STRONGYLIUM. 365 
S. cruentatum in colour and general facies; but it is at once separated from both by 
the broad and comparatively very smooth head, the very widely separated eyes, the 
slender testaceous antenne, the long subcylindrical thorax, the grooved and slightly 
produced apices of the elytra, &c. 
41. Strongylium laterale. 
Strongylium laterale, Mikl. Monogr. p. 226; Act. Soc. Fenn. viii. part 1, p. 334°. 
Hab. Mexico (coll. Chevrolat+, coll. F. Bates), Tuxtla (Sallé). 
I have only seen two examples (a male and a female) that I can satisfactorily refer 
to this species: these specimens, however, are only 11-124 millim. in length, Maklin 
gives 16 millim.; both have the front of the vertex broadly and deeply excavate as 
described by Miaklin!. The antenne are slender in both sexes; in the male the 
anterior tibize are somewhat strongly sinuous and thickly clothed with silky hair 
within, and the inner side of all the femora and the metasternum in the middle 
densely pubescent. The smoother and deeply excavate head in both sexes, and the 
subquadrate and comparatively much smoother thorax readily distinguish S. laterale 
from S. varians. 
42. Strongylium nubeculosum. 
Strongylium nubeculosum, Makl. Monogr. p. 228; Act. Soc. Fenn. vii. part 1, p. 336 ‘ 
Hab. Mzxico, Yucatan (Deyrolle1); Nicaracua, Chontales (Belt). 
A male and a female example of a Strongyliwm collected by the late Mr. Belt at 
Chontales agree very nearly with Maklin’s description of S. nubeculosum. 
These specimens differ from S. crwentatwm in their more slender antenne and legs, 
duller and more coarsely punctured elytra, &c.; from S. laterale in the shallowly 
impressed vertex, and the duller elytra, the sutural patch on which is of a darker 
and fusco-violaceous tint and does not extend to the apex; and from S. varians in 
the smoother head and thorax, less elongate form, more quadrate and less transverse 
thorax, &c. The male and female scarcely differ in the shape of the elytra; in the 
female example the thorax is obsoletely margined towards the base ; in the male the 
fifth ventral segment is semicircularly depressed in the middle at the base (perhaps acci- 
dentally) and shallowly impressed in the middle behind. These specimens vary from 
12-124 millim. in length, Maklin gives 103 millim. 
43. Strongylium varians. (Tab. XV. fig. 21, ¢.) 
Very elongate, subcylindrical, metallic green or cyaneous, moderately shining. Head coarsely and usually 
very rugosely punctured, sometimes closely and coarsely so with the intraocular space smoother, at 
most shallowly longitudinally impressed (often nearly flat) between the eyes, the latter moderately 
large and widely separated; antenne long and slender in the male, shorter and rather stouter in the 
female, joints 3 and 4 long, subequal, the penultimate joints very much longer than broad in the male, 
