358 HETEROMERA. 
from Guatemala has the elytra sculptured as in Chiriqui specimens, but with the thorax 
much more finely punctured. The two examples from Mexico in the Sallé collection 
(one of which is erroneously labelled S. impressicolle, Makl.) are much smaller in 
size (12 millim.), but scarcely differ in other respects; one of these has the head and 
thorax greenish-zneous in tint. 
The single specimen from Panama in Mr. F. Bates’s collection resembles those from 
Chiriqui, but differs in having the elytra more coarsely and more uniformly striate- 
punctate, the punctures being very little finer at the apex; it doubtless represents a 
variety of the same species. 
An example from Chiriqui is figured. 
29, Strongylium belti. | 
Elongate, subcylindrical, greenish-szeneous or cyaneous, shining. Head coarsely and irregularly, but somewhat 
closely, punctured, shallowly longitudinally impressed between the eyes, the latter rather small and widely 
separated in both sexes; antenne in the male rather long and slender, reaching to about the first third of 
the elytra, in the female much shorter and stouter, joints 3 and 4 subequal, 5-10 differing very little in 
length or width (in the male very much longer than broad, and very little wider at the apex than at the 
base, in the female slightly longer than broad), black with the base more or less greenish-eneous (in one 
example dark ferruginous outwardly); prothorax transverse, convex, the sides immarginate, rounded, and 
narrowing anteriorly, and a little sinuous behind, the apex straight, the base slightly sinuate, both very 
strongly margined, the anterior angles obtuse, the hind angles rectangular, the basal foves very deep (in 
one example shallower), the disc very deeply transversely impressed and obsoletely canaliculate immediately 
before the base, the surface coarsely and deeply, but not very closely, punctured ; scutellum subtriangular, 
flat, smooth, greenish-ezneous or cyaneous; elytra moderately long, subparallel to beyond the middle, 
striate-punctate, the punctures fine, or rather coarse and crenate, and approximate, the interstices smooth, 
flat, or very feebly raised, and more convex towards the sides and apex, the surface entirely testaceous ; 
beneath glabrous, bright cyaneous, very sparingly and minutely punctured, the sides of the metasternum 
with scattered coarse impressions, the flanks of the prothorax very coarsely punctured ; legs comparatively 
rather short, sparingly but somewhat coarsely punctured, greenish-eneous or cyaneous, the tarsi piceous, 
the first joint of the posterior tarsi shorter (more distinctly so in the female) than the apical joint; the 
coxe and the inner edge of the femora (that of the posterior pair indistinctly) clothed with short hair, 
and the anterior tibize very slightly curved, in the male, the fifth ventral segment unimpressed in this sex. 
Length 103-11 millim.; breadth 3-33 millim. (d @-) 
Hab. Nicaraaua, Chontales (Belt, Janson). 
Two examples. This species can only be compared with S. gerstaeckeri, from which 
it differs in its smaller size, much narrower shape, the more coarsely punctured head 
and thorax, the rectangular (not acute and outwardly directed) hind angles of the 
thorax, &c. The femora have their inner edge more or less pubescent in the male, as 
in S. gerstaeckert. WS. belti varies considerably in the intensity of the punctuation of 
the upper surface; in the male example the elytra have the punctures much coarser, 
and the interstices a little convex, and the thorax more coarsely and more sparingly 
punctured ; S. gerstaeckeri varies in a similar manner. 
