138 TRICHOPTERYGIDA. 
much produced. Scutellum rather large, triangular, closely asperate. Hlytra subquadrate, rather 
narrower and not longer than the head and thorax, widest at the shoulders, closely asperate throughout ; 
sides nearly straight ; apex broad, rounded, and pale, with the extreme edge white. Addomen considerably 
exserted, ferruginous, with the apex distinctly bidentate. Legs robust, bright yellow. Underparts 
castaneous, with the mouth and coxe bright yellow. 
Hab. Panama, Bugaba (Champion +). 
Differs from the allied species in its rufo-glaucous colour, softly sericeous appearance, 
pale slender antenna, and very close sculpture. 
Obs. The females of this species differ very much from the males in form: they are 
oblong, and their thorax is not dilated at the base, nor their elytra attenuated towards 
the apex. 
9. Trichopteryx atomaria. 
Dermestes atomarius, Degeer, Mém. Hist. Ins. iv. p. 218, t. 8. ff 16-20 (1774) ’*. 
Trichopteryx atomaria, Matth. Trich. Ilustr. p. 141, t. 27. f. 2°; Trans. Am. Ent. Soe. xi. p. 131°. 
Short and broad, very convex, pitchy black, shining, clothed with rather long fulvous hair; head large and 
rather prominent ; eyes moderate ; thorax large, dilated posteriorly, widest at the base, ornamented with 
small remote tubercles, with the interstices very shining and faintly reticulated, the basal margin deeply 
sinuated, the hinder angles much produced and broadly flavescent ; elytra short, much attenuated in the 
male, nearly quadrate in the female, rather deeply asperate, the apex broadly flavescent ; legs and antennz 
yellow. Long. corp. eal lin. =0°75-0°87 millim. 
Hab. Nortu America, United States °.—GuatTeMaLa, San Gerdnimo, Rio Naranjo 
(Champion).—Eurore ! ?. 
Specimens of this cosmopolitan insect were found by Mr. Champion in Guatemala. 
10. Trichopteryx vicina. 
Trichopteryx vicina, Matth. Cist. Ent. ii. p. 172 (1877) *; Trans. Am. Ent. Soc. xi. p. 188°. 
Oblong, moderately convex, deep black, sparingly clothed with short flavescent hair; head very large and 
broad; thorax large, convex, widest at the base, ornamented with small indistinct tubercles in distant 
rows, with the interstices shining and deeply reticulated, the basal margin nearly straight, with the angles 
produced and pale; elytra almost quadrate, with the sides parallel, rather narrower than the thorax, 
moderately asperate in remote rows, with the interstices reticulate, the apex broad, scarcely rounded ; legs 
bright yellow; antenne black. Long. corp. 7%; lin.-=0°75 millim. 
Hab. Norts America, British Columbia! *.—GuaTEMaLa, Quezaltenango 78U0 feet 
(Champion). 
This species is allied to the European 7’. picicornis, from which it differs in its larger 
size and diverse sculpture, especially of the thorax. 
11. Trichopteryx grandicollis. 
Trichopteryx grandicollis, Mannerh. Bull. Mosc. 1844, 1. p. 181°; Matth. Trich. Illustr. p. 135, 
t. 26. f.4°; Trans. Am. Ent. Soc. xi. p. 134°. 
Rather broad, very convex, brassy-black, thickly clothed with fulvous hair; head large and broad; thorax 
