40 GEO. H. HORN, M. D. 



have the two pmall clypeal denticles, but by accident these niiglit be 

 lost in some specimens ; in this event the form of the hind angles of 

 the thorax and the sculpture of the intervals of the elytra Avill dis- 

 tinguish them without reference to the male characters. 

 One specimen. Camp Grant, Arizona. 



A. consontaneiim Lee— Moderately elongate, parallel, conv'ex, yellowish 

 testaceous, thorax ami suture slightly darker. Antennfe pale. Head convex, 

 without trace of tuhercles, sparsely punctate, the middle of front almost deprived 

 i)f them, intervals finely alutaceous; clypeus hemihexagonal, very feebly emar- 

 •rinate, angles hroadly rounded, sides feebly arcuate, gense slightly prominent, 

 obtuse; margin not fimbriate. Thorax slightly narrowed in front, sides feebly 

 arcuate, hind angles broadly rounded, base regularly arcuate, a fine marginal line, 

 disc moderately convex, sparsely punctate over the entire surface, the intervals 

 finely alutaceous. Elytra not wider than the thorax, humeri obtuse, sides very 

 feebly arcuate, disc rather deeply striate, strise finely crenately punctured, inter- 

 vals convex, alutaceous, sparsely finely punctulate. Body beneath sparsely punc- 

 tulate. Mesosternum not carinate. Anterior tibia; smooth in front, strongly 

 tridentate externally and crenate above, the first tarsal joint shorter than the 

 second. Posterior femora very sparsely punctate, the first tarsal joint not as long 

 as the next three. Length .18-. 20 inch : 4..5-.'5 nun. 



The male has the anterior tibial spur short, stout and strongly 

 curved, and the thorax less distinctly punctate. 



A very distinct species, but without any notable peculiarities. In 

 color it resembles some of the forms of /ividiis, but here the resem- 

 blance ceases. 



Occurs from Canada to Missouri, Kansas and New Mexico, but 

 not common. 



A. Iiifeoliis n. sp. — Moderately elongate, convex, smooth, shining, body 

 beneath, head and thorax lirownish or piceo-testaceous. Abdomen and elytra 

 dirty yellow, femora yellowish testaceous, tibia? slightly darker. Antennse pale. 

 Head convex, without trace of tubercles, surface alutaceous, smooth, a very few 

 indistinct punctures posteriorly; clypeus very feebly emarginate in front, the 

 angles broadly rounded, sides feebly arcuate, gense very slightly prominent sub- 

 acute, margin fimbriate. Thorax nearly twice as wide as long, slightly narrower 

 in front, sides feebly arcuate, hind angles very obtuse, base arcuate at middle, 

 then slightly sinuate, oblique near the hind angles, without trace of marginal 

 line ; disc moderately convex, sparsely indistinctly punctate, sides sparsely 

 punctate. Elytra not wider than the thorax, moderately elongate, humeri ob- 

 tuse, sides parallel, disc rather deeply striate, stria? crenately punctured, inter- 

 vals convex, very sparsely indistinctly punctulate. Body beneath almost devoid 

 of punctures. Mesosternum not carinate. Anterior tibife smooth in front, tri- 

 dentate externally and crenate above, the fir.st tarsal joint shorter than the sec- 

 ond. Posterior femora almost entirely smooth, the first tarsal joint shorter than 

 the next three. Length .20-.22 inch ; .5-5.5 mm. 



