844 ; PHYTOPHAGA.—SUPPLEMENT. 
PACHYBRACHYS (p. 64, and Suppl. p. 138). 
Pachybrachys reticulatus (p. 73). 
To the localities given, add :—Panama (Boucard), David (Champion). 
Found in abundance by Mr. Champion at David. 
COLASPIS (p. 135, and Suppl. p. 220). 
8 (a). Colaspis chapuisi. 
Colaspis chapuisi, Jac. Stett. ent. Zeit. 1884, p. 127°. 
Hab. Mexico, Misantla (Flohr, in coll. Jacoby). 
One of the largest species of the genus; the specimen described is a female. 
HOPLACERUS. (To follow the genus Diphaulaca, p. 269.) 
Body elongate; head rather deeply inserted; eyes small; frontal tubercles and carina strongly developed ; 
antenne long and robust ; thorax transverse, the angles strongly produced outwards, the base with a 
transverse sulcus, bounded on either side by a longitudinal groove; elytra punctate-striate and costate ; 
legs robust, the posterior femora but moderately incrassate ; tibie very broadly triangularly dilated, 
distinctly channelled, the posterior pair mucronate; the first joint of the posterior tarsi strongly widened, 
not much longer than the second; claws appendiculate; prosternum narrow but distinct; the anterior 
coxal cavities open. . 
The single species for which this new genus is proposed is one of the most peculiar 
amongst the numerous tribe of Halticine; it has the angles of. the thorax acutely 
produced, the elytra deeply punctate-striate and costate, and the tibie very broadly 
dilated. 
1. Hoplacerus tibialis. (Tab. XLIII. fig. 21.) 
Pale fulvous, the antenn (the first joint excepted) black; thorax deeply and remotely punctured ; elytra 
deeply and closely punctate-striate, the interstices costate. 
Length 2 lines. 
Head impunctate, the frontal elevations strongly raised, the lower portion of the face rather concave, the 
clypeus in the shape of a narrow but strongly raised triangular ridge extending upwards between the 
point of insertion of the antenne; palpi slender; antenne about two-thirds the length of the body, 
black, the first joint pale fulvous, robust, the second one-half shorter, the third joint slightly longer than 
the fourth, the following joints nearly equal, the terminal one more elongate and pointed; thorax twice 
-as broad as long, strongly rounded at the sides, the anterior angles produced outwards into a long and 
acute tooth, the posterior angles also produced but to a less extent, the surface irregularly convex in 
places, deeply and remotely punctured, with a deep sulcus at the base, not extending to the sides; 
scutellum triangular, impunctate ; elytra parallel, scarcely wider at the base than the thorax, deeply and 
closely impressed with transversely-shaped punctures, the interstices strongly costate throughout ; 
epipleure broad, extending to the apex of the elytra; underside sparsely pubescent; the posterior 
femora only a little more thickened than the others ; the four anterior tibie broadly triangularly dilated, 
their edges acute; the first joint of the posterior tarsi nearly circular, broadly widened. 
Hab. Mexico, Ventanas in Durango (Hége). 
A single specimen, apparently of the male sex. 
