EURYGENIUS. 191 
Group PEDILIDES. 
So far as at present known, this group is represented in Central America by three 
genera—Lurygenius, Bactrocerus, and Macratria. Pedilus (= Corphyra, Lec.) is almost 
certain to be found eventually in Northern Mexico. 
EURYGENIUS. 
Eurygenius, La Ferté, Monogr. Anthic. p. 1 (1846); Lacordaire, Gen. Col. v. p. 578. 
Ichthydion (Haldeman), Dej. Cat. 3rd edit. p. 223. 
? Ictistygna, Pascoe, Journ. Ent. ii. p. 491 (1866) (apud Leconte, Proc. Ac. Phil. 1873, p. 335). 
Six species of Hurygenius have been described, five from North America and. one 
from Brazil, the genus ranging as far north as Vancouver. A large number of closely 
allied forms inhabit Australia. 
* Pubescence long and coarse, on the elytra forming spots; punctuation coarse ; 
anterior constriction of the thorax not well defined on the disc. 
1. Hurygenius mexicanus. (Tab. IX. figg. 1,2; 2, fifth ventral segment, ¢ .) 
Black or brownish-black, the elytra (the scutellar region excepted) and the front of the prothorax piceous- 
brown or dark castaneous, somewhat thickly clothed with long, greyish, coarse, decumbent pubescence, and 
with a few scattered semierect bristly hairs, the pubescence forming a median line on the prothorax and 
numerous spots on the elytra. Head densely, roughly, and irregularly punctured, obsoletely canaliculate 
behind ; eyes large and prominent, rather coarsely granulated, scarcely at all emarginate in front; antennz 
piceous or piceous-brown, slender, joint 3 much longer than 2, joints 3 and 4 subequal, 5-10 decreasing in 
length ‘but gradually increasing in width, 8-10 obconic, 11 a little longer than 10; prothorax moderately 
convex, about as long as broad, the sides broadly rounded at the middle, gradually converging behind, and 
constricted (but not abruptly) before the apex, the disc transversely depressed in front and canaliculate 
thence to the base, the base rather deeply grooved within on either side laterally, the sculpture consisting 
of closely packed, more or less confluent, very short, sinuous or curved raised lines, which are longitudinally 
or obliquely arranged (the surface appearing vermiculate), the apical portion with umbilicated punctures ; 
elytra impressed with exceedingly coarse, deep, oblong, closely placed punctures (which are here and there 
confluent) to about the middle, the punctuation thence to the apex abruptly becoming very much finer, 
shallower, and closer, the interstices more or less granular on the apical half; beneath very densely punc- 
tured and pubescent, the ventral segments 3-5 smooth in the middle behind in the male; legs coarsely 
and roughly punctured, thickly clothed with bristly whitish hairs, piceous, the base of the femora, the tibice 
in great part, and the basal joint of the tarsi more or less reddish. 
¢. Fifth ventral segment extended on either side posteriorly into a long and broad spoon-shaped lobe, the 
inner margin of which is densely fringed with hairs (fig. 2); the same segment in the female largely 
depressed in the middle behind. 
Length 6-104 millim. (¢ 9.) 
Hab. Mexico, Durango city, Chilpancingo and Iguala in Guerrero (Hége), Mescala 
in Guerrero, Puente de Ixtla in Morelos (H. H. Smith), Cordova (Sal/é). 
Eight examples. The peculiar sculpture of the elytra and other particulars separate 
E. mexicanus from all the N.-American species and from the Brazilian E. reichei, 
La Ferté. The pubescence is long and coarse, and decumbent, the upper surface 
also with scattered semierect bristly hairs. In the almost unemarginate eyes, form of 
§ 
