490 . SUPPLEMENT. 
53 (a). Gereeus puerulus, sp.n. (Tab. XXIII. figg. 19, 2; 20, ¢.) 
Oblong-subrhomboidal, narrow, shining, black, the apex of the rostrum, the antenne, and the legs often, in 
part or wholly, ferruginous; somewhat thickly clothed with rather coarse, narrow, white scales, the 
elytra sometimes with a few brownish scales intermixed—those on the prothorax condensed into two 
short, curved, longitudinal lines on the disc at the base and a small patch on the median lobe, those on 
the elytra closely, biseriately placed along each interstice, and condensed into a faint scutellar patch and 
an indistinct oblique fascia on the disc beyond the middle. Head sparsely punctate, transversely 
‘depressed between the eyes; rostrum ( 3) strongly arcuate, much longer than the head and prothorax, 
slender, gradually thickened towards the base, the basal portion finely punctured, the rest almost smooth, 
(2) a little longer, flattened and somewhat dilated towards the tip. Prothorax transverse, gradually, 
arcuately narrowing from the base, constricted in front ; densely punctate, with indications of a smooth 
median line. Scutellum small, almost bare. Elytra considerably wider than the prothorax, sub- 
triangular ; narrowly punctate-striate, the interstices rugulosely punctate. Beneath densely punctate ; 
first ventral segment depressed down the middle in the ¢. Anterior coxe somewhat narrowly separated. 
Legs long and slender. 
3. Prosternum in fully developed examples slightly hollowed down the middle and armed with two very 
short, slender, erect, blunt spines, which are partly hidden by the vestiture. 
Length 23-3, breadth 11-14 millim. (¢ 9.) 
Hab. Mexico, Cuernavaca and Puente de Ixtla in Morelos (Wickham). 
Four males and four females, one of the former wanting the prosternal spines. 
A small, narrow form of G. submaculatus, with the vestiture almost wholly whitish, 
and condensed into similar markings on the prothorax and elytra. One of the two 
specimens of G. submaculatus from Guatemala is of the same size, but it is easily 
separated from the present insect by the more rounded sides of the prothorax and the 
large admixture of brown scales on the elytra. 
77 (a). Gergeus tonsus, sp.n. (Tab. XXIII. figg. 21, 21a, ¢.) 
Gereus sp. ?, antea, p. 298’. 
Oblong-rhomboidal, flattened above, black; thickly clothed with small cinereous scales—hair-like and 
transversely arranged on the prothorax, oblong and placed in two or three compact lines down each 
elytral interstice,—the vestiture coarser, denser, and whiter along the sides of the body beneath. Head 
finely punctate; rostrum (<¢) a little longer than the head and prothorax, arcuate, rather slender, 
thickened towards the base, closely punctate, ( Q ) flatter and much smoother from about the basal third, 
the antenne inserted near the middle in both sexes. Prothorax strongly transverse, rounded at the 
sides anteriorly, constricted in front; densely, finely, subconfluently punctate, with indications of 
a smooth raised median line. Scutellum small, almost bare. Elytra oblong-subtriangular, narrowly 
punctate-striate, the interstices densely, rugulosely punctate. Beneath densely punctate ; first ventral 
segment broadly excavate in the ¢. Anterior coxe separated by about their own width. Prosternum 
unimpressed, unarmed inthe ¢. Anterior tibive without visible uncus in either sex. 
Length 3j-43, breadth 13-21 millim. (d 2.) 
Hab. Mexico (Lruqui and Dupont, in Mus. Brit.), Guanajuato! (Sallé: ¢ 9), 
Mexico city ! and Hidalgo (Barrett, in U.S. Nat. Mus.: 3 2). 
Additional specimens of this insect have now come to hand, sufficient for a detailed 
description. 7. tonsus is a form of G. tonsilis, with the vestiture of the upper surface 
finer, the prothorax strongly transverse and more finely and more densely punctured, 
and the scales on the elytra less elongate and much smaller. 
