192 Mr. W. H. Benson on new species 0/ Cyclostoma. 



discovered by that officer in 1843, on the day following that on 

 which I had bespoken his attention to terrestrial and fluviatile 

 conchology at the neighbouring mountain-lake "Bhimtal.^' I 

 have not access, at present, to a specimen, so as to be able, at 

 once, to confirm or reject the supposition. 



C. funiculatum, nobis. — Sowerby in his Supplement to his 

 Monograph has figured this species, and cited the Khasya Hills 

 as the habitat. I have never heard of its existence in that quarter. 

 My first specimen was obtained from Darjiling in the Sikkim 

 Himalaya, as stated in the Journ. Asiat. Soc. Calcutta, 1838, 

 as were also those which I subsequently sent to Mr. Cuming, 

 and furnished to Sowerby for the purpose of being figured. Even 

 in the adjoining country of Bhotan the species appears to give 

 place to C. pauperculum, Sowerby, and direct evidence is necessary 

 to establish its habitat in the mountain -group to the south and 

 east of the river Burhampooter. 



C. stenosto7na,Sow. — Sowerby gives Arabia, without any definite 

 locality in that extensive tract, for this species, on the authority 

 of Mr. Powis. The Paris Museum, according to PfeifFer, gives 

 the habitat as Pondicherry, and the large variety figured in 

 Kiister, pi. 20. f. 18, 19, is stated to have been received by Dr. 

 Pfeiffer from Delessert as from Cochin China. Dr. Jerdon sent 

 it to me from woods at the top of the Nilgherries, where the 

 small variety occurs as well as specimens equalling in size that 

 above referred to. It can hardly inhabit such various elevations, 

 or exist under such different hygrometi"ic conditions as are 

 necessarily involved in all these assigned localities. 



C. Menkeanum, Philippi. — PfeifFer has no information regard- 

 ing the locality of this species. It proves to be the shell which 

 I found abundantly near Point de Galle, and which I regarded 

 as a variety of C. Involvulus. Unfortunately nearly all my spe- 

 cimens, including beautifully marked varieties, were abstracted, 

 with other shells, from my baggage, on a railway, soon after my 

 arrival in England. Petit cites Ceylon, with a note of interro- 

 gation ; I am glad to be able to confirm his conjecture. I have 

 also a specimen from a collection of shells made at Trincomalee. 



I now proceed to give a geographical view of the species in- 

 habiting Hindustan, the neighbouring mainland, and the islands 

 in view from their shores, as far as our information extends at 

 present. 



We know of no species from Affghanistan, and the Punjab has 

 not as yet contributed anything to the genus. Beginning at 

 the north-west, C. strangulatum, Hutton, ranges along the 

 secondary heights of the Himalaya from the Sutlej as far as the 

 \vestern border of Nipal, where the observations of conchological 



