440 TERTIAKY INSECTS OF NUETII AMEEIGxi. 



2. Pkocydnus devictus. 



PI. 28, Fig. 4. 



Head minute, subcirciilar, hardly a fourth as wide as the thorax, its 

 posterior tliird sunken in the thorax, which is here narrowly 'hut rather 

 deeply emarginate to receive it. Thorax scarcely twice as broad as long, 

 tapering from the base and with the sides strongly arcuate, so that the 

 whole is nearly semicircular but for the narrow rounded emargination (not 

 shown on the plate) for the head ; basal margin truncate or scarcely con- 

 vex ; surface perfectly smooth and regular, with an anterior, transverse, 

 arcuate, impressed line opening forward, half as broad as and one third the 

 depth of the thorax. Scutellum large, triangular, smooth, the base fully 

 three-fourths the width of the thorax, nearly three-fourths as long as broad, 

 and reaching half-way to the tip of the abdomen. Hemelytra with the 

 corium reaching half-way to the tip, uniformly coriaceous, testaceous, with 

 faint and shallow equidistant and rather distant punctse. Hind til)ia3 densely 

 spiny. Abdomen very broad and full, of nearly equal length and breadth. 



Length of body, 5°""; breadth, 3.1"'°. 



Florissant. One specimen, No. 11225. 



3. Procydnus divexus. 



Head imperfectly preserved in both the specimens at hand. Thorax 

 shaped much as in the species which have preceded this, twice as long as 

 its middle length, with a very deep rounded emargination in front, less than 

 a third the width of the thorax and three times as broad as deep, the lobes 

 beside it well advanced, the surface finely and closely but not very deeply 

 punctate. Scutellum with similar sculpture, the apex scarcely less than 

 rectangular, the base about two-thirds as wide as the thorax. Hemelvtra 

 having the similarly punctate corium occupying fully the basal three-fifths, 

 the full and well rounded abdomen of equal length and breadth and punc- 

 tate. Hind tibiae very slender and rather feebly spined. Whole body 

 uniformly blacki.sh brown. 



Length, 4.7""" ; breadth, 3""". 



Florissant. Two specimens, Nos. 2132, 13154. 



