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



fiammulis attenuatis articulata, cincta ; spira depressa, apice pro- 

 minula, sutura distincta ; anfractibus 5 convexis, ultimo prope su- 

 turam depresso-planulato, periphaeria subangulata ; apertura vix 

 obliqua, subcirculari, ad apicem angulata, peristomate expansius- 

 culo, incrassato, albido, ad umbilicum subreflexo ; marginibus callo 

 crasso junctis, umbilico mediocri, profundo, pervio, anfractus 2 

 exhibente. 



Diam. maj. 35, rain. 28, axis 20 mill. 



Hab. ad latus montium " Nilgherries." Teste Jerdon. 



Distinguished by its peculiar sculpture, more depressed form, 

 rather wider umbilicus, and less expanded and less reflected 

 peristome, from the white-lipped shell figured by Sowerby, PI. 

 Supp. no. 31 B. f. 321, as C. Indicum, Deshayes, and by Pfeiffer 

 as C. Ceylanicum, Sowerby, who subsequently suppressed his 

 MS. name. It is also less darkly coloured than that species, 

 and the whitish ground forms a greater proportion in the mark- 

 ings. The red-mouthed var. of C. Indicum, figured by Sowerby, 

 was sent to me by Dr. Jerdon as found on the opposite face of 

 the Nilgherries. 



3. C. Aurora, nobis, n. s. 7 6**ty 'K* 



Testa anguste umbilicata, globoso-subturbinata, spiraliter 5-6 obso- 

 lete carinata, ferruginea, versus apicem rubente, oblique rugulosa ; 

 spira conoidea, apice obtusiusculo ; anfractibus A\ convexiusculis, 

 ultimi periphaeria obsolete angulata ; apertura ampla, vix obliqua, 

 circulari, superne angulata ; peristomate continuo, expansiusculo, 

 subincrassato, reflexiusculo, aurantio ; fauce rubente. 



Diam. maj. 28, min. 23, axis 19 mill. 



Hab. ad Darjiling Regionis Sikkiraensis ad montes Himalayanos. 



This species is decorticate, but from the colouring apparent 

 on the body-whorl within the aperture, where it is protected by 

 a transparent enamel, it would appear that the fresh shell is sur- 

 rounded, in the portion above the umbilicus, by narrow chestnut 

 bands closely set. It is nearly related to a gigantic species from 

 the same locality which is undescribed; but, having reason to 

 believe, from a written communication made to me by Dr. Pfeiffer, 

 that it is identical with an unedited species to which he has as- 

 signed the name C. Himalayanum, I refrain at present from de- 

 scribing it. The species in question is more depressed in pro- 

 portion than C. Aurora, and being similarly decorticate, is white, 

 with the exception of the peristome which is bright orange, and 

 the apex which in my specimen is reddish. C. Aurora has also 

 a narrower umbilicus. 



4. C. Cantori, nobis, n. s. 



Testa subanguste umbilicata, subgloboso-conoidea, spiraliter leviter 

 striatissima, fulvida, sub epidermide albido-csesia, rufo-fusco marmo- 



