EXOPHTHALMUS. , 269 
mucronate and slightly divergent at the tip, and with a common transverse depression behind the 
scutellum, the humeri not very prominent, obliquely cut off in front; with twelve rows of coarse sub- 
approximate punctures, which are sometimes placed in rather deep stri, the interstices often transversely 
confluent or more rarely granulate. Tibi irregularly denticulate to the apex within and more or less 
distinctly sulcate externally, the anterior pair strongly unguiculate in both sexes. 
Length 74-174, breadth 22-6} millim. (¢ 2.) 
fab. GuateMataA; Nicaraaua; Cosra Rica; Panama.—CoLomB1s, Chocol. 
This is one of the commonest of the winged Otiorhynchids in the warmer parts of 
Central America, from Guatemala southward, and it is unnecessary to enumerate the 
precise localities where the insect has been captured. Five forms of it may be noted :— 
a. The scales clustered into large confluent patches towards the sides of the elytra, and sometimes into one 
or three vittz on the prothorax also (g @). [Fig. 12, ¢.] [jehelianus, White (part.).|—Guatemala to 
Colombia. 
f. The scales clustered into small patches over the whole of the elytral surface (2). [Fig. 18, 9 .]—Costa 
Rica, Panama. 
y. The scales clustered into one or three vitte on the prothorax, and a sutural, submarginal, and marginal 
stripe on the elytra, the rest of the upper surface almost bare (¢ @). [Fig. 15, 9 .|—Guatemala to 
Panama. 
é. The scales clustered into a faint submarginal vitta on each side of the prothorax and an interrupted 
submarginal stripe on the elytra(¢ 9). [Fig. 14, ¢.}/—-Guatemala to Panama. 
e. The larger scales almost wholly replaced by minute, scattered, hair-like, pallid scales; the prothorax closely 
granulate, the elytral interstices rugose, the swollen portion of the femora smooth, almost bare, and 
usually rufous, the tibiz more deeply sulcate.—Costa Rica, Panama. 
These varieties are connected by intermediate forms: y is represented by females 
only, and e by a long series from Chiriqui, so that the specimens are probably not all 
abraded. White did not observe the grooved tibie of the male of his P. yekelianus, 
though he referred it somewhat doubtfully to the same species, the type of which is 
correctly stated to be a female. ‘The tibial groove, it may be observed, is partly hidden 
by the scales, and it therefore appears deeper in the less densely squamose varieties. 
We figure four examples: a male of the typical form («) from Chontales; a female of 
the var. B from Chiriqui; a male of the var. 6 from Costa Rica; and a female of the 
var. y from Guatemala. 
34. Exophthalmus roralis. (Tab. XII. fig. 16, ¢.) 
Prepodes roralis, Boh. in Schénh. Gen. Cure. vi. 1, p. 856°. 
Hypsonotus chlorogaster, Chevy. in coll. Sallé’. 
Oblong, rather convex, narrow (¢ ), broad and subconical ( 2 ), black or piceous, shining ; mottled above with 
a rather dense clothing of small cinereous or pale brown scales (which are often condensed into two broad 
faint vitte on the prothorax and are wanting on various, smoother, bare, irregular spaces on the elytra) 
and also set with long, stiff, erect sete, the scales on the legs, apex of elytra, and under surface varying 
in colour from cinereous to green. Head and rostrum closely punctate, the rostrum longer than broad, 
depressed at the base, and with a smooth raised median line, which is followed and preceded by a rather 
deep fovea; antenne long, the scape reaching to the posterior margin of the eyes, the latter rounded 
and prominent. Prothorax a little broader than long, rounded at the sides, truncate at the base; rather 
coarsely, confluently punctate. LElytra subparallel at the base in d, broad and widened to the middle 
in 2; coarsely punctate-striate, the interstices almost flat. 
Length 7-101, breadth 23-43 milum. (d¢ ¢.) 
