82 NORTH AMERICAN 



mixture of flat tulxTcles and small punctures, very feebly iridescent ; labrum 

 black, very short and broad, broadly angnlate, over six times as wide as long ; 

 antennae very short, scarcely as long as the head, first joint rather robust, 

 strongly narrowed toward base, nearly twice as long as wide, second conical, 

 rapidly narrowed toward tip, as wide at base as the tip of the first, bases 

 in contact throughout, slightly shorter than the first, third very slender, 

 cylindrical, slightly shorter than the second, fourth two-thirds as long as the 

 third, equal in thickness, fifth trapezoidal, wider than long, sides convergent 

 toward base, the outer very strongly so, the inner very feebly, the outer 

 angle being much further from the axis of the antenna than the inner, 

 remaining three joints broader than long, truncate at tip, except the eighth, 

 which is broadly rounded, compressed, pubescent, joints one to five glabrous. 

 Prothorax much wider than the head, three-fonrths wider than long; sides 

 feebly convergent from the apex to the base, feebly angnlate at the anterior 

 third, elsewhere nearly straight ; apex very slightly longer than the base, 

 broadly eniarginate throughout, bottom of the emargination very bioadly and 

 feebly arcuate, sides very widely divergent anteriorly ; base very broadly 

 angnlate, middle portion very slightly more strongly produced and rounded; 

 apical angles acute, posterior obtuse, but not at all rounded ; disk very 

 slightly convex, having seven narrow longitudinal furrows, and six flat 

 elevations, the latter finely sub-verrucate, each flat tubercle having a small 

 distinct puncture; median channel narrow and straight, second irregularly 

 twisted ; sides feebly reflexed, and very finely, feebly, and evenly undulated 

 along the edge. Elytra at base equal in width to the pronotum ; disk widest 

 at three-fifths its length from the base, where it is about one-fourth wider 

 than the pronotum, twice as long as wide, acutely rounded behind ; sides 

 arcuate; strongly convex; feebly striate, striae very strongly punctate; 

 punctures round, very deeply impressed, much closer than the width of the 

 intervals, which are very feebly convex, each having a regular row of very 

 fine punctures along the crest ; humeri prominent, prominence elongate. 

 Scutellum excessively minute, nearly circular, black, flat, about one-half 

 wider than one of the strial punctures. Legs long and slender ; anterior 

 tibiae rather strongly sigmoid, wider toward tip, fimbriate along the outer 

 side with two rows of very small spinules, the upper row longer and much 

 more widely spaced ; terminal spines small, equal, and arcuate ; corresi>ond- 

 ing tarsus rather slender, first joint shorter than the second, next three 

 equal, fifth as long as the first four together ; claws abruptly swollen at 

 base ; last joint of the posterior tarsi very much shorter than the preceding 

 together. Mesosternuin feebly, but very distinctly carinate ; middle coxae 

 narrowly separated. Abdominal segments nearly equal in length, strongly 

 opai^ue and grauulose, sparsely pubescent. Length 3.13—3.8 mm. 



Arizona (Morrison), 3. 



Till' clytrji an' inaculalt' witli a tew narrow longitudinal dashes of 

 dark casiancous, especially three spots lieliind the middle, one sutural 

 and two lateral. 



At'ler vainly endeavoring by every means to see nine joints in tlie 

 aiitemiai', I iiave given it vip and am eom[)elled to state that I can 



