308 RHYNCHOPHORA. 
98. Gerzeus dispositus, sp. n. 
Rhomboidal, narrow, rather convex, dull, black, the legs and tip of the rostrum obscure ferruginous ; sparsely 
clothed with narrow, whitish, setiform scales, which are regularly and uniseriately arranged down each 
elytral interstice; the vestiture of the under surface closer and pure white. Head closely punctate ; 
rostrum strongly arcuate, a little longer than the head and prothorax, slightly thickened towards the 
base, closely punctate, the antenne inserted at about the middle, the antennal club ovate. Prothorax 
transverse, arcuately narrowing from near the base, constricted in front, the basal median lobe short ; 
densely, finely punctate. Scutellum almost bare. Elytra triangular, the humeri rather prominent ; 
narrowly punctate-striate, the interstices alutaceous and uniscriate-punctate. Beneath densely punctate ; 
first ventral segment broadly excavate down the middle. Prosternum unimpressed behind the transverse 
subapical groove. Anterior coxe narrowly separated. Anterior and intermediate tibie strongly 
unguiculate, 
Length 23, breadth 1,4, millim. (<¢.) 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
One male. Near G. duponti, from which it differs in the sparser, uniformly whitish 
vestiture of the upper surface, the elytral interstices dull, alutaceous, and with a single 
line of setiform scales. The rhomboidal outline, more prominent humeri, whitish 
vestiture, and dull surface separate @. dispositus from G. teapanus. ‘The basal lobe of 
the prothorax is less produced than in G. picumnus, 
99. Gereeus mendax, sp. n. 
Elliptic, nigro-piceous or piceous, the antenne, legs, and tip of the rostrum more or less ferruginous; thickly 
clothed with pale ochraceous, lanceolate scales, the prothorax often with two vittz on the disc and the 
elytra with the suture and one or two faint stripes fulvous, the elytral vestiture arranged in two lines 
on each interstice, the first with one line only; the vestiture of the under surface close and uniformly 
whitish or yellowish-white. Rostrum a little longer than the head and prothorax, moderately stout, 
strongly arcuate, thickly punctate and subcarinate, the apical half smoother in the 9, the antenne 
inserted at (Q) or slightly beyond (¢) the middle. Prothorax transverse, arcuately narrowing from 
the base, densely punctate. Elytra subtriangular, finely striate, the interstices rugulosely punctate. 
Prosternum almost unimpressed behind the transverse subapical groove, unarmed in the g. Anterior 
and intermediate tibie sharply unguiculate in the ¢, feebly so in the 92. 
Length 2-24, breadth 1-14 millim. (d¢ 9.) 
Hab. Mexico (Truqui), Toxpam (Sallé), Jalapa (Hoge), Cordova (U.S. Nat. Mus.), 
Atoyac, Orizaba, Teapa (H. H. Smith); Guatema.a, Cerro Zunil, Zapote, Capetillo, 
Duefias, Guatemala city, Aceytuno, Chiacam (Champion), Trece Aguas (U.S. Nat. Mus.). 
Apparently a common insect in Mexico and Guatemala. This is one of various 
forms resembling G. lentiginosus, chiefly recognizable by the rather coarse vestiture, 
the prothorax and elytra often with evanescent darker stripes (but always without 
trace of a dark spot on the suture); the prosternum of the male unarmed; the 
anterior and intermediate tibie rather strongly unguiculate in both sexes*. The 
mandibles are short and slightly decussate at the tip. 
100. Gergeus pauxillus, sp. n. 
Elliptic, piceous, the anteune, tip of the rostrum, and legs ferruginous; somewhat thickly clothed with 
small, narrow, pale ochraceous scales, which are arranged in two or three rows down each elytral 
* Centrinus relucens, Kirsch, from Peru, is nearly related to G. mendawx, but has fine, glistening, hair-like 
vestiture. 
