STRONGYLIUM. 373 
Elytra much as in 8. impressicolle, &c., but more convex and more coarsely punctured, 
the alternate interstices subcostate : size small. 
+ Eyes small, distant. 
59. Strongylium gregarium. (Tab. XVI. fig. 12, 3.) 
Moderately elongate, rather convex, greenish-zneous, with a translucent brownish tinge, slightly shining. 
Head coarsely and closely punctured, impressed between the eyes, the latter rather small but convex and 
somewhat narrowly separated in both sexes; antennew rather stout, moderately long, widening outwardly, 
joints 3 and 4 about equal in length, the penultimate joints longer than broad, the apical joint rather large 
and ovate, piceous or dark reddish-brown; prothorax transverse, convex, the sides immarginate, slightly 
crenulate, rounded, narrowing a little in front, and about equally narrowing and sinuate behind, the base 
and apex nearly straight, the hind angles rectangular or subacute, the anterior angles obtuse, the disc 
deeply canaliculate in front and shallowly so behind, the basal foves shallow and ill-defined, the surface 
uneven and exceedingly coarsely and closely punctured, the punctures here and there confluent ; scutellum 
subtriangular, almost smooth ; elytra comparatively rather short, subparallel in their basal half, very 
coarsely and deeply striate-punctate, the punctures subtransverse or rounded and subapproximate, the 
interstices smooth and slightly raised, the alternate ones (especially the third) more distinctly so, the 
surface greenish-aneous, sometimes brownish ; beneath almost glabrous, moderately shining reddish-brown, 
much suffused with greenish-seneous towards the sides, finely and sparingly punctured, the metasternum 
in front much more coarsely so, the sides of the latter and the flanks of the prothorax very coarsely 
punctured ; legs moderately long, rather stout, sparingly but rather coarsely punctured, greenish-sneous, 
the tibize often reddish-brown, the tarsi piceous, the first joint of the posterior tarsi much shorter than the 
apical joint. 
Length 5-7 millim.; breadth 13-24 millim. (¢ 9.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
Found in abundance by myself on the slope of the Volcan de Chiriqui. SS. gregarium 
is separated from S. languidum, S. armatum, and their allies by the less elongate shape, 
the smaller eyes, the elytra shorter, with less approximate, deeper, and more rounded 
impressions, and the alternate interstices a little raised, the legs smoother, and the 
ventral surface much more finely punctured. From 8S. permodicum and S. punctipes 
it is distinguished by the less widely separated eyes in both sexes; the shorter and more 
closely (but equally coarsely) punctured thorax; the very much narrower and less 
raised alternate interstices of the elytra, the sutural space narrow, the punctures 
coarser, more rounded, and less approximate ; and also by the shorter and more convex 
general form and the greenish-eneous surface. 
+} Eyes larger, more approximate. 
60. Strongylium erraticum. 
Resembling S. permodicum, Mikl., and differing as follows:—The head very unequally punctured, the anterior 
part very sparingly and rather finely, the hinder part very coarsely and rugosely so, the intraocular 
impression deeper, the eyes much larger and more approximate; the antenne (3) stouter, with joints 
7-9 subtriangular ; the prothorax more convex, rounded at the sides, about equally narrowing before and 
pehind, the surface still more coarsely, rather more closely, and more irregularly punctured ; the elytra 
more elongate, with the alternate interstices raised, but not distinctly broader than the others (much broader 
