10 HETEROMERA. 
4. Emmenastus variabilis. 
Winged, oblong ovate, convex, reddish brown or black, shining. Head coarsely and closely punctured; pro- 
thorax transverse, convex, narrowed in front, rounded at the sides, sides nearly straight behind in front of 
the rectangular hind angles, front angles slightly acute, base strongly bisinuate, anterior margin feebly 
emarginate and sinuate on each side near the angles just behind the eyes, closely coarsely and almost 
equally punctured, the punctures a little finer and more scattered in the middle; elytra with rows of fine 
punctures distinct to the apex, the interstices finely and somewhat confusedly punctured ; legs and antenne 
red; mandibles toothed above; metasternum long. 
Length 7-83 millim. 
Hab. Mexico (coll. F. Bates), Tuxtla, Playa Vicente (Sal/é), Almolonga (Hdége), 
Presidio (Forrer) ; Honpuras (Sal/é). 
Labelled Hylocurus dermestoides in the Sallé collection. 
A common species in Mexico, and found by Hoge in plenty at Almolonga. Some 
individuals are more coarsely and closely punctured than others; one from Presidio has 
the rows of punctures on the elytra much finer. Apparently a variable species, it may 
be known from £. chiriquensis by its more evenly punctured thorax, and its finer and 
less regular rows of elytral punctures. : 
5. Emmenastus canaliculatus. (Tab. I. fig. 10.) 
Winged, oblong ovate, not very convex, reddish brown or black. Head rather coarsely and closely punctured ; 
prothorax comparatively short, transverse, not very convex, narrowing from the base to the front, widest at 
base, hind angles rectangular, front angles scarcely pointed and almost obtuse, base bisinuate, sides slightly 
rounded, closely and somewhat coarsely and evenly punctured, the punctures a little more scattered in the 
middle, with a short smooth impressed line in the middle at the base; elytra a little wider than the 
thorax at the base, with rows of fine punctures distinct to the apex, the interstices with finer scattered 
punctures, the punctures a little more distinct at the margins and at the apex; legs and antenne red. 
Beneath rather closely punctured. 
Length 8-9 millim. 
Hab. Mexico, Presidio (Forrer). 
Four examples. This species may be known from its allies by its less convex form, 
and its comparatively short (and feebly canaliculated) thorax. 
6. Emmenastus brevipennis. 
Winged, oblong ovate, rather broad, not very convex, black, shining. Head coarsely and closely punctured ; 
prothorax transverse, not very convex, widest just before the base, slightly rounded at the sides, but little 
narrowed behind, narrowed in front to the scarcely prominent obtuse angles, hind angles obtuse, base 
bisinuate, closely coarsely and almost equally punctured, the punctures a little confluent towards the 
sides; elytra a little wider than the thorax, not very convex, comparatively short, with rows of rather 
coarse punctures distinct to the apex, the interstices with scattered fine punctures; legs and antenne 
reddish brown; intercoxal process rounded in front. 
Length 7 millim. 
Hab. Mexico, San Blas (forrer). 
One example. ‘This species may be known from £. variabilis and allies by its shorter 
form. The elytra are comparatively very short. 
