GERAUS. 275 
long, conical, feebly constricted in front ; densely, finely punctate, with indications of a smooth median 
line. Scutellum almost bare. Elytra triangular, finely punctate-striate, the interstices densely punctate. 
Beneath densely punctate. 
3. Prosternum armed with two moderately long compressed spines (reduced to two triangular prominences 
in one specimen from Capetillo and in another from San Andres Tuxtla); anterior tibie narrow, 
strongly unguiculate, sinuous and clothed with a few very long hairs within, the anterior femora also 
hairy beneath. 
Length 41-44, breadth 2,1,-22 millim. (¢ 2.) 
Hab. Mexico, San Andres Tuxtla, Juquila (Sallé), Jalapa (Hoge); GuaTEMALa, near 
the city (Salvin), Capetillo (Champion), Coban (Conradt). 
Five males and nine females. Distinguishable from G. hirtipes and allied forms 
with bispinose prosternum in the male by the dense vestiture, above and beneath. 
The anterior tibie of the male are narrow, sinuous within, and clothed with long hairs. 
28. Gereus triplaris, sp. n. 
Broad, rhomboidal, shining, black, the antenne and tarsi piceous ; above (the base of the rostrum included) 
closely, uniformly clothed with narrow, hair-like, white scales, those on the elytra setiform and arranged 
in about three rows along each interstice, the scales on the under surface larger and also white, the tibic 
set with short brown hairs at the apex. Head closely punctate, transversely depressed between the eyes ; 
rostrum arcuate, longer than the head and prothorax, depressed at the base above, the short basal portion 
much thickened and rugosely punctate, the other portion bare, flattened, very sparsely punctate, 
and rather slender, the antenn# inserted at about the basal third, the antennal club ovate, stout. 
Prothorax broader than long, subconical, strongly constricted in front, the sides rounded anteriorly, 
the base deeply bisinuate; densely, finely, confluently punctate, and with an incomplete, smooth, 
raised median line. Scutellum narrow, triangular, smooth. Elytra subtriangular, narrowly punctate- 
striate, the interstices broad, flat, and densely asperato-punctate. Beneath densely punctate. Pro- 
sternum slightly depressed down the middle. Anterior cox rather narrowly separated. Legs 
comparatively stout; tibiae widened and strongly unguiculate at the apex; tarsal claws long and 
divergent. 
Length 53, breadth 33 millim. (2.) 
Hab. Mexico, Jalapa (fHége). 
One female in very fresh condition. A broad, rhomboidal form, with the white 
vestiture of the upper surface close, fine, and uniformly arranged; the scutellum 
narrow and glabrous; the rostrum greatly thickened and rugose at the base; the 
mandibles short. Larger, broader, and more robust than G. spiniger, the vestiture 
sparser, above and beneath, hair-like on the elytra, the antennal club larger, the 
rostrum longer, &c. The prosternum is doubtless bispinose in the male. 
29. Gerzeus sinuatipes, sp.n. (Tab. XV. fig. 11, anterior tibia, ¢.) 
Subrhomboidal, rather narrow, black or piceous, the tip of the rostrum ferruginous ; somewhat thickly clothed 
with narrow brownish-white scales, which are clustered into two or three lines down each elytral interstice 
(the first with one line only from about the basal third), the vestiture of the under surface closer and 
paler. Head finely punctate; rostrum arcuate, longer than the head and prothorax, stout, tapering 
towards the tip, closely punctate, the antenne inserted at a little beyond the middle, the antennal club 
ovate. Prothorax transverse, subconical, feebly constricted in front; densely punctate. Scutellum 
squamose. Elytra subtriangular, sharply punctate-striate, the interstices rugulosely punctate. Beneath 
densely punctate. Prosternum with a transverse depression in the subapical groove. 
2NN 2 
