12 HETEROMERA. 
10. Emmenastus parallelus. 
Winged, elongate oval, moderately convex, reddish brown or black, rather dull. Head closely and coarsely 
punctured ; prothorax transverse, not very convex, widest behind, a little narrowed in front, the anterior 
angles somewhat prominent and subacute, hind angles rectangular, closely, rather coarsely, and subequally 
punctured, the punctures a little confluent at the sides, the base feebly bisinuate; elytra scarcely wider 
than the thorax, the sides rather straight, with rows of fine punctures distinct to the apex, the interstices 
finely and sparingly punctured ; antenne and legs red; intercoxal process pointed in front. 
Length 7-73 millim. 
Hab. Mexico (coll. F. Bates). 
Two examples. Allied to EL. longulus, Lec., but more parallel, duller, the thorax 
relatively larger and broader and more evenly punctured; in one of these examples the 
sides of the thorax are a little less rounded in front, and the anterior angles more acute 
and prominent. 
11. Emmenastus intermedius. 
Winged, oblong ovate, very convex, black, shining. Head with the anterior margin closely, the vertex 
sparingly and coarsely punctured; prothorax strongly convex, moderately transverse, widest before the 
base, sides nearly straight just in front of the rectangular hind angles, but little narrowed behind, rounded 
and narrowed in front to the slightly acute angles, anterior margin sinuate and emarginate on each side 
within the angles and just behind the eyes, somewhat coarsely and confluently punctured at the sides, 
more finely and widely punctured in the middle, base bisinuate and with a feeble triangular impression on 
each side near the middle ; elytra convex, the width of the thorax at the base, with rows of fine punctures 
distinct to the apex, the interstices with scattered not very fine punctures, the rows of punctures not so 
regular or distinct towards the suture; legs and antenne red; mandibles strongly toothed above ; inter- 
coxal process pointed in front. 
Length 74 millim. 
Hab. Guatemata, Izabal (Sallé); Honpuras (Sal/é). 
Two examples. This species may be known by its comparatively long, convex, broad 
thorax, its generally convex form, and the somewhat coarse punctuation of the inter- 
stices of the elytra. 
12. Emmenastus tenebrosus. 
Winged, oblong ovate, convex, reddish brown or black, shining. Head closely and rather coarsely punctured ; 
prothorax convex, rounded at the sides, transverse, widest a little behind the middle, slightly narrowed 
behind to the obtuse subrectangular hind angles, narrowed in front and feebly sinuate before the rather 
prominent front angles, the base bisinuate, coarsely closely and regularly punctured, the punctures 
confluent at the sides, a small shallow rounded impression in the centre near the base; elytra scarcely 
wider than the thorax at the base, somewhat rounded at the sides, convex, with rows of not very coarse 
punctures distinct to the apex, the interstices somewhat coarsely and regularly punctured, the punctures 
in rows midway between the strie; legs and antenne reddish brown ; intercoxal process slightly rounded 
in front. 
Length 54-6} millim. 
Hab. Mexico, Guanajuato (Sal/é). 
Seven examples. In one or two of these specimens the sides of the thorax are a little 
more rounded towards the front and not feebly sinuate, and the anterior angles more 
