28 
University of Texas Bulletin 
are at first parallel to the anterior pair, then bent abruptly 
backwards and weaken d till scarcely traceable. No other 
sculpture is present on the dorsal surface. The surface of the 
sloping and inwardly bent ventral side is almost smooth. It is 
finely granulate only opposite and just behind the frontal. 
Opposite the front pair of furrows is a small notch, in the 
sharp margin separating the dorsal and ventral surfaces, from 
which a fine, line-like furrow passes forward in a moderate curve. 
Localities . — Shoal Creek, Barton Creek, Austin, Texas. 
