AULACOSCELIS. 8 
fine punctures here and there. The elytra are opaque, finely punctured towards the 
base only, the posterior portion being nearly impunctate; a longitudinal costa, 
abbreviated at each end, is to be seen near the middle of the disc, and a more distinct 
one extends from the shoulder to the suture; and there is also a trace of a third costa 
between the other two at the base (all the coste are, however, nearly obsolete in one 
male example) ; in the female insect these coste are much more strongly raised and 
acute. The male has the first joint of the anterior and intermediate tarsi strongly 
dilated. The antennz and the legs are entirely black in all the varieties. The elytra 
have a peculiar whitish or violaceous bloom, as in A. héget. Chapuis gave Guatemala as 
the locality for this species, but we have not received specimens of it from that country. 
4. Aulacoscelis tibialis. (Tab. XXXV. fig. 2.) 
Pale fulvous, the antenn (the first joint excepted), knees, tibiee, and tarsi black ; thorax impunctate ; elytra 
opaque, finely punctured. 
@. Elytra with two longitudinal coste, the inner one very short, the outer one strongly raised and extending 
below the middle. 
Length 5-5} lines. 
Head narrowed in front, impunctate, shining, depressed between the eyes; palpi black; antenne half the 
length of the body, black, the first joint fulvous, the joints somewhat triangularly shaped, the terminal 
ones more elongate and slender; thorax scarcely broader than long, the sides straight behind and 
slightly rounded in front, the posterior margin straight, the surface shining, with a round fovea at each 
side and a less distinct depression at the middle of the base in the male, the base with a short. 
longitudinal groove on each side, the disc impunctate; scutellum fulvous; elytra broadly ovate, opaque, 
extremely finely and closely punctured, almost smooth in the male, distinctly costate in the female (the 
outer costa commencing at the shoulder and extending to below the middle, the inner one only distinct 
at the base); the underside and the femora fulvous, the knees, tibia, and tarsi black. 
Hab. Guavemata, San Juan and Senahu in Vera Paz (Champion). 
Almost of the same size and shape as the male of A. grandis, but with the head and 
thorax more typical of the genus. The first joint of the intermediate tarsi in both sexes 
is widened and flattened. The thorax in the female is devoid of the depressions peculiar 
to the male, with the exception of the short longitudinal grooves at the base. Two 
specimens only were obtained. 
5. Aulacoscelis hogei. (Tab. XXXV. fig. 6.) 
Reddish-fulvous; antenne (the first joint excepted) black; thorax not visibly punctured; elytra elongate, 
very minutely punctate ; the knees, tibie, and tarsi black. 
©. Elytra with a strongly raised costa at the sides. 
Length 3-34 lines. 
Head with a few minute punctures ; the palpi piceous or black ; antenne black or with the first joint fulvous ; 
thorax subquadrate, the sides rounded at the middle, the base with a narrow transverse sulcation which 
is bounded at the sides by a deep and distinct longitudinal groove, the surface not visibly punctured, 
shining; elytra (¢ ) opaque and finely punctured, ( ) shining, more distinctly punctate, the sides with 
a strongly raised longitudinal costa extending to the suture, and a longitudinal depression within the 
shoulders. 
Hab. Norta America, Vancouver Island (coll. Jacoby).—Mexico, Jalapa, Oaxaca, 
Chilpancingo, Acapulco, Ventanas, Tapachula in Chiapas (Hoge), Tehuantepec (Sallé). 
b2 
