330 AMERICAN PACHYBRACHYS (cOLEOPTERA) 



Distribution. — Lower California (San Felipe) — a single male 

 given me by Mr. Beyer. 



In most respects this species is much like integratus, and it is 

 not impossible that further specimens may prove the hind tibiae 

 to be similarly armed with a slender terminal spur. It is the 

 only species in our fauna, thus far known, with absolutely con- 

 tiguous eyes. 



6. Pachybrachys wickhami Bowditch 



Form rather short and stout; black, not shining; pubescence 

 dense, white, recumbent, nearly or quite concealing the sculpture 

 of the head and prothorax, and obscuring that of the elytra; 

 elytra luteous with black markings. Ave. length 3.1 mm. 

 Arizona to Lower California. 



Head very densely punctate, eyes more prominent than the anterior angles 

 of the prothorax, separated in the male by barely twice the length of the basal 

 antennal joint, slightly more distant in the female. Antennae (male) fully 

 attaining the middle of the elytra, much shorter in the female, pale at base, 

 outer joints more or less infuscate. 



Prothorax quite strongly transverse, sides feebly arcuate, base not much 

 wider than the apex as a rule, surface throughout rather finely, excessively 

 densely punctured and opaque. 



Elytra dull luteous with the typical spots black, the inner ones more or less 

 irregular and usually produced backward and inward to join the suture; all 

 the spots variable in extent and sometimes much reduced or in part wanting; 

 punctures moderately strong, irregular in the scutellar region, but forming 

 some more or less regular but scarcely impressed series on the disk and laterally, 

 the submarginal stria best defined and feebly impressed; secondary system of 

 finer interstitial punctures bearing the pubescence quite dense and conspicuous 

 over the entire surface. 



Beneath, body black, pubescence rather dense; legs rarely almost entirely 

 pale, the thighs usually more or less distinctly annulate with black — except 

 the front ones, the tibiae blackish in apical half; front claws not appreciably 

 enlarged in the male. 



Length 2.8 to 3.5 mm.; width 1.5 to 2 mm. 



Distribution. — Arizona: Tucson (Wickham), type; Hot Springs (Barber & 

 Schwarz). California: Palm Springs (Fenyes). Lower California: Santa 

 Rosa (Beyer). 



7. Pachybrachys thoracicus Jacoby 



Robust, black, prothorax at base and the raised basal margin 

 of the elytra red; rather densely silvery white pubescent, espec- 

 ially the head, pygidium and under surface. Ave. length 4.3 

 mm. Arizona. 



