XOKTU AMERICAN COLKOPTKRA. 27 



but shallow, the outer not so sharply defined externally as in obesa, basal region 

 punctate, sides vaguely depressed. Elytra striate, strife punctate, intervals 

 slightly convex, smooth in both sexes. Body beneath rufo-piceous, the sides of 

 the two sterna and the first ventral segment coar.sely and rather deeply punctate : 

 epipleursp and legs paler than under side of body. Length .40— .46 iuch. ; 10— 

 11. .5 mm. 



The scutellar .stria is entire in all the .specimens examined. The 

 marginal line of the prosternnm is distinct at the tip only, the se- 

 tigerous punctures do not exceed four in number. The ocellate 

 punctures of the eighth stria are small and form a nearly contiguous 



series. 



In the male the middle and posterior tihiae are verv feebly arcuate. 

 It IS impo.-;sihle to state the arrangement of the anal punctures. 

 Three males have been examined, one has two anal punctures each 

 side as in obesa, one other has but one puncture, while the third has 

 two on one side and one on the other. ■ 



The characters given in the table will readily .separate this species 

 from obesa. In examining obesa it will be seen that the outer side 

 of the metasternal episternum is longer than the side next the me- 

 sosternum, while in the present species the anterior side is slightly 

 longer. 



Collected at Waco, Texas, by Belfrage. 

 Group californica. 



Antenna? ferruginous or i)ale brown, paler at base. Legs rufo- 

 piceous. iNIales with an oblong shallow fovea at the middle of the 

 prosternum, tip of prosternum without seta^. 



This group is the equivalent of the fourth as adopted by Zimmer- 

 mann and others, which I have attempted to define bv characters 

 n)ore easily to be appreciated. By the previous definitions the ante- 

 rior angles of the thorax are said to be not prominent, while in the 

 remotestriata group they are suppo.sed to be prominent. 



One species occurs in our fauna. 



A. califbriiioa Dej.— Oblong oval, narrower in front, piceous with dark 

 bronze surface lustre, shining. Head smooth, frontal impre.-^sions moderately 

 deep, usually broad, sometimes linear. Thorax nearly twice jus wide at base as 

 long, apex nearly truncate, sides arcuately narrowing from very near the ba.se 

 to the front, hind angles rectangular, di.sc moderately convex, sides not depressed, 

 ba.sal region with two impre.s.sions each side, the outer usually deeper, linear and 

 oblique, the inner broader, sometimes with a few punctures, the middle of the 

 basal region .somewhat wrinkled. Elytra finely striate, stria; not punctured, 

 intervals slightly convex. Body beneath piceous. with faint metallic lustre! 

 surface smooth: epipleurw and legs piceo-rufous. Length .26— .38 inch. ; 6.o— 

 9.5 lum. 



TRANS. AM. E.VT. SOC. XIX. FEBRUARY, 189-'. 



