$92 —” TRANS. OF THE ACAD. OF SCIENCE. 
from that species. It is desirable that a direct comparison 
should be made with authentic European s specimens, in order 
to settle the question 
Locality.—White and Dark Limestone, Guadalupe Mowr- 
tains. 
Genus TEREBRATULA. 
> a3: ‘ 
T. eroneata, Schlotheim. 
{ have before me a number of examples of Terebratula 
which appear to be identical with this Po variable 
Permian shell, Some of them present a aracters of 
a elongata proper ; ee have the wider and ile re inte 
varie 8 
T. PERINFLATA, n. Sp. : ooo ee e | 
Shell ‘ovate, very gibbous, width and thickness sbonte ual, 
one-third jonger than wide in full front 
satber acon titented ro ine he eee a of t tre 
Ventral valve strongly convex, more “elevated Fon 
dite valve felt 3 1arke with a low sinus, W 
obsolete before reaching the middle of the ¥: 
beck ostended. bacvecrinms Pa hers tee matted 9h 
