64 Journal New York Entomological Society. [Vol. xvi. 



the female; second joint very small ; third triangular, with the apex as wide as long ; 

 fourth joint distinctly longer than the third, but not wider ; fifth and following joints 

 similar to the fourth, gradually decreasing in width, the outer joints much narrower 

 than the basal joints especially in the male. Thorax with a deeply impressed line 

 near base, which extends to the middle of the disk ; apex with a rather indistinct 

 median carina ; sides somewhat coarsely punctured ; disk smooth ; surface sparsely 

 pubescent, with fine black hairs. Elytra with the usual costae and reticulate intervals, 

 the alternate costae only very feebly stronger than the others. Body beneath shining, 

 sparsely pubescent ; abdomen sparsely and finely punctate, the first three or four 

 ventral segments with a number of finely impressed transverse lines. Penultimate 

 ventral segment of the male arcuate-emarginate, last ventral narrow, elongate. Last 

 ventral of the female rounded at tip. Length 6-6.5 n:m - 



Huachuca Mts. , Arizona. 



A moderately large series shows that the color is constant, by 

 which it will be easily distinguished from the described North Amer- 

 ican and Mexican species, except carbonarius from Guatemala, which, 

 according to the very short description, has narrower and longer 

 elytra and an obsolete basal groove. 



Discodon bipunctatum, new species. 



Head black, finely punctate. Antennae black, joints elongate cylindrical. 

 Thorax as long as wide in the male, wider than long in the female ; apical margin 

 broadly rounded and continuous with the lateral margin ; hind angles obtuse, feebly 

 rounded ; basal transverse impression distinct, limited on each side some distance from 

 the hind angles by an indistinct fovea ; surface finely and sparsely punctate ; color 

 reddish or yellowish with a median black vitta of nearly equal width from base to 

 apex and a black spot near the lateral incision. Elytra black ; scabrous, more 

 roughly sculptured near apex than base ; costae not well defined. Underside, ex- 

 cept thorax, black. Length 10-12 mm. 



Male. — Antennae not quite reaching to apex of elytra. Prothorax at about 

 middle of lateral margin incised ; apical angle of the incisure rounded, basal angle 

 of the incisure obliterated by the lateral margin continuing from the incisure to the 

 basal angle of the prothorax in almost a straight line. Outer claw of front tarsi 

 broadly lobed at base ; outer claw of middle and hind tarsi cleft at tip ; inner claws, 

 as usual, simple. Penultimate ventral segment broadly, triangularly emarginate ; last 

 ventral, as usual, deeply divided. 



Female. — Antennae similar to the male but shorter. Prothorax wider than 

 long; lateral margin of about middle distinctly sinuate. Claws, as usual, simple. 

 Last ventral segment rounded at apex and feebly incised at middle. 



Huachuca Mts., Arizona. 



By description this is near Polemius regularis Fall, described from 

 a single female, which is said to have the sides of thorax parallel and 

 broadly arcuate and without lateral black spot. The form of thorax 

 is similar to Polemius planicollis Lee. 



