EUSTYLUS. 293 
anteriorly, the short deep scrobes subparallel as seen from above, the head flattened between the eyes 
and abruptly convex behind them, the eyes rounded, moderately large, and very prominent; antennal 
scape very stout and setose, reaching the front of the prothorax, joint 2 of the funiculus much longer 
than 1. Prothorax longer than broad, cylindrical, narrowed and feebly constricted towards the apex, 
sparsely punctate. Scutellum prominent. Elytra subparallel in their basal half in ¢, broader and 
slightly widened posteriorly in @ , the humeri rather prominent ; coarsely punctate-striate, the alternate 
dorsal interstices costate, the ridge on the third swollen into a large oblong tubercle at the commencement 
of the apical declivity and a still broader tubercle below the base. Anterior femora unarmed. Anterior 
and intermediate tibiw strongly unguiculate. 
Length 64-8, breadth 21-3 millim. (¢ 2.) 
Hab. Mexico, Toxpam in Vera Cruz (Saidé). 
One pair. Recognizable by the two very large tubercles on each elytron—the one 
below the base broad and occupying the space between the third and fifth rows of 
punctures, the other oblong,—and the single dirty white oblique fascia on the disc. 
The scrobes are less convergent behind than in /. striatus. The eyes in both these 
insects have the appearance of being inserted at the base of the rostrum, owing to the 
head being abruptly convex behind them. 
5. Hustylus ruptus, sp.n. (Tab. XIII. fige. 24, 24a, ¢.) 
3. Elongate, rather convex, piceous; above densely clothed with brown, coppery-brown, or greyish scales, 
often with a few widely scattered metallic-green (or golden) scales intermixed, these latter predominating 
at the base of the femora and on the ventral surface; the surface also set with short, scattered, adpressed 
sete. Rostrum slightly longer than broad, widened forwards, with a smooth, anteriorly bifurcate, median 
carina extending forwards to the well-defined, horseshoe-shaped, declivous, sulcate, subapical space, the 
bare nasal plate concave and limited behind by a v-shaped ridge, the short scrobes converging posteriorly ; 
eyes large, rounded, prominent ; antennal scape moderately stout, reaching the front of the prothorax, 
joint 2 of the funiculus longer than 1. Prothorax cylindrical, a little longer than broad, slightly 
narrowed towards the apex, feebly bisinuate at the base; coarsely punctate. Scutellum rather large. 
Elytra elongate-triangular, at the base nearly twice as wide as the prothorax, the humeri very prominent; 
closely, rather coarsely punctate-striate, the alternate interstices 3, 5, and 7 interruptedly costate, the 
oblong elevation near the base of 3 tuberculiferm and very prominent, the outer strive free. Legs 
moderately stout ; anterior and intermediate tibie strongly unguiculate. 
Length 63-8, breadth 23-27 millim. 
Hab. Panama, Volcan de Chiriqui, Bugaba (Champion). 
Six examples, evidently all males*. The elongate-triangular elytra, with prominent 
humeri and interruptedly costate alternate interstices, the relatively narrow, cylindrical 
prothorax, and the anteriorly bifurcate median carina of the rostrum, are the chiet 
characters of E. ruptus. ‘The scales, too, are brown on the upper surface and metallic 
green beneath. ‘The elytra are broader at the base than in #. serguttatus. 
6. Eustylus grypsatus. (Tab. XIII. fig. 25, 3.) 
Phyllobius grypsatus, Boh. in Schinh. Gen. Cure. vii. 1, p. 27 *. 
Eustylus subsignatus, Chevr. in litt.’. 
Length 43-74, breadth 13-23 millim. (¢ @.) 
* The female of an allied viridi-squamose, non-tuberculate form from Savanillas de Pirris, Costa Rica, too 
worn to describe, has the elytra widened to the middle. 
