31 1 

 AMERICAN COLEOPTERA. oii 



antennal joints thicker in the male mnst be referred to Group 1. The 

 pygidium of the male is broad and truncate, the hind trochanter with- 

 out spine, the surface glabrous. It is therefore allied to lugubris, Chihhi 

 and tenebrosa, from all of which it differs by the head, thorax and 

 femora being bright red and the elytra finely reticulate. 



The following modification of the table of the species of Group 2 has 

 been made necessary by the discovery of new forms. 

 Anterior tibiae of males with one spur ; hind trochanters subangulate. 



Elytra finely punctured, rather glossy, antennae stout gentilis. 



Elytra scabrous, subopaque, antennae slender moereiis. 



Anterior tibiae of males with two spurs. 



Outer spur of hind tibiae short, stout, broader and concave at tip -. 



Outer spur rather slender, laminate at tip 



2.— Elytra black. „„#.» 



J „ , , insperata. 



Elytra finely scabrous 



Elytra reticulate. lata 



Thorax subpentagonal, coarsely punctured ^"i," .!,»',' 



Thorax nearly smooth, sides not angulate eri»r»M*. 



Elytra fulvous or luteous. .„«« 



J , ,, , , ,, cardinally. 



Head and thorax black dichroa 



Head, thorax and elytra luteous 



3 -Antennae moniliform, scarcely longer than head and thorax., occipitalis. 



Antennae slender, usually as long or longer than half the body 4. 



4 -Stouter species, thorax as wide or wider than long . •■•-■•-• ' 



Slender species, thorax longer than wide and narrower than the head 6. 



5 —Body above, including head, of one color. 



Hind trochanters of male subangulate beneath n, CO ill mod a. 



, , , stygica. 



Hind trochanters oval <" m 



Body above bicolored. . 



Thorax and elytra dark bluish green ; occiput red auriCUlata. 



Head and thorax brilliant alucous, thorax yellowish red, with median 



. refnlgens. 



metallic-green spot * 



Head greenish black, thorax red, elytra olive green 1 roicmi. 



Head and thorax red, elytra very dark green 



6.-Color above reddish testaceous, elytra sometimes black... 



Color entirely black 



Bright aeneous, elytra slightly cupreous 



t eenliliS n. sp.-Black, rather shining, scarcely pubescent. Head sparsely 

 punctate. Thorax pentagonal, punctured at sides and base. Elytra rather shin- 

 ing, sparsely, finely punctured, a few coarser puncture, nitenu.xed. Metaster- 

 num densely punctured, abdomen more shining and sparsely punctured. Spurs 

 of hind tibiae very slender. Length .72-90 inch ; 18-23 mill.m. 

 , ^.-Anterior tibiae with one spur. Last ventral segment erescent.calh im- 

 pressed and triangularly emarginate. 



This is one of the largest species of the group and has a more shining- 

 surface. It recalls Epicauta corvina in form. 

 Occurs in New Mexico and Arizona. 



nitidicollis. 



lugciis. 



Katlivoni. 



