PACHYBRACHYS. 137 
1 (c). Pachybrachys semibrunneus. (Tab. XXXIX. fig. 1.) 
Black ; above obscure fulvous, finely pubescent ; thorax very closely and finely punctured, clothed with silvery 
pubescence; elytra similarly pubescent, and as closely but more strongly punctured, the interstices sub- 
rugose ; legs with yellow spots. 
Length 14 line. 
Head closely punctured, and clothed with silvery pubescence, blackish, a narrow stripe near the eyes, and some 
spots below the middle, obscure fulvous; antennz extending to beyond the middle of the elytra, black, the 
lower five joints more or less fulvous; thorax about twice as broad as long, scarcely narrowed in front, 
the sides rather strongly deflexed, the disc very closely and rather strongly punctured, clothed with 
comparatively long silvery hairs; scutellum black; elytra subcylindrical, more deeply and strongly 
punctured than the thorax, the interstices irregularly rugose, but with scarcely any traces of longitudinal 
coste, the surface obscure fulvous, and pubescent like the thorax, the shoulders with a black spot; 
pygidium black, with two yellow spots; underside black, clothed with long whitish hairs, the last 
abdominal segment with a yellow spot on each side; legs black, the femora with the base and an apical 
spot, and the base of the tibie, fulvous. 
Hab. Mexico, Durango city (Hége). 
Narrower and more cylindrical in shape than P. pubescens (Oliv.); the entire upper 
surface very obscure fulvous (in certain lights, however, some darker spots are visible 
on the elytra). A single specimen. 
Pachybrachys rubronotatus (p. 65). 
To the Mexican locality given, add :—Zacualtipan in Hidalgo (Hége). 
The single specimen, a female, obtained by Herr Hége does not differ much from the 
type, except in colour; the thorax is more transversely shaped and the red colour 
prevails along the entire anterior margin as well as at the sides, and the punctuation is 
rather stronger ; the elytra are entirely black, with the exception of the basal margin 
near the scutellum ; and the femora are only fulvous at their extreme base and have no 
apical spot. The close and deep punctuation of the elytra is interrupted here and there 
by longitudinal irregular raised coste as in the type. 
Pachybrachys varicolor (p. 65). 
To the locality Mexico, add:—Ciudad in Durango (Hége). 
Herr Hoge obtained ten specimens of this apparently rare and variable species. In 
most of these the black colour of the elytra predominates; but sometimes the elytra 
are flavous, the punctures only being black and arranged in close longitudinal rows ; 
the extreme apex is always flavous, and generally the two marginal interstices also. 
Specimens with yellow elytra frequently have the thorax spotted with that colour. 
Pachybrachys bajulus (p. 66). 
To the Mexican locality given, add :—-Ventanas in Durango, Acapulco (Hége), Amula 
in Guerrero, Orizaba (H. H. Smith); Guatemaa, San Joaquin in Vera Paz, Calderas 
(Champion). 
BIOL. CENTR.-AMER., Coleopt., Vol. VI. Pt. 1, Suppl., October 1889. t 
