Mr. W. II. Benson on a new Bulimus. 39^ 



scribed Helices. From the Khasia Ilills^ 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, under 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. Oocytes, 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, Chevalieri, Souleyet, 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 occupy at certain 

 distant intervals. 



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

 jiling ally of Oxytes, in which Mr. 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 which demands caution in dealing with them as 

 distinct species. 



Cheltenham, March 25th 1859. 



XL. — Descrijotion of a new Bulimus /"rom Jerusalem, 

 By W. H. Benson, Esq. 



Bulimus BenjamiticuSj Roth, MSS. 



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

 striata, ferruginea, circa aperturam albida ; spira sensim decres- 

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

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

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

 tenui junctis, columellari superne lato, expanse. 



Long. 71, diam. 3, apert. long. 2^ mill. 



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

 tum invenit Dom. E. Atkinson. 



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

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

 lem, by whom two specimens wxre subsequently obtained, one 

 of which was transmitted to the Leeds Philosophical Institution, 

 with a request that it might be published under 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. 



