STRONGYLIUM. 301 
S. viridipes, but cannot be satisfactorily compared therewith; it will be readily identi- 
fied from our figure. 
S. exaratum inhabits the humid virgin forest-region of the Guatemalan Atlantic 
slope. 
Elytra a little raised towards the base, finely striate-punctate, subfoveolately so in their 
anterior half towards the sides, with a depression below the scutellum and two 
transverse impressions on the disc, the humert prominent ; eyes rather large ; upper 
surface very shining, bright greenish-eneous. 
17. Strongylium fossifrons, (Tab. XV. fig. 8, ¢.) 
Strongylium fossifrons, Mikl. Monogr. p. 177; Act. Soc. Fenn. viii. part 1, p. 285°. 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion).—Cotomsia (coll. Mot- 
schulsky 1). 
Numerous examples of a Strongylium collected by myself in Chiriqui agree fairly well 
with the description of S. fossifrons; our specimens appear, however, to have the 
thorax more sparingly punctured, and to be rather smaller in size, viz. 10$-12 millim. 
in length (Maklin gives 133 millim.); these examples have only the base of the 
femora red. 
Of the species here enumerated S. fossifrons can only be satisfactorily compared with 
S. exaratum, from which its smaller size, narrower shape, more brilliantly metallic 
surface, short head and thorax, more convex and transverse eyes, and other characters 
readily separate it; the elytra have two transverse depressions across the disc, and the 
sutural region also depressed, as in that species, but are more convex at the base; the 
thorax has two deep transverse impressions on each side of the disc, and the basal fovez 
very deeply impressed. 
Elytra exceedingly coarsely and irregularly foveolate-striate throughout, a little flat- 
tened on the disc, widest at the base, the humeri prominent ; eyes small or mode- 
rate; upper surface bright greenish-eneous, with a more or less cupreous tinge. 
18. Strongylium chiriquense. 
Moderately elongate, slightly convex, bright greenish-eneous. Head exceedingly coarsely and rugosely punc- 
tured, shallowly longitudinally impressed between the eyes, the latter small, feebly convex, and widely 
separated ; antenne rather slender, widening outwardly, joints 3 and 4 long, subequal, 7 much wider than 
6, triangular, 8 the length of 7, about as broad as long (9-11 missing), 1-6 and the base of 7 more or less 
testaceous slightly stained with zneous, 8 and the outer half of 7 dark dull cyaneous; prothorax broad, 
strongly transverse, moderately convex, the sides immarginate, somewhat strongly rounded, narrowing in 
front, and armed in the middle with a very short indistinct tooth, the base and apex nearly straight, both 
very strongly margined, the anterior angles obtuse, the posterior angles subacute, the disc canaliculate and 
with a very large and rather deep rounded excavation on each side just above the deep basal foveze, the 
surface very uneven and exceedingly coarsely and somewhat sparingly punctured, the punctures more 
