EDMENES. 99 



late. Thorax wide, a little depressed, that is, less high than wide ; 

 cribrose with thick punctures. Petiole pyriform, a little less 

 strongly punctured than the thorax, bordered by a salient rim 

 before which is a hollow space. Second segment covered with 

 quite fine and dense punctures ; flattened beneath, very convex, 

 and much dilated above, into a prominent boss of an almost 

 tubercular form ; behind this boss is a species of transverse 

 channel which forms a submarginal depression ; finally the border 

 is sensibly turned up in the middle. 



Insect black, very pilose, bristling with tawny or fulvous hair, 

 which is short and chatoyant on the abdomen. Antennas entirely 

 black; a spot ou the middle of the summit of clypeus, a point 

 on the face and two behind the eyes, one under the wings, post- 

 scutel and border of all the segments, yellow ; the border of the 

 last a little scalloped. The prothorax is also ornamented with a 

 narrow margin, twice interrupted or with three transverse spots, 

 yellow. Wing scales red. Legs black, tibia? and tarsi ferrugi- 

 nous. Wings transparent, sullied with brownish-ferruginous, or 

 yellow often passing into ferruginous. The spots of the head 

 and of the thorax are often wanting wholly or in part; the middle 

 only of the prothorax bordered with yellow. 



%. Hook of the antennas ferruginous. The remainder exactly 

 as with the female, but the clypeus covered with a silvery pile 

 among fresh specimens and marked at the summit with a large 

 yellow spot. 



Bess. a. cliff. — This species is very well characterized by the 

 singular deformity of the second abdominal segment, which has 

 no yellow lateral spots; by its red wing scales and by its very 

 velvety appearance (even the scape of the antennas is quite brist- 

 ling with hair in fresh specimens), by its black clypeus, spotted 

 with yellow in both sexes, which is different in most other species 

 (among which the clypeus of the male only is yellow). Compare 

 E. olmecus. 



Hab. The temperate regions of Mexico. I have taken it in 

 the Michoacan and in the deep baranca of Meztitlan. One 

 specimen, 9, having the clypeus entirely black, was taken in 

 Mechoacan, near Tuxpan. (Temperate region.) 



Observation. — One peculiarity is worthy of remark in this 

 species, that, contrary to the habitual rule, the male is stouter 

 than the female. 



