128 RHYNCHOPHORA. 
DORYTOMUS. 
Dorytomus, Stephens, Illustr. Brit. Ent., Mand. iv. p. 82 (1831) (nec C. R. Sahlberg, 1828); 
Leconte, Proc. Am. Phil. Soc. xv. p. 164; Casey, Journ. New York Acad. Sci. vi. p. 860. 
Eieophilus, Bedel, Faune Col. Bassin Seine, vi. p. 280, nota (1887). 
A Holarctic genus, just reaching the northern frontier of Mexico*, the species of 
which are mostly attached to sallows and poplars. The name Dorytomus has been 
variously applied by different authors. 
1. Dorytomus brevisetosus. 
Dorytomus brevisetosus, Casey, Journ. New York Acad. Sci. vi. p. 865°. 
Hab. Nortn America, Arizona !}.—Mexico, Northern Sonora (Morrison). 
This is one of the three North American species with greatly elongated anterior legs 
in the male. 
2. Dorytomus ——? 
Hab. ? Mexico (Sallé). 
One specimen, without definite locality, apparently female, not in sufficiently perfect 
condition for description. This insect is of the same size as D. brevisetosus, but is 
without the short sete on the elytra; it is obscure ferruginous in colour, with the disc 
of the prothorax and some irregular longitudinal streaks on the elytra black. 
GRASIDIUS, gen. nov. 
Kostrum slender, curved, a little widened at the base and apex, longer than the head and prothorax united ; 
scrobes lateral, descending to the lower anterior margin of the eyes; antenne inserted a little before the 
middle of the rostrum, slender, the funiculus 7-jointed, the club ovate, annulate, and pubescent ; eyes 
large, not prominent, transverse-oval ; head sunk into the prothorax up to the eyes; prothorax convex, 
without ocular lobes; scutellum minute ; elytra oblong-ovate, a little wider than the prothorax, finely 
punctate-striate, covering the pygidium; prosternum moderately developed in front of the anterior coxe, 
level, unemarginate in front; anterior coxe contiguous; ventral segments 3 and 4 shorter than 2 or 5, 
the sutures straight ; legs slender and moderately long, the anterior pair much longer than the others ; 
femora slightly incrassate, unarmed ; tibiw straight, truncate and unarmed at the apex ; tarsi pubescent 
beneath, joint 3 dilated and bilobed, 4 as long as the others united, the claws well developed, divergent, 
and simple; body elongate; vestiture consisting of appressed pubescence and semierect seta. 
The small species from which the above characters are taken has much the facies of 
the European genus Thryogenes, Bedel (type 7. festucw, Herbst), differing from it in 
the straight unarmed tibie, the transverse eyes, the setigerous vestiture (recalling that 
of Orthochetes and Pseudostyphius), &c. It can be included in the Erirrhinides for 
the present. 
* Capt. Casey states (op. cit. p. 361) that the genus is probably represented throughout the elevated central 
region of Mexico, but this does not prove to be the case. 
