BULLETIN NO. ^. 



GENUS LOXONEMA, Phillips. 



LOXONEMA PEORIENSIS. (sp. IIOV.) 



Shell below the medium size, elongate conical, spire very grad- 

 ually tapering to a minute point. Volutions about sixteen, convex 

 mereasmg very gradually in size, the lower ones a little flattened 

 above the middle.- Suture moderately deep, surface smooth. Aper- 

 ture nearly round. 



Length f inch ; diameter of the lower volution ^^ inch. Spiral 

 angle 16.° 



This species is nearly related to L. cerithiformis of Meek and 

 Worthen, described and figured in Vol. II of these reports, page 

 379. PI. 31. fig. 13, a, b, c, but may be readily distinguished from 

 that, by its more slender form and more numerous volutions. 



Position and locality: Coal Measures, Peoria county, 111 



No. 2532 of the Illinois State collection. 



Collector, Mr. Gifford. 



LOXONEMA QUADRI-CARINATUS. (sp. UOV.) 



Shell long, cylindrical, gradually tapering; volutions eight or 

 more, convex, the last one sloping abruptly to the umbilical region 

 below, and more gradually to the suture above. Volutions orna- 

 mented with three strong revolving carinae on the lower portion 

 of the volutions, and a less defined one on the upper sloping 

 side below the suture. Transverse lines of growth are visible un- 

 der a lens on the abruptly sloping under side of the last volution. 

 Aperture ovate. 



Length of a specimen preserving six volutions -}| inch ; diame- 

 ter of the lower volution /v inch. Spiral angle 25.° 



Position and locality: Coal Measures, Peona county 111 



No. 2534 of the Ilhnois State collection. 



Collector, Mr. Gifford. 



GENUS OETHONEMA, Meek and Worthen. 



ORTHONEMA CARBONARIA. (sp nOV.) 



Shell very elongate, gradually tapering from the base to the apex 

 with nine or more flattened volutions that are defined above and 

 below by a narrow suture, and a strong revolving carina. Under 

 side of the last volution obliquely flattened; umbilicus closed 

 ^orm of aperture not clearly defined, but apparently subovate 

 Lines of growth are clearly visible on the flat portions of the volu- 

 tions. Length of a specimen showing seven volutions, -ff inch • 

 diameter of lower volution } inch. Spiral angle about 20.° 



This shell is known only from an imperfect example, and is 

 nearly related to 0. Salteri, of Meek and Worthen, Vol II of 



