H. C. FALL 397 



Tins species ioolvs a good deal iilce a small nubigcnus bceausc 

 of the similar dorsal elytral cloud; here, however, the suffusion is 

 generally less complete. In addition to the smaller size, this 

 species differs distinctly from nubigenu.s in its less dense ])unc- 

 tuation, more widely separated e3^es, more conspicuous ocular 

 lines, which are more distant from the eyes, nmch more regularly 

 striate el\'tra, with the marginal interspace less numerously 

 punctate, front claws of male a little less noticeably enlarged. 

 Punicus is more nearly related to and very like those extreme 

 forms of diversus with the discal elytral cloud, but the latter have 

 the eyes distinctly less remote. 



SO. Pachybrachys melanostictus Suffrian 



Black and dull yellow, mottled, sometimes the ]mle, sometimes 

 the dark areas, in excess, prothoracic M usually heavy; eyes 

 widely separated, front with distinct ocular lines; elytral striae 

 well defined at sides and rear, outer interspace with few punctures; 

 front claws of male a little enlarged. Ave. length 2.9 mm. 

 Pacific Coast States and those immediately adjoining. 



Head unevenly rather coarsely punctured, markings variable in (;le\-eloi)ment, 

 the front often predominantly yellow in the male, but more heavily marked 

 with black in the female, the parts most persistently yellow being a spot on 

 either side of the middle opposite the upper margin of the eyes within the 

 ocular lines, and a median spot between the antennae. Eyes separated by 

 fully twice the length of the basal anteimal joint in the male, and by about 

 tliree times the length of the joint in the female. Antennae dull yellow basally, 

 outer joints blackish, fullj- three-fourths as long as the body in the male, basal 

 joint rather large, tenth about three times as long as wide; in the female about 

 two-thirds as long as the body, basal joint smaller, tenth about two and one- 

 half times as long as wide. 



Prot/iorax moderately transverse in the male, more strongly so in the female, 

 widest at basal third (cf), or about basal fourth (9), moderately nan-owed 

 anteriorly, a little constricted at base, with or without slight sinuation before 

 the angles; punctuation rather coarse and fairly close, a little imeven, si)arse 

 along the side margins; M broad as a rule, often involving the entire surface 

 except a longitudinal sj^ot each side of the middle extending forward from the 

 base a variable distance, a narrow median apical line, and tlie side margins 

 widening at the anterior angles. 



Elytra diffusely punctate in a baso-sutural triangle, exterior and jjosterior to 

 which the punctures are arranged serially, the striae finely imi)ressed at sides 

 and rear, the fifth and sixth more or less confused before the middle as a rule; 

 marginal interval with a few jjunctures in basal half; shield variable, usually 

 rather small and incons])icuous, often obsolete. Stanchird sjjots may all be 

 present and are then usually more or less sutfusedly connccled. In the paler 



TRANS. AM. ENT. SOC, XLI. 



