COLEOPTKRA. 187 



cinereous on tlie flanks of the head and pronotuni, piceous on the middle 

 portions of the disk, also fulvo-cinereoiis in two hroad lateral vittae extend- 

 ing from the humeri of the elytra to the apex and slightly increasing in width 

 through the basal third, also on the scutellum and very narrowly along 

 the suture ; .on the remainder of the elytral surface dark piceous-brown by 

 reflected light, dark reddish-purple by transmitted light ; integuments uni- 

 formly piceous-black, very finely feebly and closely punctate, much more 

 finely so on the pi'othorax than on the elytra. Head slightly wider than 

 long; interocular surface broadly and very evenly convex throughout; eyes 

 continuous in curvature with it and somewhat large, rather finely granu- 

 lated ; anterior margin of the epistoma narrow and very feebly arcuate, 

 slightly less than one-half as long as the distance between the eyes ; last 

 joint of the maxillary palpi more than twice as long as wide, so obliquely 

 truncate as to be scalene in outline, truncated edge very broadly arcuate ; 

 antennae short, scarcely longer than the width of head, first and second 

 joints nearly equal in length, shorter than the third, first four joints sub- 

 cylindrical, five to ten decreasing in length, narrowed toward base, trape- 

 zoidal, the former slightly longer than wide, the latter distinctly transverse, 

 eleventli longer than wide, oval in outline, obtusely rounded at tip, joints 

 five to eleven strongly flattened. Prothorax one-third wider than long, 

 rather strongly and evenly convex; sides feebly and evenly arcuate ; apex 

 . very slightly shorter than the base, broadly and somewhat angularly 

 arcuate, the latter strongly and abruptly arcuate through the middle third. 

 Scutellum slightly wider than long, evenly and acutely rounded behind, 

 sides feebly arcuate, surface flat, finely and asperately punctate. Elytra at 

 base just visibly narrower tlian the pronotum ; sides parallel and nearly 

 straight for three-fouii;hs the length from the humeri, thence rather obtusely 

 rounded behind, each elytron evenly and rather acutely rounded at apex ; 

 disk conjointly very slightly more than twice as long as wide. Legs and 

 under surface of the body black, with ^ne fulvo-ciuereous pubescence; 

 posterior tarsi longer than the femora, first joint much longer than the next 

 two together, slightly shorter than the tibiae ; tibiae and first three tarsal 

 joints densely fimbriate at tip with short stout equal spinules ; claws feebly 

 arcuate, not at all cleft nor pectinate, but having on the inner edge two or 

 three very minute tuberculiform denticulations ; spurs of posterior tibiae 

 rather long, very stout, acute, straight and very unequal. Length from tij^ 

 of anal style 4.5 mm. ; width of pronotum 1.7 mm. 



Arizona, 1. 



According to the table given by Mr. J. B. Smith, tliis species would 

 enter the first of his groups in the second division of Mordella, and I 

 see nothing there which will at all fit the above description. 



XYLOPHILUS Latr. 



X. densus n. sp. — Form elongate, rather slender, sub-cylindrical, in- 

 tense black throughout, antennae piceous, last joint pale testaceous, femora 

 piceous, tibiae and tarsi paler, dark testaceous ; pubescence very fine, short, 



