HETEROMERA. 555 
Tarpela depressa (p. 306). 
This species, described from a single obscurely-coloured (male) example in M. René 
Oberthiir’s collection, has been sent in abundance by Mr. Gaumer from Temax in North 
Yucatan. It varies greatly in colour—metallic green, bluish-green, or neous, or 
brownish piceous with an eneous lustre; the legs, oral organs, and antenne are more 
or less ferruginous. 
32 (a). Tarpela nigerrima. 
Q. Elongate, subparallel, slightly depressed, pitchy-black, very shining, glabrous. Head somewhat thickly, 
finely punctate ; antenne pitchy-black, moderately elongate ; prothorax about one-half broader than long, 
bisinuate at the base and feebly emarginate at the apex, the sides somewhat expanded and sharply mar- 
gined, feebly sinuate behind, and moderately rounded and converging in front, the anterior angles rounded 
and not prominent, the hind angles obtusely rectangular, the basal foveee small but distinct, the surface 
punctured like that of the head; elytra wider than, and nearly four times as long as, the pro- 
thorax, subparallel to beyond the middle, deeply striate, the strie with series of fine, closely placed 
punctures, which (like the striz) become finer towards the suture, the interstices strongly convex towards 
the sides and apex, feebly so towards the suture, with widely scattered exceedingly minute punctures, the 
humeri rounded; beneath piceous, shining, very minutely, exceedingly sparsely punctate, the venter a 
little more closely punctured, the flanks of the prothorax finely strigose; prosternum narrow, declivous 
and acuminately produced behind ; legs piceous, the tarsi paler ; body winged. 
Length 72, breadth 3 millim. 
Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith). 
One specimen. Closely allied to 7. depressa, from Yucatan, but differing from it in 
the upper surface, legs, and antenne being pitchy-black ; the head and thorax uniformly 
punctured, the thorax less deeply emarginate in front and relatively narrower; the 
elytral strie shallower towards the suture, the inner interstices less convex ; the pro- 
sternum declivous and less produced behind; and the flanks of the thorax finely 
strigose. 
32 (s). Tarpela guerreroensis. 
Moderately elongate, subparallel in the male, oblong-ovate in the female, dull blackish-bronze, glabrous. Head 
thickly, moderately finely punctate, the punctures oblong in shape; antenne piceous, extending to the 
middle of the elytra in the male, shorter in the female ; prothorax about one-half broader than long, a 
little wider at the base than at the apex, convex, with the sides flattened and expanded, the base very 
feebly bisinuate, the apex (viewed from above) truncate, the sides moderately rounded anteriorly and 
sinuate behind, the anterior angles rounded, the hind angles subrectangular, the lateral margins narrowly 
reflexed, the surface rather more closely and finely punctured than that of the head, the punctures oblong 
in shape, the basal fover obsolete ; elytra wider than, and more than three times as long as, the pro- 
thorax, more parallel in the male than in the female, very feebly transversely depressed below the base, 
finely striate, the striae with series of oblong, rather closely placed impressions, which become finer towards 
the suture and a little coarser and deeper towards the sides, those in the marginal stria exceedingly coarse 
and deep, the interstices flat or feebly convex, smooth, the humeri obtuse; beneath piceous, shining, the 
metasternum thickly and somewhat coarsely, the ventral segments more finely (the fourth and fifth very 
minutely), punctured, the flanks of the prothorax finely strigose; the first and second ventral segments 
broadly flattened, pubescent, and densely punctate in the middle in the male; prosternum abruptly 
decliyous behind; anterior tarsi with joints 1-3 moderately thickened in the male. 
Length 6-62 millim. (¢ 2.) 
