APHRASTUS. 299 
APHRASTUS. 
Aphrastus, Schinherr, Gen. Cure. vii. 1, p. 39 (1848); Lacordaire, Gen. Col. vi. p. 209; Horn, 
Proc. Am. Phil. Soc. xv. p. 98. 
The two known species of this genus are from North America, and two others 
are now added from Mexico, these latter being less convex than A. teniatus and 
A. unicolor, and having the elytra parallel-sided anteriorly and the humeri more 
prominent. The chief characters of Aphrastus are as follows :— 
Rostrum broad, transversely-subquadrate, sulcate, the scrobes short, superior, the nasal plate limited behind 
by a v-shaped ridge; eyes very widely separated, not strictly lateral: elytra 10-striate, the outer striz 
coalescent from the basal third; posterior tibia narrowly laminate at the apex, the articular surface 
terminal, not cavernous ; tarsal claws connate ; body oblong or elongate, densely squamose, winged *. 
1. Aphrastus angularis, sp. n. (Tab. XIV. figg. 3, 3a, ¢.) 
Elongate, moderately convex, rather narrow, black or piceous; dense)y clothed with whitish, cinereous, or 
brownish-cinereons scales, the legs also set with short decumbent hairs. Head and rostrum slightly 
hollowed and finely canaliculate down the middle, the head somewhat exserted, the rostrum broader 
than long, the scrobes slightly converging posteriorly; antenne stout, short, about reaching the centre 
of the prothorax, the scape extending to the middle of the eyes, joint 2 of the funiculus shorter than 1, 
the club comparatively small; eyes large, moderately prominent. Prothorax cylindrical, as long as 
broad, flattened along the middle, feebly bisinuate at the base, obsoletely canaliculate and finely 
punctate. Scutellum oval. LElytra elongate, subparallel in their basal half, sinuate at the base, the 
humeri obliquely truncated laterally and angularly produced in front; conspicuously punctate-striate, 
the interstices feebly convex. Legs stout, short. 
Length 53-73, breadth 14-22 millim. (¢ ?.) 
Hab. Mexico (Mus. Brit.; coll. Solari, ex Jekel), Iguala in Guerrero (Hége), 
Mescala in Guerrero (H. H. Smith). 
Fifteen specimens, the two in the Solari collection labelled with misleading MS. 
specific names of Jekel + (one of them marked “‘ envoyé & Boheman”); the short series 
from Mescala in fresh condition. This species may be recognized by its exserted head, 
rather large eyes, short antenne, cylindrical prothorax, angularly, anteriorly projecting 
humeri (which are continued forwards beyond the hind angles of the prothorax), and 
uniform whitish or cinereous vestiture. ‘The short intermixed sete are almost wanting 
on the upper surface. 
%. Aphrastus submarginatus, sp.n. (Tab. XIV. fige. 4, 4a, ¢.) 
Moderately elongate, somewhat flattened above, narrow, piceous or ferruginous; variegated above with a 
dense clothing of cinereous and brown scales, the latter usually condensed into a median vitta on the 
prothorax and small indeterminate confluent spots on the elytra, the markings sometimes almost 
obsolete, the scales on the under surface cinereous or whitish ; the surface also set with minute scattered 
* Horn in his Table of the Cyphina, group Aphrasti (¢. c. p. 87), states that the body is apterous ; but this 
must be due to an error of observation. 
t coarcticollis and impressicollis. 
29Q2 
