162 PHYTOPHAGA.—SUPPLEMENT. 
C. sublevicollis is of a deep black general colour with a slight silky gloss. The head 
is finely punctured and has some small fulvous spots placed at the sides, at the middle, 
and within the ocular indentation ; the labrum and the antenne are entirely fulvous. 
The thorax at the sides has only a few fine punctures and an obscure tubercle ; the 
raised central portion is rounded and distinctly channelled at the top, bounded laterally 
by a very distinct ridge, and with the sides rather strongly reticulate but scarcely 
punctured. The elytra are sparingly punctured and have two strongly raised coste 
extending from the base to the middle, the coste being here joined and continued as a 
single ridge nearly to the apex and ending in a strongly raised tubercle; a third costa 
is placed close to the second one and extends from the middle to some distance from 
the apex, where it ends; the sides below the shoulders are furnished with a U-shaped 
ridge, which is again connected by a straight costa with a similar curved ridge near the 
apex, the latter being reversed in shape and joined to an elongate tubercle near the 
lateral margin. The pygidium has a central carina and is excavated in several places 
at the sides. The deep black and silky surface, the nearly smooth sides of the thorax, 
and the strongly raised elytral coste will assist in the recognition of C. sublevicolits. 
14 (c). Chlamys scabrosa. (Tab. XL. fig. 4.) 
Subelongate, parallel, obscure dark seneous, the labrum, the basal joints of the antennz, and the tarsi flavous ; 
thorax with the central elevation divided, the elevation reticulate above; elytra with indistinct longitudinal 
and more distinct transverse ridges, the apex with two conical tubercles. 
Length 13-12 line. 
Of rather elongate shape, very obscure dark cupreous or eneous, with a slight reddish tint ; head closely rugose, 
the rough portion divided by a narrow transverse smooth space ; antennz with the second and third joints 
very small, the fourth and following ones strongly transverse, the lower six joints fulvous, the rest fuscous ; 
thorax with a moderately raised central elevation which is divided into two parts at the top, each of these 
parts being blunt, divided again, and foveolate, and velvety-black in appearance (when seen in certain 
lights), the sides finely punctured, extremely minutely granulate, and with an obsolete tubercle placed at 
the base of the elevation on either side; scutellum strongly transverse, ending laterally in a rather distinct 
point; elytra minutely granulate, with three or four very indistinct longitudinal ridges, of which the first 
two near the suture are connected before and immediately below the middle by a transverse ridge (these 
transverse ridges extending nearly across the disc to the lateral margin), and a strongly raised conical 
tubercle at the suture near the apex and two less distinct tubercles nearer the sides, the interspaces more 
or less excavated and finely punctured; pygidium closely punctured, and excavated at the base and at the 
sides. 
Hab. Mexico, Chilpancingo in Guerrero, Zacualtipan in Hidalgo (Hoge). 
I cannot with certainty refer this insect to any species described by Lacordaire ; it is, 
no doubt, closely allied to C’. melancholica, C. affinis, &c. C. scabrosa, if looked at with 
the naked eye, is dull and nearly black—with a lens, its reddish or brownish-zneous 
colour becomes at once apparent; the longitudinal ridges of the elytra can only be 
distinguished when the insect is held in certain positions, and well-defined tubercles, 
except the one near the apex, are absent. 
