344 HETEROMERA. 
S. immundum, appears to be the rarest (it was. described from a single, possibly 
discoloured example), and I have not seen anything exactly answering to the colour 
given, the specimen before me with darker elytra having the thorax black. 
I met with S. hépfneri in abundance at San Juan in Vera Paz; three of its varieties 
were collected together indiscriminately on charred stumps in a forest clearing. 
The localities for this species are all upon the Atlantic slope. 
We figure a typical example from Sinanja, and the variety pectorale from San Juan. 
3. Strongylium chontalense. (Tab. XIV. fig. 19, 2.) 
Oblong ovate, rather convex, reddish-testaceous, slightly tinged with fuscous, shining. Head rather coarsely 
but sparingly punctured, longitudinally impressed between the eyes, the latter feebly convex and somewhat 
widely separated; antenne ( @ ) rather short, rapidly widening outwardly, joints 3 and 4 moderately long, 
subequal, 5-7 nearly equal in length, and each much shorter than 4, 8 as broad as long, 9 and 10 
transverse, joints 1-4 testaceous at the base, blackish-sneous outwardly, the rest dull bluish-black ; 
prothorax rather convex, transverse, the sides immarginate, a little rounded, narrowing from the 
base, and with a small tubercular prominence in the middle, the base and apex nearly straight and 
strongly margined, the basal fovee moderately deep, the anterior angles rounded, the hind angles 
subrectangular, the surface with very widely scattered fine, but deep, punctures, the dise slightly 
transversely impressed before the base, the basal and apical margins stained with piceous; scutellum 
triangular, smooth, piceous; elytra short, convex, subparallel (though a little widening) to beyond 
the middle, very finely and lightly striate-punctate, obsoletely so towards the apex, the interstices 
perfectly smooth and flat, light yellowish-testaceous, each with a very large subovate fuscous or piceo- 
fuscous patch on the dise (the patch not reaching the sutural or lateral margins, and occupying more than 
half the length of each elytron), the suture narrowly and the epipleure piceous ; beneath shining, glabrous, 
almost smooth, the metasternal side-pieces and the flanks of the prothorax sparingly and rather coarsely 
punctured; legs comparatively short, moderately slender, sparingly punctured, blackish-eneous, the basal 
half of the femora (and in one example the inner sides of the tibize) reddish-testaceous ; tarsi rather short, 
the first joint of the posterior pair shorter than the apical one. 
Length 11 millim.; breadth 5 millim. ( 2.) 
Hab. Nicaraeua, Chontales (Belt, Janson). 
Two examples, apparently both females. This insect, except for the immarginate sides 
of the thorax, has much the facies of a Pecilesthus; it will easily be identified from 
our figure. 
B. Form oblong ovate; eyes small; upper surface dull black with a slight eneous tinge. 
Elytra abruptly transversely gibbous about the middle, with rows of oblong fovee. 
4. Strongylium gibbum. (Tab. XIV. figg. 20, 20a, ¢.) 
Strongylium gibbum, Makl. Monogr. p. 144; Act. Soc. Fenn. vii. part 1, p. 252°. 
Hab. Mexico (coll. Chevrolat1); Guatemata, San Juan in Vera Paz 2000 feet 
(Champion). 
A single male example collected by myself in Guatemala agrees so closely with 
Maklin’s description of S. gidbum, that I have little doubt it represents the same 
species. It differs in having longer and more slender antenne, and the sides of the 
