Mr. W. II. Benson on a new Bulimus. 393 



scribed Helices. From the Khasia Hills^ Mr. Theobald's re- 

 searches have furnished four species previously unknown, besides 

 fixing the exact localities of those described from the same 

 quarter twenty-three years ago. 



Mr. Theobald has, moreover, either already published, or is 

 about to publish in an Indian Journal, nnder the names of 

 Helix Castor and H. Pollux, two shells which I consider to be in 

 an immature condition. One of these' I have no hesitation in 

 referring to the young of H. Oxytcs, B. ; the other, if not the 

 young of a variety of that shell with a more conoid spire, is pos- 

 sibly that of H. Cymatium, B., discovered by Dr. Cantor in the 

 island called Pulo Lancavi, or of H. Clievalieri, Souleyct, an in- 

 habitant of the Malayan Peninsula, and which, if found also in 

 the Khasia Hills, will not extend through a longer range of 

 country than H. Castra, B., has been proved to occu])y at certain 

 distant intervals. 



An examination of the young of H. Cycloplnx, B., the Dar- 

 jiling ally of Oxytes, in which j\Ir. W. Blanford considered, 

 though with some hesitation, that he had detected a new shell, 

 confirms my opinion that these large sharply-keeled specimens 

 are in a state wdiich demands caution in dealing with them as 

 distinct species. 



Cheltenham, March 25th 1859. 



XL. — Description of a neiu Bulimus /rom Jerusalem. 

 By AV. H. Benson, Esq. 



Bulimus Benjamiticus, Roth, MSS. 



Testa perforata, subulato-turrita, solidula, oblique rugose subplicato- 

 striata, ferruginea, circa aperturam albida ; sjnra scnsim dccres- 

 cente, satis gracili, apice obtuso, sutura profundiuscula ; anfracti- 

 bus 6 subconvexis, ultimo i longitudinis sequante, subtus rotundato; 

 apertura obliqua, ovali, peristomate recto, acuto, marginibus callo 

 tenui junctis, columellari superne lato, expanse. 



Long, "i^, diam. 3, apert. long. 2\ mill. 



Habitat prope Hierosolymam. Detexit Dr. Roth ; specimen descrip- 

 tum invenit Dom. E. Atkinson. 



The late Dr. Roth first discovered this species while in com- 

 pany with Mr. Edward Atkinson, a surgeon residing at Jerusa- 

 lem, by whom two specimens were subsequently obtained, one 

 of which was transmitted to the Leeds Philosophical Institution, 

 with a request that it might be published nnder Dr. Roth's ma- 

 nuscript designation. 



The shell has certain relations with Bulimus acutus, Miill., but 

 may at first sight be distinguished from the young of that species, 



