GERAUS. 293 
the middle, the antennal club large, short-ovate, the sutures very distinct. Prothorax transverse, 
narrow, conical, strongly constricted in front; densely, finely punctate, the narrow interspaces longitudinally 
raised. Elytra rather long, subtriangular, transversely depressed on the disc below the base ; finely and 
sharply punctate-striate, the interstices irregularly uniseriate-punctate. Beneath closely, finely punctate ; 
first ventral segment depressed down the middle. Prosternum unimpressed behind the deep transverse 
subapical groove. Anterior coxe narrowly separated. Legs rather long and slender, the tibie narrow 
and with the apical uncus slender. 
Length 22, breadth 14 millim. (<¢.) 
Hab. Mexico, Omilteme in Guerrero 8000 feet (H. H. Smith). 
One male. A small narrow form, with greenish-eneous elytra, a large, somewhat 
rounded antennal club, and slender ferruginous legs, the elytral vestiture fine and 
arranged in a single line (which is doubled here and there) along each interstice. 
66. Gerzeus scitus, sp.n. (G. scitulus, Tab. XVI. figg. 3, 3a, 2.) 
Oblong-rhomboidal, shining, eneous, the legs, antenn, and tip of the rostrum ferruginous ; somewhat thickly 
clothed with intermixed narrow ochreous and coarser white scales, which are arranged in about two 
rows down each elytral interstice ; the vestiture of the under surface wholly white, that of the legs fine 
and hair-like. Head finely punctate, transversely grooved between the eyes; rostrum strongly arcuate 
at the base, a little longer than the head and prothorax, moderately stout, flattened at the tip, sparsely, 
finely punctate, the antenne inserted behind the middle, the outer joints of the funiculus narrow and 
transverse, the club stout, short-ovate. Prothorax subconical, transverse, strongly constricted in front ; 
longitudinally wrinkled and finely punctate. Elytra subtriangular, rather long, depressed along the 
suture at the base; finely and sharply punctate-striate, the interstices sparsely punctate. Beneath 
closely punctate. Prosternum transversely excavate anteriorly. Legs rather long and slender ; tibiz 
feebly unguiculate. 
Length 34, breadth 12 millim. ( 2.) 
Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith). 
One specimen. Closely related to G. viridicans, and perhaps the female of that 
species, but differing from it in the coarser vestiture of the upper surface. The 
elytra with numerous intermixed larger white scales, the prothoracic ruge more 
conspicuous. ‘The mandibles are hollowed at the sides beneath. The sutures of the 
antennal club are conspicuous. 
67. Gerzeus orichalceus, sp. n. 
Rhomboidal, narrow, shining, eneous, the antenne in part, the apical half of the rostrum, and the legs 
ferruginous; above sparsely clothed with hair-like, ochreous scales, intermixed on the elytra with a few 
white ones, the elytral vestiture arranged in a single line down each interstice, that of the under surface 
closer and wholly white. Head finely punctate, transversely grooved between the eyes; rostrum 
strongly arcuate, moderately stout, considerably longer than the head and prothorax, finely punctate in 
its basal half, the antennee inserted at the middle, the antennal club ovate and rather large. Prothorax 
short, conical, constricted in front; finely punctate, the narrow interspaces longitudinally raised. 
Scutellum smooth. Elytra subtriangular, sharply striate, the interstices finely and irregularly uniseriate- 
punctate. Beneath densely punctate. Prosternum longitudinally sulcate anteriorly, narrowly raised 
between the coxew. Legs rather long and slender. 
Length 23, breadth 13 millim. (@ ?) 
Hab. Costa Rica, Irazu (Rogers). 
