BRACHYRRHYNCHUS. 103 
rather broad, dilated laterally into a stout tooth, which extends outwards to a little beyond the eyes; 
antenne stout, with stouter basal joint, joints 1-4 granulate, 2 and 4 subequal in length, 3 longer than 1, 
4 oblong-ovate. Pronotum feebly emarginate at the base, rather deeply emarginate at the apex, slightly 
sinuate at the sides, the latter crenulate ; the anterior portion dilated on each side laterally and anteriorly 
into a broadly rounded, raised lobe, the callosities each with indications of a short ridge in front; the 
posterior portion much wider, rounded at the sides anteriorly and subparallel behind. Scutellum trans- 
versely wrinkled. Corium obliquely truncated at the apex. Connexivum broad, rounded at the sides 
posteriorly in both sexes, with the apical angles of the sixth segment obtuse; the sixth segment in the 
female widely emarginate behind, leaving the first genital segment somewhat broadly exposed, the latter 
with two rounded lobes. Terminal genital segment of the male strongly transverse; the lobes of the 
first genital segment prominent and rather broad. Beneath rugose, dull; the venter somewhat convex, 
each segment with a small smooth spot in the middle. Legs stout, the femora and tibie granulate. 
Length 63-9, breadth 3-34 millim. (¢ 2.) 
Hab. Norta America, Nevada, Upper and Lower California ?,—? Mexico ! 2, 
The above description is taken from five specimens communicated by Prof. Uhler, 
one of these being figured on our Plate. The locality “ Mexico,” given by Say, requires 
confirmation, the insect perhaps not belonging to our fauna. The stout, rough antenne 
separates it from all the Central-American species except B. rugicornis, from which it - 
differs in the broader post-ocular portions of the head, the anteriorly emarginate 
pronotum, &c. The terminal genital segment of the male is very short, as in B. regu- 
laris, a species having much more slender antenne. ‘The corium is obliquely truncated 
at the apex, appearing slightly emarginate within. 
16. Brachyrrhynchus rugicornis, n. sp. (Tab. VI. figg. 7, 9 ; 7a, antenna.) 
Q. Oblong-ovate, moderately broad, piceo-ferruginous, the corium, the middle of the pronotum, and the sterna 
and scutellum in part, black, the antenne piceous ; the membrane fuscous, with an obscure luteous mark 
behind the apex of the corium, the nervures black; the upper surface granulate, the granules on the 
head and anterior half of the pronotum very coarse, the connexivum rugulose, and sparsely clothed with 
excessively short ochraceous hairs, the connexivum above and beneath here and there coated with a 
pallid ochraceous incrustation ; the legs and antenne indistinctly pubescent. Head (exclusive of the apical 
process) transverse ; the apical process stout, reaching to the middle of the first antennal joint, shortly 
bilobed at the tip; the spiniform antenniferous processes broad, acute, divergent ; the post-ocular portions 
short, armed laterally with a slender acute spine, which projects outwards as far as the eyes; antenne 
comparatively short, stout, with a very stout basal joint, joints 1-4 granulate, 2 and 4 equal in length, 
3 a little longer than 1, 4 oblong-ovate. Pronotum feebly emarginate at the base, and moderately sinuate 
at the sides, the latter crenulate; the anterior portion rounded and slightly dilated at the sides, the 
callosities each with indications of a short ridge; the posterior portion much broader, rounded at the 
sides anteriorly and subparallel behind. Scutellum with a distinct median ridge. Corium rounded at 
the tip. Connexivum moderately broad, rounded at the sides beyond the middle; the sixth segment 
rather deeply emarginate at the apex, leaving the first genital segment somewhat broadly exposed, the 
latter with two rounded lobes. Beneath rugose; the venter feebly convex, each segment with a smooth 
spot in the middle. . Legs stout, the femora and tibiae asperate. 
Length 82, breadth 33 millim, 
Hab. British Honpuras, Belize (Blancaneaus). 
One example. Very like B. emarginatus (Say); but differing from it in the much 
more coarsely granulate head and pronotum, the latter subtruncate in front and more 
deeply sinuate at the sides, the head less rounded at the base, with slender acute 
