261 



DESCRIPTIONS OF NEW CZA USILI^ FROM JAPAN AND YUNNAN. 



By E. R. Sykes, B.A., F.Z.S., etc. 



Read JIarch 8th, 1895. 



I HA YE recently received from Mr. H. Fulton three species of Clausilia 

 from Japan, all of which are new ; and three from Yunnan, of which 

 two are new, whilst the third species appears to be a variety of the 

 protean G. aeulus, Benson. This last-named species, therefore, ranges 

 from Yunnan in the south to Corea and Japan. The present form 

 is noteworthy for its veiy finely pointed apex. The varieties of 

 C. aeulus have already so many names that I forbear to add another. 

 Though apparently on the same watershed as the species described 

 by Mabille ^ from Tonkin, the present three Yunnan species do not 

 seem very nearly related to them. As to the Japanese shells, but 

 little appears, as yet, to be known from the Island of Shikoku, 

 whence they come. The types will be deposited in the British 

 Museum (ISatural History). 



1. CiAirsiLiA (Hemiph^dusa) Schmackeki, n.sp. Fig. 3. 



Testa elongato-fusiformis, hand nitida, sub lente obsolete striata, 

 albido-cornea, apice obtusulo; anfractus 10-^-, lente accrescentes, plano- 

 convexi, sutura impressa, simplice ; apertura rotundato-piriformis ; 

 peristoma incrassatulum, solutum, albidum ; lamella superior valida, 

 obliqua, marginalis; 1. inferior subprofunda, mediocris ; 1. subcolumel- 

 laris immersa ; plica principalis longa ; lunella distincta, arcuata. 

 Alt. 23-75, lat. 5'5mm. ; alt. apert. oblique 5-5, lat. apert. 4'5mm. 



Hab. — Kinnayama, Ins. Shikoku, Japonise. 



An interesting species, which, as Dr. Boettger points out to me 

 amongst other kind suggestions, is most nearly allied to C. plati/aucJicn, 

 von Martens. From this species it may be separated by its having 

 fewer whorls and by the different shape of the lunella ; moreover, it 

 comes from a different island. C. platyauchen is also a somewliat 

 more slender shell, with a more pointed apex, and the mouths of the 

 two species have not quite the same shape. 



2. Clausilia (Hemiph^dusa) ignobilis, n.sp. Fig. 5. 



Testa elongato-fusiformis, solidula, subtilissime obsolete striata, 

 opaca, albido-cornea, apice obtusulo; anfractus 10, plano-convexi- 

 usculi, lente accrescentes, sutura simplice ; apertura mediocris, 

 rotundato-piriformis ; peristoma incrassatulum, solutum, albidum ; 

 lameUa superior mediocris, obliqua, ad marginem attingens ; 1. inferior 

 ad marginem debilis sed in profundo validior, recedens ; 1. sub- 

 columellaris emersa, ad marginem 1. inferiorem fequans ; plica princi- 

 palis mediocris; lunella distincta, arcuata. Alt. 17, lat. 3-8 mm. ; 

 alt. apert. oblique 4, diam. 3 mm. 



1 Bull. Soc. Mai. Fr., vol. iv (1887), pp. 111-121. 



