538 RHYNCHOPHORA. 
(Underwood), Pozo Azul (Zeledon), Surubres, near San Mateo, Pacific slope (Biolley). 
—Conompia 9; Guiana, Cayenne 45°, Surinam ?; Braziu 5; "TRINIDAD 7 8, 
Sent us in abundance by Mr. Biolley from Costa Rica. A very variable insect, some 
of the extreme forms of which are not confined to the same locality. 
Five are represented in Central America :— 
a. Elytra with the vestiture very dense, fulvous, the lateral patches rufo-ferruginons, large, 
rounded internally, and bordered with yellowish-white, the base sometimes similarly 
coloured. (Fig. 23.) 
@. Elytra with the vestiture less dense, yellowish-cinereous, the lateral patches transverse and 
clothed with similarly-coloured scales. 
y. Similar, but with the lateral patches of the elytra narrower and more sparsely squamose, 
the vestiture ochreous or yellowish-cinereous. 
8. Elytra with the vestiture less dense, the lateral patches oblique, sometimes extending to the 
subapical callus. 
e. Similar, but with the elytra more or less variegated with cinereous. (Fig. 24.) 
DIPLOGRAMMUS. 
Diplogrammus, Chevrolat, Bull. Soc. Ent. Fr. 1875, p. ex; 1877, p. 180. 
Chevrolat referred six South-American species to this genus, which are mainly 
recognizable by their rhomboidal or ovate form, short rostrum, snort subconical 
prothorax, alternately costate elytral interstices, and peculiar coloration. ‘The Mexican 
insect now added is very differently marked from all of them, and it has the eyes 
rather coarsely facetted and the femora unarmed. ‘The ventral segments 2-4 are 
equal in length. 
1. Diplogrammus curvilineatus, sp.n. (Tab. XXVI. figg. 29, 25 a.) 
Ovate, black, the antenne obscure ferruginous; thickly clothed with fulvous or pale brownish scales, the 
prothorax with two faint, transverse, narrow, white bands, the anterior one extending downwards to 
the front coxe, the elytra with the following pure white markings—a short stripe on the second interstice 
at the base, a short oblique fascia on the outer part of the dise below this, a long curved stripe extending 
from the humeri along the lower margin for some distance and then running upwards to about the middle 
of the disc, and a curved oblique stripe near the apex, this latter extending narrowly forwards along the 
outer part of the third interstice. Head densely punctate, with a smooth sulcus running along the inner 
edge of each of the eyes in front, the eyes themselves rather prominent, coarsely facetted, and somewhat 
narrowly separated ; rostrum stout, curved, about as long as the head and prothorax, rugulosely punctate 
and subcarinate at the base, the apical half thickly, rather coarsely punctate, a little smoother in the 9 
the antenne inserted at the middle, joint 2 of the funiculus slightly shorter than 1, the club ovate, acumi- 
nate. Prothorax strongly transverse, rapidly narrowing from the base, which is deeply bisinuate, slightly 
constricted in front; densely punctate. Elytra wider than the prothorax, narrowing from near the 
base, the humeri rounded; seriate-punctate, the interstices densely rugulose, 3, 5, 7, and ¥ narrowly 
and 6 and 8 more feebly, costate, the suture also raised throughout. Beneath very densely, moderately 
coarsely punctate. Fifth ventral segment slightly depressed in the middle at the apex in the g. Legs 
rather short and stout, the femora unarmed. ° 
Length 7j-103, breadth 34-53 millim. (¢ 2.) 
