SHUMARD—NEW FOSSILS. ~ 401 
marked with numerous fine striae of growth, which are most 
pee i 
mensions.—Length, 1.02; height at 
Form. and Loc-—In Dark bc TF the Coal 1 Meas- 
ures, ‘Sierra pe ag and four miles west of Sierra Hueco, 
El Paso county, Texas. All the specimens that have come 
under our observation are silicified. 
Pixseorthehiii PROUTIANA, n. sp. 
Shell small, turreted, conical, spiral angle 43°; volutions 
about five, gene earinated § in the middle, flattened on ei-| 
ther side o of the ; last volution Mi eae an 
tow asa carina, beneath rounded ; ce of vi 
lutions payee with distinct rovolvtig lines, vith are finely 
and most prominent below the carina; these are 
= pega strize ya finer lines of growth; um- 
Sy ahah su ‘an 
0.41 o "an ineh : 5 ith, 08, 
ope an d a conical, tran e 
at hed and gently con 
| angle “of this this species varies S Secidorably with 
Shell. The oe of a full grown scferaai is 
a young specimen, 56° 
Jon County, reg ae 
|  PERORNATAy n. sp 
