6 PHYTOPHAGA,—SUPPLEMENT. 
short but thick ridges which are separated by a transverse groove; mandibles long and slender; antenne 
black, the first joint fulvous; thorax distinctly transverse, slightly narrowed near the base, the anterior 
margin rather strongly produced in the middle, the anterior angles somewhat prominent, the surface 
irregularly but distinctly punctured, with more or less distinct pubescence at the sides, the usual 
longitudinal groove scarcely visible; scutellum transverse; elytra closely covered with long fulvous 
pubescence, testaceous or nearly black, rather opaque; femora fulvous, strongly widened ; tarsi fuscous. - 
Hab. Mexico, Capulalpam (Sal/é), Ventanas in Durango, Chilpancingo (Hoge). 
The head and elytra in this insect vary in colour from testaceous to black, with 
occasional intermediate shades. In the male the short depression which is to be seen 
within the shoulders of the elytra in the female is absent, and the femora are much 
more strongly developed. Occasionally the thorax is much more thickly pubescent 
at the sides (in most specimens this is probably rubbed off) ; and in one female example 
the elytra are densely covered with dark yellowish pubescence and the intrahumeral 
depression is bounded at the sides by two short coste. The antenne in the male are 
longer than in the female, but the joints are rather short and robust in both sexes 
and shining. 
11. Aulacoscelis grandis. (Tab. XXXV. fig. 1, ¢.) 
Broadly ovate, subdepressed, black; thorax with three basal depressions; elytra orange-coloured, finely 
pubescent. 
Q. The intermediate joints of the antenne flattened and widened. 
Length: ¢ 5, 2 7 lines. 
Head elongate, constricted behind the eyes, the latter prominent, and with the space in front of their inner 
margin longitudinally depressed, the centre raised, sparingly covered with whitish pubescence ; palpi 
black, the terminal joint elongate, ovate, and thickened; antenne in the male half the length of the 
body, all the joints, with the exception of the first and second, of nearly equal length, slightly flattened, 
black; thorax scarcely broader than long, the sides with a narrow flattened margin, slightly narrowed in 
front and nearly straight, the basal margin with a short longitudinal groove on each side, and a deeper 
and larger one of subtriangular shape in the middle, the disc impunctate, with some more or less distinct 
obsolete depressions and longitudinal stripes of white pubescence; scutellum broad, black; elytra 
flattened, widened towards the middle, opaque, of a bright orange colour, covered with fine fulvous 
pubescence; underside and legs black, the latter slender; claws simple. 
Hab. Mexico, Ventanas in Durango (Hége). 
Of this fine large species, a male and a female specimen were obtained by Herr 
Hoge during his second Mexican expedition. Although the typical characters of 
Aulacoscelis are here partly modified on account of the posteriorly constricted head 
(which somewhat resembles that of a species of the family Carabide), and the sculpture 
of the thorax differs from that of the other species, the main features of the genus are 
present ; and taking into account the somewhat doubtful position and transitory form 
of Aulacoscelis amongst the Phytophaga, it would not have been of any advantage to 
establish another genus for the present insect. 
The female of A. grandis is much larger than the male and has the intermediate 
joints of the antenne more distinctly widened; it also has a deeper longitudinal 
