174 PllOCKEDINGS OF THE MALACOLOGICAL SOCIETY. 



Easily distill 2;uislial)le from all its allies in bcinp; acutely carinatcd, 

 by the absolutely Hat spire, and by the comparatively gradual increase 

 of the whorls. The apex consists of nearly two whorls, which are 

 more strongly gi'anulated than the rest. 



CCELOrOMA, A. Ad. 



13. CfELOPOMA BAECiiETr, n.sp. PI. IX. rig. 2. 



Testa modica, late umbilicata, umbilico -^ latitudinis testa) aquante, 

 subconico-discoidea, solidula, sordide olivaceoHavescens, opaca ; spira 

 parum elata, pirdepresse conica ; apex acutulus, prominens, niger. 

 Anfr. 5 convexi, regulariter accrescentes, sutura profunde impressa 

 disjuncti, oblifjuc striatuli, ultimvis teres, ad aperturam valde 

 desc(nidens, ij altitudinis testa; a^quans. Apcrtura modice oblicjua, 

 nondum diagonalis, subcircidaris, sed altior quam lata ; peristoma 

 continuum, breviter adnatum ibique paulo protractum, duplex, 

 margine interne recto, leviter protracto obtuso, externo valde expanso 

 et reflexo, albolabiato, ad suturam levissime inciso et subemarginato. 

 Operc. cxtus conulum modicum, anfr. 5 gradatis exstructum, apieem 

 planatum exhibens. Diam. maj. 9-5-ir5, diam, min. 8-9-6 mm.; 

 alt. 5 -0-6 -6 mm. ; diam. apert. 4*6-5 mm. 



JIah. — Snowy valley near Ningpo. 



Specimens received from Dr. Barchet of Mngpo, probably from a 

 difi'erent locality, are identical, except in size, as the following measure- 

 ments will show : diam maj. 10-12 5, diam. min. 8*5-1 0'5 mm. ; alt. 

 6-7*5 mm, ; diam. apert. 5-6 mm. The species also occurs in the 

 Dalanshan, near Ningpo. 



Until now only one species of this genus was known from China, 

 viz. C. Frienianum., Heude (J^loll. terr. p. 95, t. xxix. fig. 2, 

 Spirostoma), from Ouyuau, Southern Nganhwei, which, however, 

 differs in being considerably larger (two authenticated specimens from 

 Heude have the following dimensions, viz. diam. maj. 15*8-17*6, 

 diam. min. 13*5-15 mm. ; alt. 6-5-7*5 mm. — the larger specimen 

 being the less elevated one ; diam. apert. 6-6*4 mm. ; 5^ whorls). 

 Heude gives the height in his description as 10 mm., which may be 

 a mistake ; he further states the number of whorls to be 4, whilst 

 own specimens show 5i. C. Frienianum is, besides, comparatively 

 flatter, has a larger umbilicus, the apex is mammillated, the aperture 

 is placed much more obliquely. The operculum forms a much higher 

 cone, tapering to a finer point, with more numerous, and more 

 gradually increasing whorls. C. Japonicum, A. Ad., in which the 

 margin of the aperture is not expanded, is very different from our 

 species. That the creation of the new genus Spirosfo/na was un- 

 necessary, both IMoellendorlf (Jahrb. 1886, p. 101) and Crosse (Journ. 

 de. Conch. 1885, p. 56) have already shown. 



