IGO Mr. H. B. Piesfon on nrip 



It may also be of interest here to slate tlint speciiiuMis of a 

 ppecies undoubtedly bel(>ni;i)i<;- to tlie Indian genus Catnpto- 

 ceras were forwarded to the anther with tlie ))ieseiit colh^ction ; 

 this interesting form was colhctcd in tiie Koganiura-Osaka 

 district of Japan, and a specimen liad abeady reached the 

 writer witli a request for confirmation of its generic position 

 from Mr. Bryant Walker, of Detroit, Mich., who, he uiuler- 

 stands, intends to describe it at an early date. 



Class GASTROPODA. 



Order PULMONATA. 



Suborder G E r ii i L a. 



Family SiiccneidaB. 



Lithotis japom'ca, sp. n. 

 (PI. IX. figs. 6, 6 a.) 



Shi'U imperforate, small, ovate, reddi.-;h brown ; whorls 2i, 

 the first small, the last very large, transversely striate and 

 slighllv angled above, laterally compressed ; columella margin 

 obliquely descending, flattened, broad; labriun continuous, 

 acute; aperture large, slightly dilated. 



Alt. 1-5, diam. maj. 4, diara. min. 3 mm. 



Aperture: alt. 2*5, diam. 2 mm. 



JJab. L :ke Biwa, J;ip;>n ; on the lower surface of stones' 

 at the edge of the lake [IJr. jS\ Annand(de). 



The shell in general form recalls, in miniature, the genus 

 SHptaria. 



Suborder H T G R P H I L A. 



Family Limnseidae. 



Choanomphalus japonicus, sp. n. 

 (PI. IX. figs. 2, 2 a, 2 6, 2 c.) 



• Shell rather small, subovate, with swollen spire, thin, pale 

 yellowish brown ; whorls 3, lapidly increasing, the last 

 descending in front, tricarinato, the middle carina being 

 situated at the periphery, the upper and lower about equi- 

 distant from it ; betweeji thecarinai appear somewhat distant, 

 microscopic, spiral striw, while the whole shell is trans- 

 versely obliquely striate ; suture impressed ; umbilicus 

 moderately wide and deep, occupying about one-tifth of the 

 total diameter of the shell ; columella margin very obliquely 

 descending, extending above into a fine, polished, restricted, 



