



Testa vix perforata, depressa, tenui, oblique obsolete striatula, utro- 

 que spiraliter elegantissime acuducto-striata, fusco-cornea, pellu- 

 cida, politissima ; spira depresso-conoidea, apice obtusiusculo, 

 sutura impressa submarginata ; anfractibus 3^ convexiusculis, 

 celeriter accrescentibus, ultimo ad peripheriam subangulato, sub- 

 tus convexiore, antice non descendente ; apertura ampla, obliqua, 

 rotundato-lunari, peristomate recto, acuto, margine columellari 

 arcuatim descendente, superne supra perforationem reflexiusculo, 

 marginibus remotis subconniventibus, callo tenui junctis. 



Diam. major 11, minor 9, axis 6 mill. 



Habitat ad Kaluganga, pagi Matelle orientalis, necnon ad Katukelle- 

 kande. 

 Distinct in appearance from any of the known small translu- 



