300 HETEROMERA. 
I have only seen two examples of this distinct species, both of which are contained 
in Mr. F. Bates’s collection. 
Y 23. Tarpela azteca. 
Elongate ovate, subparallel, rather depressed, dark brownish-bronze, dull. Head rather short, very closely, 
coarsely, and subequally punctured, the epistoma limited behind by a rather deep groove; antenne rather 
short and stout, the third joint comparatively short, piceous; prothorax subquadrate, very little broader 
than long, narrowly margined, widest at the middle, the sides slightly narrowing and sinuate behind, 
and feebly rounded and about equally narrowed anteriorly, the apex rather shallowly emarginate, the 
anterior angles a little prominent, the base very feebly bisinuate (almost straight), the basal fovez shallow, 
the hind angles subrectangular, the disc slightly transversely flattened before the base, the entire surface 
closely and coarsely punctured, the punctures here and there obliquely or longitudinally confluent ; 
scutellum rather coarsely punctured; elytra long, subparallel to beyond the middle, considerably wider 
than the prothorax, a little flattened on the disc, the humeri broadly rounded and very slightly produced 
in front, with rows of rather coarse, closely placed, short longitudinal impressions, the impressions 
not becoming coarser outwardly, and rather finer towards the apex, the interstices finely and sparingly 
punctured, and slightly convex throughout, the third, fifth, and seventh rather more strongly raised and 
subcostate in their posterior half; tibize closely and roughly, the femora rather more sparingly, punctured ; 
beneath dark bronze, shining, slightly pubescent, coarsely and closely punctured, the ventral surface rather 
more finely so and also shallowly longitudinally wrinkled, the flanks of the prothorax coarsely but not 
very closely punctured, the ventral segments 1 and 2 in the male closely and finely punctured and pubes- 
cent along the middle; prosternum gradually declivous, convex behind; mesosternum feebly excavate ; 
epipleure much narrowed at the last ventral suture, thence very narrowly extended. 
Length 7-8 millim.; breadth 3-33 millim. (¢ ¢.) 
Hab. Mexico, Guanajuato (Sallé). 
Four examples. This insect somewhat resembles 7. atra and T. oblonga, but will be 
known from both by the shorter head; the coarsely and separately punctured (not 
confluently punctured or strigose) flanks of the prothorax; the differently formed 
prosternum (gradually declivous and convex behind); the slightly convex interstices, 
the third, fifth, and seventh of which are subcostate behind; its rather depressed form, 
and other characters. 
24. Tarpela subparailela. (Tab. XIII. fig. 7, ¢.) 
Elongate ovate, subparallel, rather depressed, dark brownish-bronze, rather dull. Head short, broad, very 
closely, coarsely, and subconfluently punctured, the epistoma rather smoother, truncate in front, and 
limited behind by a moderately deep groove; antenne long, rather stout, joints 9 and 10 feebly subtri- 
angular, the apical joint in the male scarcely longer than the tenth, clothed with scattered long hairs; 
prothorax subquadrate, very little broader than long, narrowly but comparatively rather strongly 
margined, the sides feebly sinuate, scarcely narrowing behind, and very slightly narrowed and rounding 
anteriorly, the apex feebly emarginate (almost straight when viewed from above), the anterior angles 
broadly rounded and not prominent and a little deflexed, the base almost straight, the basal fovese 
shallow, the hind angles subrectangular, the disc slightly transversely flattened before the base and with 
traces of a smooth central line, a shallow fovea on each side about the middle just within the lateral 
margin, the surface closely, somewhat coarsely, and very irregularly punctured, the punctures here and 
there confluent, the sides and base much more sparingly punctured than the disc; scutellum broad, 
transverse ; elytra long, subparallel, a little depressed on the disc, strongly margined, the humeri rounded 
externally and very distinctly produced and grooved within in front, with rows of rather coarse, some- 
what distantly placed, short longitudinal impressions, the impressions becoming much coarser outwardly, 
