300 CASEY 



coarsely and rather closely punctured, becoming gradually mod- 

 erately coarsely, very densely and coalescently so laterally ; scu- 

 tellum moderate, punctate in basal half; elytra one-half longer 

 than wide, very slightly wider than the prothorax and barely three 

 times as long, obtusely and ogivally rounded behind in nearly 

 apical third, the sides very feebly arcuate, the punctures coarse, 

 strongly muricate and forming close-set series laterally, smaller 

 but still strong and confused near the suture; abdomen minutely, 

 sparsely and very inconspicuously punctured medially. Length 

 8.0 mm. ; width 3.5 mm. California (Colorado Desert). 



egregium n. sp. 



20 — Body stout in form, of large size 21 



Body more elongate and smaller in size 22 



21 — Form broadly oblong-elongate, only moderately convex, shining, 



piceous-black, the legs and antennae rufous; head well developed, 

 much more than half as wide as the prothorax, the sides moder- 

 ately converging and arcuate, the frontal margin broadly and dis- 

 tinctly sinuate, the punctures rather small but perforate, separated 

 by nearl}' twice their own widths on the vertex, the occipital 

 smooth spot rounded and sharply defined ; prothorax short, four- 

 fifths wider than long, the sides parallel, subevenly and distinctly 

 arcuate, the basal angles obtuse, not blunt or at all prominent, 

 the punctures rather small but strong and sparse near the middle, 

 gradually becoming very coarse and finally dense but not very 

 coalescent laterally ; scutellum moderate, transverse ; elytra three- 

 fifths longer than wide, not quite four times as long as the pro- 

 thorax and about a fifth wider, obtusely ogival at apex, the sides 

 rounding slightly at base to the humeral angles, the punctures not 

 very close-set in series throughout, moderately small but strong 

 suturally, coarse and muricate laterally, not at all larger or con- 

 fused above the humeri, the interstitial punctures nearly similar, 

 more widely spaced in single series, confused on the first two 

 intervals ; abdomen feebly rugulose, finely but strongly, sparsely 

 punctured medially. Length 9.1 mm. ; width 3.5 mm. Arizona 

 (locality unrecorded) extensum n. sp. 



Form and coloration nearly similar; head subsimilar, except that the 

 frontal margin is evenly and rectilinearly truncate and the punc- 

 tures very much coarser, shallow and separated by about their 

 own widths, the occipital smooth spot small and ill-defined; pro- 

 thorax similar, except that the sides are irregularly rounded, more 

 abruptly convergent and straight or subsinuate anteriorly, the disk 

 widest before the middle, the basal angles more nearly right and 

 very feebly prominent, the punctures strong and rather sparse 

 medially, becoming more abruptly very coarse, densely crowded 

 but not very coalescent in about lateral fifth ; scutellum moderate ; 

 elytra fully two-thirds longer than wide, more obtusely, ogivally 

 rounded at apex, scarcely a sixth wider than the prothorax and 

 not quite four times as long, the sides similarly rounding at base 



