PROXIUS. 69 
a. Head excavate behind the eyes; pronotum tricarinate anteriorly, the 
posterior lobe with a transverse sinuous ridge; scutellum with an oblique 
foliaceous plate on each sideofthe disc . . . . .... =. . . palliatus, n. sp. 
6. Head not excavate behind the eyes. 
a’, Pronotum with a bilobed prominence on the disc anteriorly, the posterior 
lobe usually with a transverse sinuous ridge ; scutellum with an inflated 
median elevation. . 2. 2. 2. 1 6 ee we we ee ew we personatus, n. sp. 
b'. Pronotum with a bifurcate prominence on the disc anteriorly, the poste- 
rior lobe with one or two short ridges on each side of the middle of 
the disc ; scutellum with a T-shaped elevation . eee 
c', Pronotum without a prominence on the disc anteriorly (? broken off), 
the posterior lobe with a straight transverse ridge on the disc and a 
similar ridge along the basal margin ; scutellum without an elevation (Brazil). | 
onthedise. . . 2. 1. 6 ee ee ee ee we we ee Ginerustatus, Stal 
gypsatus, Bergr. 
1. Proxius palliatus, n. sp. (Tab. V. figg. 5, ¢; 5a, antenna.) 
Fusco-ferruginous above, almost covered by a thick whitish or griseous incrustation, the under surface also in 
great part covered by a similar incrustation ; the legs and antenne ferruginous. Head with the post- 
ocular portions broadly, angularly dilated at the sides to far beyond the eyes, and concave externally ; the 
antenniferous processes spiniform and slightly divergent; the apical lobes moderately long ; the callosities 
forming a posteriorly widened median ridge and some short oblique ridges on each side ; antenne short, 
joint 1 rather stout, extending to some distance beyond the apical lobes of the head, 2 ovate, short, 
3 slender, filiform, twice as long as 2, 4 one-half longer than 2, pilose at the tip. Pronotum transversely 
quadrate, sinuate at the sides, with the angles of both lobes prominent ; the anterior lobe obliquely trun- 
cate on each side in front, concave at the sides, and nearly covered by raised callosities, these forming a 
' prominent median and two oblique ridges on the disc and some transverse or oblique ridges at the sides ; 
the posterior lobe with a prominent transverse bisinuate ridge on the disc, and with a laterally projecting 
raised margin along the outer part of the base. Scutellum with an oblique foliaceous ridge on each side 
of the disc, the two ridges meeting behind, and a callous lateral margin. Abdomen moderately long; the 
outer apical angles of. the connexival segments slightly projecting, becoming more prominent posteriorly, 
that of the sixth segment dentiform in the male and obtusely dentiform in the female; the genital lobes 
rather slender. 
Length 32, breadth 14 millim. (¢ 9.) 
Hab. Guatemata, Las Mercedes (Champion: 3); Panama, Bugaba (Champion: @ ). 
Two specimens. Differs from the other Central-American species of the genus in 
the strongly wrinkled callosities of the head and pronotum,:the pronotum (viewed 
laterally) appearing to have four deep excavations in front and the post-ocular portions 
of the head a deep cavity. - 
2. Proxius personatus, n. sp. (Tab. V. figg. 6, 7, 2.) 
Fusco-ferruginous, in great part covered by a thick whitish, whitish-ochreous, or griseous incrustation ; the 
legs and antenne ferrugineo-testaceous, the apical joint of the latter infuscate. Head with the post- 
ocular portions broadly, angularly dilated to far beyond the eyes; the antenniferous processes spiniform 
and slightly divergent; the apical lobes moderately long; the callosities forming a raised elongate- 
triangular plate on the middle of the head, outside which is a groove for the reception of the antenne ; 
antenne short, joint 1 stout, extending to the apex of the apical lobes of the head, 2 ovate, 3 slender, 
