464 Mr. W. T. Blanford on the Classification of 



V. But a solitary species is known, of another type, as yet 

 only found upon the Nilgiri Hills — C. cuspidatus, Bens. 1 have 

 been enabled to examine the operculum of a specimen belonging 

 to the Madras Museum, through the kindness of Capt. Mitchell. 

 It differs widely from that of any Cyclophorus, being far more 

 closely wound. The thick dark epidermis, forming a fringe 

 round the carination of the last whorl, the peculiar acuminate 

 form, and the concave sides of the spire form a combination of 

 characters which entitle this species to at least subgeneric di- 

 stinction. It may be called 



Craspedotropis, nov. subg. 



Testa acuminato-conoidea, carinata, epidermide fusca crassa fim- 

 briam carinae prsebente induta. Operculum arctissime spiratum. 



It is very probable that, as in the case of Cyathopoma, other 

 species may be found to inhabit the other hill-groups of the 

 peninsula or of Ceylon. Should they show no passage into 

 Cyclophorus, this may fairly be ranged as a distinct genus. 



VI. The typical species, e. g. C. invohulus, Miill., C. Indicus, 

 Desh., C. Aurora, Bens., C. fulguratus, Pfr., C. aurantiacus, 

 Schum., &c. These species are in many cases so variable, and 

 at the same time are distinguished from each other by such very 

 minute and unimportant characters, that a revision of the whole 

 group is most desirable. I regret very much that I have not 

 the materials at hand for the work. A very large weeding-out 

 of dubious species and of varieties is required ; but, in order that 

 this may be effectual, access to a greater number of the types of 

 described species than I can examine at present is requisite. 



14. Leptopoma, Pfr. 



Omitting the Ceylonese and South-Indian group already 

 mentioned, which certainly belongs to Cyclophorus, and passes 

 through C. cceloconus into the depressed section of that genus 

 comprising C. stenostomus and its allies (No. III. of the preceding 

 classification), there are no Leptopomata described from the Indian 

 peninsula*; but two are attributed to Ceylon, and three to 

 Burma. The two Ceylonese species (L. semiclausum, Pfr., and 

 L. apicatum, Bens.) I have never seen ; they may be a modified 

 form of the group of Cyclophorus halophilus, Bens., with thickened 

 peristomes. They do not appear to be true Leptopomata. The 

 Burmese species are 



L. Cyleus, Bens. Khasi Hills. 



L. Burmanum, Pfr. Tenasserim. 



L. aspirans, Bens. Tenasserim. 



* L. vitreum, Sow., is quoted from the Nilgiris ; but it is very impro- 

 bable that it has really been found at that locality. 



