GERAUS. 291 
front; densely punctate. Elytra subtriangular, punctate-striate, the interstices closely asperato-punctate. 
Beneath densely punctate. Prosternum slightly depressed down the middle. Anterior tibie feebly 
unguiculate. 
Length 3, breadth 13 millim. (¢.) 
Hab. Panama, Bugaba (Champion). 
Two specimens. The greatly elongated, distinctly articulated antennal club (with 
long second joint), the short, closely-articulated funiculus, the broadly trivittate pro- 
thorax, and the albo-squamose scutellum and suture chiefly distinguish G. longiclava. 
This species and the following one are related to G. scutatus and G. aspersus. 
62. Gerseus tenuiclava, sp.n. (Tab. XV. figg. 34, 34a, 3.) 
Subrhomboidal, nigro-piceous or black, the legs, rostrum, and antenne fusco-ferruginous ; the prothorax with 
one or three lines of transversely-arranged, narrow, ochraceous or whitish scales, the median line 
extending on to the scutellum and sometimes reaching the middle of the suture, the third, fifth, and 
other interstices often with a short line of similar scales at the base, and the suture with a few others at 
the tip, the rest of the elytral interstices each with two lines of narrow blackish-brown scales; the 
vestiture of the under surface rather coarse, dense, and yellowish-white. Head finely punctate, foveate 
between the eyes ; rostrum arcuate, nearly as long as the elytra, striate and finely punctate, the antennz 
inserted at about the middle, the antennal club distinctly articulated and nearly as long as the funiculus, 
joints 3-7 of the latter transverse. Prothorax densely punctate. LElytra subtriangular, deeply striate, 
the interstices closely asperato-punctate. Prosternum slightly depressed down the middle, with a smooth 
transverse fovea in front, and the transverse subapical groove deeply impressed on each side behind the 
eyes. First ventral segment shallowly sulcate. Anterior tibie strongly unguiculate. 
Length 31-33, breadth 13-1, millim. (¢.) 
~ Hab. Guatemata, Cahabon, Chiacam, Sinanja (Champion), Coban (Conradt). 
Five males, all from Alta Vera Paz. The less elongate antennal club (with 
shorter second joint), the longer funiculus, the narrowly vittate prothorax, the trans- 
versely foveate prosternum, and the sharply unguiculate tibize separate @. tenuiclava 
from G. longiclava, which it otherwise closely resembles. In some specimens the 
scutellum and a median line on the prothorax are whitish, and the rest of the vestiture 
of the upper surface is blackish-brown. 
63. Gerzeus albiventris, sp. n. 
Oblong-subrhomboidal, black, the antennz and anterior tarsi sometimes ferruginous at the base; above 
sparsely clothed with small, narrow, whitish or yellowish-white scales, which on the elytra are arranged 
in a single or double row down each interstice, the median lobe of the prothorax and the scutellum 
sometimes with a patch of scales, the under surface densely clothed with larger pure white scales. 
Head closely punctate; rostrum arcuate, about as long as the head and prothorax, stout, coarsely 
punctate and finely carinate, much smoother in the 2, the antenne inserted at ( Q ) or a little beyond(d ) 
the middle, the antennal club stout and acuminate-ovate in the ¢, smaller and ovate in the 9. 
Prothorax transverse, more or less constricted in front, the sides slightly rounded from near the base ; 
rather coarsely, confluently punctate. Elytra subtriangular, separately rounded at the apex, leaving 
the apex of the last dorsal segment exposed; narrowly striate, the interstices asperato-punctate. 
Beneath densely punctate. Prosternum unimpressed behind the transverse subapical groove. Anterior 
tibiee feebly unguiculate, and joints 2 and 3 of the anterior tarsi more or less dilated, in the ¢. 
Length 32-4, breadth 13-2 millim. (3 2:) 
2PP2 
