GERZAUS. 287 
53. Gerzeus submaculatus, sp. n. (Tab. XV. figg. 25, 25a, 3.) 
Elliptic, rather convex, shining, black, the rostrum in great part, the antenne, and legs more or less 
ferruginous or reddish; rather sparsely clothed with narrow whitish and fuscous scales—the whitish 
scales on the prothorax condensed into a short streak along the middle at the base and a curved 
submarginal band, and those on the elytra into a triangular scutellar patch and a transverse patch on 
the disc a little beyond the middle,—which are transversely arranged on the prothorax and clustered 
into two rows along each elytral interstice ; the vestiture of the under surface closer and wholly whitish. 
_ Head finely punctate, transversely depressed between the eyes; mandibles more or less toothed at the 
base beneath; rostrum a little longer than the head and prothorax, abruptly curved downward from 
near the base, the basal portion closely punctate at the sides and much thickened, the other portion 
almost smooth, the antenne inserted at (¢) or slightly behind ( 2 ) the middle, the antennal club ovate. 
Prothorax transverse, rounded at the sides anteriorly, constricted and much narrowed in front; closely 
punctate, except along a narrow smooth median space. Elytra subtriangular; narrowly punctate- 
striate, the interstices somewhat roughly punctate. Beneath closely punctate. Tibize strongly unguiculate, 
$. Prosternum armed with two short, slender, porrect spines, and slightly depressed down the middle. 
Length 23-4, breadth 13-21, millim. (d 2.) 
Hab. Mexico, Temax in N. Yucatan (Gaumer); GuaTEMALA, San Gerénimo 
(Champion). 
Sent us in abundance from Yucatan. A pair only obtained in Guatemala. This 
species varies greatly in the colour of the vestiture of the upper surface, according to 
the predominance of the fuscous or the whitish scales on the elytra, but the markings 
are always visible. The legs are constantly reddish. The prosternal spines are short, 
slender, and porrect ; the rostrum is much thickened at the base; and the mandibles 
are hollowed on their lower outer edge. 
54. Gerseus furcifer, sp.n. (Tab. XV. fig. 26, ¢ .) 
Subrhomboidal, narrow, nigro-piceous, the antenne and legs fusco-ferruginous ; clothed with small, scattered, 
narrow, setiform, intermixed whitish and ochreous scales, those on the elytra arranged in a single series 
down each interstice; the vestiture of the under surface closer and wholly whitish. Head closely 
punctate, obsoletely foveate between the eyes ; rostrum strongly arcuate, about as long as the head and 
prothorax, moderately stout throughout, striato-punctate, smoother in the 9, the antenne inserted at a 
little beyond the middle in both sexes, the antennal club ovate. Prothorax short, gradually and 
arcuately narrowing from the base, constricted in front; densely, confluently punctate, and with indica- 
tions of a raised median line. Elytra subtriangular, shining, sharply punctate-striate, the interstices flat 
and irregularly uniseriate-punctate. Beneath closely punctate. Anterior coxe narrowly separated. 
3. Prosternum armed with two broad, flattened, bifurcate processes (the upper lobe long and arcuate, the 
lower one obtuse), and with a very deep excavation between them ; first ventral segment deeply excavate, 
and the fifth slightly depressed, in the middle ; anterior tibiz strongly unguiculate. 
Q. Prosternum simply sulcate. 
Length 23-3, breadth 11-13 millim. (¢ 2.) 
Hab. Guatemata, Calderas, on the slope of the Volcan de Fuego, 7000 feet 
(Champion). 
Two males and five females, all more or less abraded. The lamelliform, bifurcate 
prosternal processes readily distinguish G. furcifer from all its allies. A female from 
Guatemala city may also belong to it. 
