92 Mr. W. H. Benson on new Land Shells from Ceylon. 



marginibus callo tenuissimo junctis, columellari arcuato, superne 

 breviter reflexo, perforationem inconspicuam fere tegente. 



Diam. major 20, minor 16, alt, 10 mill. 



Hab. in agris altis Insulae Ceylon " Horton Plains " dictis. 



4. Helix Puteolus, nobis. 



Testa perspective umbilicata, orbiculato-depressa, lenticulari, supra 

 spurca, albida, subr emote radiato-lirata, subtus cornea, radiatim 

 striata ; spira planiuscula apice vix prominulo, sutura impressa ; 

 anfractibus 51, angustissimis, convexiusculis, arete convolutis, om- 

 nibus filoso-carinatis, superne sulco carinaque secunda parallelibus 

 munitis, ultimo subtus planiusculo, ad marginem umbilici medio- 

 cris profunde excavati, cyathiformis, valde compresso ; apertura 

 angusta, securiformi, peristomate recto, acuto. 



Diam. major 5^, minor 5, axis 2^ mill. 



Hab. in saxis ad portas " Balcadua " dictas, Insulse Ceylon. 



This little shell is singular on account of its sculpture, the 

 narrowness of the whorls, and the sudden and deep excavation 

 of the well-like umbilicus. Vide * Annals/ vol. vii. p. 305. 



5. Helix Mononema, nobis. 



Testa angustissime perforata, trochiformi, radiato-striata, corneo- 

 albida, glabra, non nitida, translucente, spira conoidea, apice ob- 

 tuso, sutura distincta ; anfractibus (S^7, superne convexiusculis, 

 filo unico, elevato, tenui, mediano cinctis, ultimo acute filoso-cari- 

 nato, subtus subplanulato ; apertura verticali, securiformi, peri- 

 stomate recto, acuto, margine columellari brevi, verticali, reflexo, 

 perforationem subtegente. 



Diam. major 5, minor 4^, axis 4 mill. 



Hab. ad Heneratgodde. 



Allied to the Himalayan H. fastigiata, Hutton, and to the 

 Bengal H. Barrackporensis, Pfr., but well-distinguished by its 

 more depressed form and by the filiform line, which, in addition 

 to the keel on the last whorl, runs along the central part of each 

 of the upper whorls. Mr. Layard had not been able to procure 

 a second specimen. 



6. Helix marcida, nobis. 



Testa subobtecte perforata, depressa, solida, superne oblique regu- 

 lariter costulata, subtus Iseviori, sub epidermide fulvido-cornea al- 

 bida ; spira vix elevata, sutura impressa, apice obtusiusculo ; an- 

 fractibus 6, lente accrescentibus, ultimo rotundato, subtus planulato, 

 apertura sublate lunata, obliqua, peristomate recto, tenui, margine 

 columellari oblique descendente, crassiusculo, superne breviter re- 

 flexo, perforationem subtegente. 



Diam. major 14, minor 12, axis 8 mill. 



Hab. in Insula Cevlon. 



