1901.] NATURAL SCIENCES OP PHILADELPHIA. 655 



Species of unknown subgeneric position. 



The following forms have been too imperfectly characterized to 

 permit their reference to subgeneric groups : 

 C. ( INCTICOLLIS Ehrmann. Province Tosa, Shikoku. 

 C. CRASSILAMELLATA Ehrmann. Province Tosa, Shikoku. 

 C. GOULDII A.. Adams. Tago. 

 C. UIMJE Ehrmann. Province Tosa, Shikoku. 

 C. LIRULATA A. Adams. Mososeki. 



C. NODULIFERA v. Mart. Nippon, probably from near Yeddo 

 (Donitz). Based upon a single, perhaps abnormal, 

 specimen. 



C. PINGUIS A. Adams. Kino-o-sima. 

 C. PROBA A. Adams. Kino-o-sima. 

 C. SPRETA A. Adams. Tago. 

 C. STENOSPIRA A. Adams. Kino-o-sima. 

 C. STIMPSONI A. Adams. Tsu-sima and Awa-sima. 



APPENDIX. 



The following species have been received since the preparation 

 of the foregoing list, bringing the number of recognized species to 

 99, with 37 subspecies or varieties ; exclusive of 11 species of inde- 

 terminate position, enumerated above. 



Section HEMIPHJ2DUSA Bttg. 



C. SUBIGNOBILIS Pils. 9 Hirado, Hizen (Y. Hirase). 

 C. TANTILLA Pils. 10 Goto, Uzen (Y. Hirase). 



' C. subignobilis n.sp. Rather stout, fusiform, light brown, lightly 

 striate, composed of 9^ whorls. Spire strongly attenuated above, the apex 

 small. Aperture subtrapezoidal, the lip reflexed and thickened. Superior 

 lamella rather small, inferior very deeply receding, subcolumellar emerging. 

 Principal plica rather short. Lunella lateral, arcuate or bow-shaped. 

 Length 15, diam. 3.3 mm. Like C. ignobilis Sykes, but with smaller 

 early whorls. 



10 C. tantilla n.sp. Small, brownish, fusiform, striatulate, the last 

 whorl distinctly striate ; whorls 8, the second rather large. Aperture 

 small, squarish -ovate, the lip well reflexed, somewhat thickened. Superior 

 lamella !-mall, ioferior deeply receding, subcolumellar either immersed or 

 emerging. Lunella oblique, united above with the middle of a short upper 

 palatal plica. Length 9.5, diam. ?.5 mm. 



