Vol. XXXl] ENTOMOLOGICAL NEWS lOI 



of prothorax, serrate from the fourth joint. Head closely and coarsely 

 punctured; front broadly and rather deeply longitudinally impressed. 



Prothorax one-fourth wider than long, not narrowed at base; sides 

 slightly arcuate; surface rugous, with coarse distantly placed punctures 

 in the depressions; discoidal impression deep, broadly ovate behind, nar- 

 rowed in front; the lateral impressions deep, extending from the anterior 

 third, obliquely backward to middle of the disc; there is a round swelling 

 at the posterior angles, with a round fovea behind it close to the base; pos- 

 terior angles without any trace of a carina. Scutellum deeply impressed 

 in the middle and finely rugous. Elytra slightly sinuate behind the humeri 

 and dilated behind the middle, nearly concealing the abdomen; apices 

 separately rounded, finely serrulate; disc slightly flattened at middle, 

 basal impressions moderately deep; sutural ridge elevated behind the 

 middle; surface densely imbricate, shining. Prosternal lobe broadly 

 emarginate. Prosternum coarsely punctured, the punctures becoming 

 denser on the intercoxal process, not pubescent; intercoxal process with 

 its margins slightly raised, the apex obliquely narrowed. 



Abdomen moderately strongly punctured, slightly rugous at the sides; 

 lateral carina of the basal segment distinctly curved; first ventral segment 

 roundly convex at middle, not pubescent; suture between the first two 

 ventral segments entirely obliterated at the sides; vertical portions of all 

 the segments, except the last, pubescent posteriorly; pygidium not cari- 

 nate. 



Anter'or and middle tibiae arcuate, with a slight mucro at the inner apex; 

 the posterior tibiae simple, flattened on the inner side, and with a row of 

 stiff hairs on the posterior half of the outer edge. Claws broadly toothed, 

 the lower portions not inverted, similar on all feet. Posterior tarsi not as 

 long as the tibiae; the first joint one-fourth as long as the tibia. Length 

 8.5 mm.; width 2.2 mm. 



9. — Differs from the male as follows: More robust, head, thorax and 

 beneath cyaneous; elytra cupreous, shining. Antennae shorter, only 

 reaching a little beyond the anterior margin of the prothorax; vertical 

 portions of the abdominal segments more distinctly visible frum above; 

 tibiae not mucronate; fore tibiae slightly arcuate; middle and hind tibiae 

 simple. Length 10 mm.; width 3 mm. 



One pair of adults taken in coitu in the Huaciuica Moun- 

 tains, Arizona, August 2, 1905, and donated to Mr. Nicolay 

 by Mr. Chas. W. Leng. Specimens in Mr. Nicolay's collec- 

 tion. 



In Dr. Horn's table of Agrilus (1891, Trans. Amer. Ent. 

 Soc, vol. XVIII, pp. 283-287) these specimens run to con- 

 cinnus Horn, but differ from that species by the different 

 coloration in the sexes; the last abdominal segment rounded 



