094 TRANS. OF THE ACAD. OF SCIENCE. 
Bluff, and in Grayson County, four miles north of Sherman. 
Re the latter locality it is associated with Scaphites vermi- 
culus. 
A. BRAZOENSIs, n. sp. 
Shell very large, discoidal, moderately compressed ; whorls 
five or six; last whorl strongly rounded on the dorsum, sides 
gently convex and bearing ten or eleven broad, slightly pro- 
minent, convex folds, which are most elevated in the middle 
from an inner volution, ha 
inches. In full grown shel 
we have seen from the Cretaceous strata 0 a 
gest specimen in the State collection measures as gel ae 
Greatest diameter, 1 foot 9 inches; thickness, 64 mcheS> 
width of last volution at aperture, 8 inches. ; 5 ieee 
orm. and Locality—Occurs in the Washita Limes % 
strata, at Shovel Cr nc 
near Austin, and very abundantly in sce ge ait? ain 
i ; ci me from 
Counties. I have also specimens before "Collected by 
Fd 
GENUS SCAPHITES. 
S. VERMICULUS, Nn. sp. 
Shell small, ovate, length not quite one-t 
the height; sides gently convex, dorsum s 
hird greater than 
trongly rounde 
