452 . COLYDIIDA. 
ACOLOBICUS, gen. nov. 
Corpus ovatum, subtus planum, supra transversim convexum. Antenne debiles, decem-articulate ; clava 
magna, uniarticulata, articulo nono elongato. Sulci antennarii perfecti, extrorsum curvati. 
The obscure insect for which this genus is established comes nearer to Acolophus 
than to any other I am acquainted with, but the two are quite distinct by the structure 
of the antenne. Erichson’s definition of Cicones would lead one to suppose that 
Acolobicus might be very near it; but this is not the case, for Cicones has only 
imperfect oblique antennary grooves. 
In Acolobicus the eyes beneath are elongate, and the antennary groove extends the 
whole length of the inner margin of the eye, curving outwards behind it. All the 
coxee are approximate, and the anterior acetabula are open. The legs are short, with 
feeble tibiee and tarsi; the latter are 4-jointed, the basal three joints short and sub- 
equal, the suture between the first and second not so distinct as usual. 
1. Acolobicus obscurus, sp.n. (Tab. XIV. fig. 12.) 
Ovatus, parvus, subtiliter sculpturatus, opacus, fuscus; limbo, antennis pedibusque testaceis ; prothorace 
elytrisque subtilissime costatis. 
Long. 24 millim. 
Hab. Guatemata, Chiacam, Chacoj, San Gerdénimo, Torola (Champion); Panama, 
Volcan de Chiriqui 3000 to 4000 feet (Champion). 
Antenne small, yellow; first joint concealed ; the club rather large, solid, oval, the 
joint preceding it not transverse. ‘Thorax transverse; sides explanate ; front angles 
much produced ; the sculpture very obsolete; on each side the middle are two very fine 
elevated crenate lines, and outside these a third, more obscure line; the colour is fuscous, 
with the explanate margins yellow. Elytra dull, each with several very fine raised crenate 
cost, the broad intervals very finely biseriately crenate. Tibie and tarsi very slender. 
2. Acolobicus ——? 
Hab. Panama, Volcan de Chiriqui (Champion). 
A single specimen, in too bad a state of preservation for description ; but evidently 
distinct from A. obscurus. 
EUCICONES, gen. nov. 
Corpus ovatum, supra hispido-squamosum. Antenne decem-articulate ; clava uniarticulata. Sulci antennarii 
perfecti, extrorsum curvati, subocculti. Pedes breves, tibiis extrorsum hispidis. 
This genus is allied to Acolobicus, but differs in numerous points of detail, and more 
especially in the hispid tibie. The facies is that of Colodicus, from which Kucicones 
is distinguished by the undivided club of the antenna. Eucicones almost agrees with 
Frichson’s definition of Cicones, but that genus has the antennary grooves very 
different. 
