TARPELA. 311 
Five examples, four males and one female, of an insect collected by myself at 
Capetillo are apparently referable to this species. No mention is made by Allard of 
the structure of the antenne, and the specimen described is presumably a female. The 
Guatemalan insect, however,. agrees so nearly with Allard’s description of TZ. cisteli- 
formis in its general characters, that I have little doubt it belongs to that species. 
I give a fresh description from Guatemalan specimens :— 
Oblong ovate, subparallel, depressed, bright metallic bronze, with slight greenish and cupreous tints. Head 
short, very deeply transversely impressed in front, rather coarsely and somewhat densely punctured ; 
antenne in the male moderately stout, very long, reaching to the middle of the elytra, the third joint 
nearly twice as long as the fourth, the ninth and tenth joints shorter than the eighth and equal, and the 
apical joint curved, and more than twice as long as the tenth, in the female shorter and more slender, and 
the apical joint not very much longer than the tenth, fusco-ferruginous or piceous ; prothorax short, strongly 
transverse, narrowly margined, the sides a little rounded about the middle, narrowing and feebly sinuate 
in front, and feebly sinuate and almost straight behind, the anterior angles rounded and not very 
prominent, the apex feebly emarginate (truncate when viewed from above), the hind angles subrectangular, 
the base feebly bisinuate, somewhat produced in the middle, the basal fovez distinctly impressed, the disc 
broadly transversely impressed before the base, the sides punctured like the head, the dise very much more 
sparingly and finely'so, a more or less distinct rounded impression on each side about the middle 
just within the lateral margin; elytra much wider than the prothorax, subparallel, long, a little 
constricted at the sides before the apex, the humeri rounded and a little prominent in front, with rows of 
fine, shallow, closely placed punctures, the punctures still finer and almost obsolete towards the apex, and 
coarser and more scattered and more elongate in form towards the sides, the apical margin impressed on each 
side within, the interstices quite flat and very minutely and sparingly punctured, the second and eighth 
carinate just before the apex, the suture and strie often tinted with cupreous; legs long and slender, 
sparingly punctured, dark bronze ; beneath shining, greenish-bronze, the ventral surface very finely and 
sparingly punctured and shallowly and irregularly wrinkled, and.similarly sculptured in both sexes ; 
metasternum long, smooth, the sides narrowly and more or less distinctly, and the side-pieces shallowly 
and somewhat coarsely, punctured; flanks of the prothorax coarsely and closely punctured ; prosternum 
almost smooth, very slightly declivous, convexly .and acuminately produced ; mesosternum moderately 
deeply excavate. 
Length 104-12 millim.; breadth 4-43 millim. (d 9 -) 
This distinct species bears a certain resemblance to the North-American Helops 
(Lamperos) micans, Fabr. ; it will be known by the long and curved apical joint of the 
antenne in the male (suggestive of the genus Statira), the short head and thorax, 
depressed form, and other characters noted above. ‘T. cisteliformis and the following 
species may possibly form the types of a new genus. 
41. Tarpela totonicapamensis. (Tab. XIII. fig. 19, 2.) 
Resembling 7’. cisteliformis, and differing as follows :—Narrower and more elongate; the head more finely, 
more sparingly, and more irregularly punctured, broadly transversely impressed in front, a U-shaped 
shallow impression between the eyes; the antenne more slender, the apical joint (in the female) one third 
longer than the tenth, piceous; the prothorax narrower, almost as broad in front as at the base, the sides 
more constricted and more strongly sinuate behind the middle, and a little rounded anteriorly, the anterior 
angles more deflexed and broadly rounded, the hind angles more prominent and directed outwards, the 
transverse depression on the disc behind very deeply impressed laterally, the surface much more finely 
and sparingly punctured; the elytra narrower, relatively very much longer, the punctures finer and 
shallower and not so closely placed, and still finer and almost obsolete beyond the middle, the interstices 
quite flat, impunctate, and the second carinate just before the apex, the apex impressed on each side 
