162 HETEROMERA. 
into a -long, broad, obtuse horn (as in S. hololeptoides); prothorax transverse, rounded at the sides, 
widest. about the middle, very slightly narrowing from the middle to the base, the base bisinuate, the 
anterior angles obtuse, the hind angles subrectangular, rather convex, the basal fovex deeply impressed, 
the disc shallowly impressed longitudinally in the basal half, the surface a little more sparingly and rather 
less coarsely punctured than the head; elytra long, subparallel, the width of the prothorax at the base, 
regularly punctate-striate, the interstices very feebly convex outwardly and finely and sparingly punctured ; 
epipleurz abruptly ending near the last ventral suture. 
Length 6 millim. (<¢.) 
Hab. GuateMAua, Capetillo (Champion). 
One example. Narrower and more convex than S. hololeptoides ; the thorax more 
closely and rather more coarsely punctured, the basal foveee deeper, the sides more 
distinctly margined ; the elytra narrower and more parallel, more narrowly margined, 
the interstices feebly convex outwardly. In the male the antennary orbits are formed 
as in S. hololeptoides, but the epistoma is only shallowly and broadly impressed trans- 
versely before the eyes (not deeply as in that species); the antenne are only of the 
length of, and formed much the same as (though less angular at their inner apices), those 
of the female of S. hololeptoides. 
3. Sitophagus dilatifrons. (Tab. VII. fig. 22, ¢.) 
‘Oblong ovate, moderately convex, dark reddish brown or black, slightly shining. Head in the male with the 
antennary orbits broadly extended anteriorly and foliaceous (deeply concave within, abruptly truncate in 
front, and divided in the middle by a broad and deep triangular emargination), almost smooth and shining 
with a large \/-shaped impression extending from the vertex forwards; in the female the orbits are 
slightly swollen, the epistoma broadly and shallowly impressed transversely behind, deeply impressed on 
each side before the eyes (thus appearing convex in the middle anteriorly), and truncate in front, the sur- 
face closely and rather coarsely punctured (the epistoma smoother); antenne but little longer in the 
male, the third joint long, the fourth to the tenth triangular and decreasing a little in length, the eleventh 
broad and bluntly rounded at the apex; prothorax transverse, rather convex, rounded at the sides, narrow- 
ing a little anteriorly in the female, broader and more convex anteriorly and more strongly rounded at the 
sides in the male, the hind angles subrectangular, the base bisinuate, the basal fovex shallow, the surface 
closely and comparatively coarsely punctured ; elytra the width of the prothorax at the base, regularly 
and deeply punctate-striate, the interstices very distinctly and not very finely punctured; femora and 
tibie finely asperate ; epipleure abruptly ending near the last ventral suture. . 
Length 6-7 millim. (¢ 2.) 
Hab. GuatTemaLa, El Tumbador, El Reposo, Pantaleon (Champion). 
Four examples. Comparatively shorter in form and duller than 8. Suliginosus ; the 
male to be known at once by the characters given above. In this species the femora 
and tibiz are not so smooth as in 8. hololeptoides and S. fuliginosus, and the outer 
edges of the latter appear to be very finely serrate. 
4. Sitophagus (?) cynezoides. (lab. VIII. tig. 2.) 
Oblong ovate, moderately convex, subparallel; dull ferruginous, the front of the head, the disc of the prothorax, 
the,suture, and the reflexed margins of the elytra rufous; antenne about reaching to the base of the pro- 
thorax, widening gradually, the second joint very short, the ninth and tenth joints subtransyverse ; head 
unarmed in both sexes, the epistoma emarginate in front, well defined posteriorly by a transverse 
impressed line, the intraocular space feebly swollen transversely, the antennary orbits slightly swollen, 
