Mr. W. H. Benson on new species of Cyclostoma. 189 



I got specimens of this minute species, with other minute 

 land shells as yet undescribed, in long tree moss, in which spe- 

 cimens of jasper, from the deep valley of Musmai, below Cherra 

 Poonjee, had been packed on the spot. 



9. C. cceloconus*, nobis, n. s. 



Testa subaperte umbilicata, turbinata, tenui, scabre confertim radiato- 

 striata, olivaceo-lutescente, fascia unica submediana, strigisque un- 

 datis, radiatis, rufo-fuscis, ornata; spira conoidea, apice acutius- 

 culo ; sutura bene impressa ; anfractibus 4i valde convexis, ultimo 

 cylindrico ; apertura obliqua, ovato-circulari, peristomate tenui, 

 acuto, umbilico prof undo omnes anfractus exhibente. 



Diam. major 13, minor 11, axis 9 mill. 



Hab. ad radices montium Nilgherries Indise Orientalis. Teste Jerdon. 

 This shells holds an intermediate place between the planorbi- 



form Cyclostomata and the turbinate Cyclophori with a moderate 



or narrow umbilicus. 



10. C. cuspidatum, nobis, n. s. 



Testa umbilicata, acuminato-conoidea, oblique striata, lineis spira- 

 libus circumdata, epidermide olivaceo-fusca ; spira elongata, atte- 

 nuata, apice mamillari ; anfractibus 5, primis convexis, ultimo et 

 penultimo superne convexiusculis, lira unica praeditis, ultimo subtus 

 convexo, periphseria carinata, carina lamellato-flmbriata ; basi 3- 

 lirata, lira subumbilicari fimbriata ; apertura perobliqua, subcir- 

 culari, superne subangulata, dimidium longitudinis aequante, peri- 

 stomate tenui, acuto, margine columellari expansiusculo ; umbilico 

 mediocri profundo, anfractus plures exhibente. 



Diam. major 6, minor 5, alt. 4 mill. 



Hab. ad apices montium Nilgherries. Teste Jerdon. 



This species is singular on account of its attenuated spire, and 



the hirsute lamellar appendages to the keels, at the periphery 



and umbilicus ; but the latter character is apt to be obliterated. 



11. C. Trochlea, nobis, n. s. 



Testa anguste umbilicata, pyramidato-turrita, glabra, albida, apice 

 obtusiusculo, sutura impressa ; anfractibus 5, angulato- convexis, 

 superne 1 carinatis, ultimo tricarinato, carina 1 superiori, 1 sub- 

 mediana, 1 circumumbilicari ; apertura obliqua, circulari, ^ longi- 

 tudinis aequante ; peristomate acuta, ad finem carinae inferioris vix 

 angulato ; umbilico pervio. 



Diam. 2, long. 3 mill. 



Hab. rarum in montibus Nilgherries. Teste Jerdon. 



This minute shell is singular in its turrited form, and in the 

 arrangement of its keels, which gives a flat cylindrical appearance 

 to the periphery of the lower whorl. I do not know any species 

 which can be compared with it. 



* koTXos, cavus ; kS>vos, conus. 



