94 PROCEEDINGS OF THE ACADEMY OF 



pubescent ; angles with a faint carina parallel to the sides ; scu- 

 tellum rugose, not carinate ; el^'tra imbricate; body beneath 

 bluish-black, densel3^ clothed with yellowish pubescence. L. .37. 

 Colorado (Leconte). 



Claws separate, prosternum not sinuate in front ; elytra rounded, 

 slightly serrate, ventral segments with the suture almost apparent. 



A. Couesii, Lee. 



Elongate, golden-green, head dcepl}' sulcate, but with two ob- 

 long tubercles between the eyes ; thorax subtransverse, with ver}' 

 deep medial groove rugose at the bottom (the ridges smooth), 

 front angles produced, sides thickl}' flavo-pubescent, carina strong, 

 curved ; scutellum smooth, with a deep punctate fovea occupying 

 the middle ; elytra rugose punctate, with a smooth violet dorsal 

 carina, not quite reaching the apex; the sutural groove is pubes- 

 cent, except two spots, one after the other, before the apex, the 

 outer groove bare and more coarsel}' punctate, apex acuteh' ser- 

 rate ; sterna pubescent, abdomen shining, scarcely' punctate in the 

 middle, sides with densely pubescent spots. L. .42. Arizona 

 (Cones). 



Identified Avith A. perlucidus^ Gory, b}"- H. Deyrolle, but only 

 the type could render such identification possible. 



Prosternum flat, not depressed behind. 



A. tezanus, sp. n. 



9. Yer}' closely allied to A. Couesii, but copperj'^ above; head 

 with the tubercles more developed, so as to leave a frontal pit ; 

 thorax uniformly rugose, carina much fainter, sides not pubes- 

 cent, scutellum carinate; elytra more sparingly punctate, simi- 

 larly pubescent. Sides of metasternum and a lateral spot on the 

 third segment only pubescent. L. .38. Texas (Leconte). 



A. floridanus, sp. n. 



Allied to A. interruptus, Lee, but front narrow, deeply sulcate ; 

 thorax strongly rugose, carina well marked; elytra not sulcate, 

 but with three pubescent spots, one basal, one before the middle, 

 and at three-fourths near the suture ; ventral segments punctulate, 

 last three witli lateral pubescence. L. .30. Florida (Horn). 



J*. Prosternum hairy, first segment Avith an elongate pubes- 

 cent fovea. 



A. imbellis, sp. n. 



Closely allied to A. egenus, but rather broader, entirely uni- 



