98 Mr. W. H. Benson im new Terrestrial Shells from Ceylon. 



Cyclostomacea. 



Cyclonlionjs Ci'vlnnicus, Sow. 



Nliiikiaiuis, Vb. 



liivolvulus, Miill., var. 



nlftbftstiinus, J'fr. 



]>unct:itns, Grat. 



Uuirdi. Pfr. 



Thwaitosi, Pfr. 



annulatus, Trosch. 



loxostoma, Pfr. 



])arapsis, Bens. 



I'arnia, Dens. 



Cratcia, Bens. 



Leptoponia lialo])liilum, Bens. 

 oroi)liiliim, Bens. 



Hannnciun, Pfr. 



conulus, Pfr. 



semiclausuni, Pfr. 



pcccilum, Pfr. 



elatinu, Pfr, 



apicatum, Bens. 



Auloi)oina Itieri, Grat. 



Aulopoiua helicinum. 



IIoH'mcistcri, IVosch., distinct. 



graiide, Pfr. 



Cataiilus Tcm])U'iiiani, Pfr. 



Layanli, Gray. 



Enrvtivnia, Pfr. 



i)vrami(latiis, Pfr. 



Thwaitoi, Pfr. 



Austcuianus, Bens, 



(lecorus, Bens, 



maifjinatus, Pfr. 



dnplicatiis, Pfr. 



aureus, Pfr. 



Cyelostomus ? gradatiis, Pfr. 

 Pterocyclos rupustris.ZioJS., var. picta, 

 Trosch. 



Cumingi, Pfr. 



Cingaleusis, Bens. 



Troscheli, Bens. 



bifrons, Pfr. 



[117 Land Shells.] 



Note. — Cyclophorus stenostoma, Sow. and Pterocyclos bilnbiatus, Sow., 

 liavc lately been sent to me as from Ceylon, without any definite locality. 

 They are both Nilglierry shells, and I consider their Cingalese habitat so 

 doubtful, that I have not introduced them in my list. 



The Vitrina of Ceylon have an Indian aspect. A membra- 

 naceous species also occurs in South India. 



The most characteristic form of Helix is that of H. Waltoni 

 and Skinncri. 



A considerable number of Cingalese Helices are of the vitrini- 

 form type, well represented in the Nilgherries by small species, 

 and by larger forms even to a considerable height in the 

 Himalaya, and througliout Hindostan. 



Several sjjecies are common to Hindostan (especially the Pen- 

 insula) and Ceylon. 



The group, //. Rivolii, erronea, and Charpentieri, is repre- 

 sented, on the east side of the Bay of Bengal, by H. refuga, 

 Gould, and Achatina, Gray. 



The Strejdaxes arc nearly allied to the Nil^herry species. 



Pupa Ceylanica is closely allied to the Nortli Indian P. bicolor, 

 Hutton, both belonging to the type Ennea, Ad. 



Some of the Bulimi are Indian in type, others approach the 

 I'hilijipiue forms. 



The Achatina' are of a type well represented in the Nilgherries, 

 and to which belong species from the Mahabaleshwur hills, 

 Bombay, Central India, Lower Bengal, Sikkim, and the Khasya 

 ranjre. 



