36 GKO. H. HORN, M. D. 



A. auratsi Dej. — Obloiif», moderately elongate, piceons, surface lironzed 

 shining. Antennae im'e brown, three basal joints paler. Head smooth, frontal 

 impressions deep, but short. Thorax about half wider at base than long, slightly 

 narrowed in front, apex scarcely at nil einarginate. sides arcuate in front, nearly 

 parallel behind, hind angles sharply rectangular, disc convex, with two basal 

 impressions each side, the inner larger, the basal region usually more or less 

 punctate, sometimes smooth. Elytra slightly wider at base than the base of 

 the thorax, finely sharply striate, striae not punctate, intervals flat. Body be- 

 neath piceous-black shining, the abdomen usually slightly castaneous. Legs 

 rufo-testaceous or slightly piceous. Length .24 — 30 inch. ; 6 — 7.5 mm. 



The scutellar stria is usually long, free at its apical end, sometimes 

 it is feeble and interruptetl. The series of ocellate punctures of the 

 eighth stria is widely interrupted at middle. 



This species resembles sci.tn/a and longula of the Trisena series, but 

 may be at once known by the form of the terminal spur of the front 

 tibia. The resemblance to imitatrix of the preceding group is even 

 greater, but apart from the smooth sternum of the male auruta it 

 also differs in the form of the hind angles, which are alway.s sharply 

 rectangular. 



Occurs in the Pacific region from British Columbia southward to 

 San Diego, Cal. 



A. liai'paliiia Lee— Form oblong, rufo-piceous or brownish, ujoderately 

 .shining. Anteuuse rufo-testaceous. Head smooth, with feeble frontal impres- 

 sions. Thorax less than twice as wide at middle as long, slightly narrowed in 

 front, apex feebly emarginate, tiie angles not i)rominent, sides arcuate in front, 

 straight and oblique at basal half, liind angles sharply rectangular, basal region 

 vaguely bi-impressed each side, the entire basal region punctate, especially near 

 the angles. Elytra slightly wider at base than the base of the thorax, disc mod- 

 erately deeply striate, the striie finely crenately punctured, intervals convex. 

 Body beneath usually paler than above; sides of metasternum, the episterna 

 very coarsely and closely punctate, sides of first three ventral segments more 

 sparsely punctate. Legs rufo-testaceous. Length .-rS— .28 inch. : 6.25— 7 mm. 



The scutellar stria is long and entire, arising at the base of the 

 second stria and joining the first stria posteriorly. The series of 

 ocellate punctures is interrupted at middle. 



'J'he males of this species have a more shining surface, the fen)ale 

 elytra are subopaque. 



The authors who have dealt with this species seem to have over- 

 looked the very coarse punctures of the under side of the body. 



Occurs in Utah and New Mexico, near Santa Fe. 



A. SubSBiiea Lee. — Form oblong-oval, narrowed in front, piceous. with faint 

 bronzed .surface, shining. Antennae rufo-testaceous. Head smooth, front with 

 short, linear, slightly oblique impressions. Thorax about one-half wider at base 



