436 Mr.J.S. Baly on the Classification of the Eumolpide. 
The insects composing this very natural genus, although not very 
numerous in species, are scattered over a large extent of the Ame- 
rican continent ; the narrow parallel habit of Myochrous, as contrasted 
with the shorter, more convex, and posteriorly attenuated form of 
Dictyneis, will, without reference to structural characters (which also 
afford abundant points of difference), separate the two genera at first 
sight: from Glyptoscelis (with which genus it agrees more closely in 
form) it may be known by its appendiculated claws, toothed sides of 
thorax, and the squamose clothing of the elytra. 
Genus GuiyprosceLis, Leconte. 
Proc. Acad. Philad. 1859, p. 81. 
Winged. Body elongate, subcylindrical, metallic, covered with adpressed 
scale-like hairs. Head perpendicular, scarcely exserted, the forehead 
convex; antenne filiform, scarcely thickened towards the apex, longer 
than half the body, basal joint thickened, second shorter than the first, 
third and following joints each about equal in length to the first, four 
or five upper joints, slightly thickened ; eyes large, their inner edge 
broadly notched; apex of maxillary palpus ovate, obtuse. Thorax convex 
or transversely convex, disk forming a distinct angle with the lateral 
portions; side margin distinct, entire, unarmed. Scutellwm of moderate 
size, obtuse or truncate. -Elytra parallel, the apex of each usually pro- 
duced into an acute process, more rarely conjointly rounded, above 
subcylindrical, irregularly punctured. Legs moderately robust ; thighs 
simple, unarmed; ¢b¢e with their outer surface strongly grooved ; un- 
guiculr bifid, Prosternum separated from the anterior episternum by a 
deep groove. 
Type, Glyptoscelis eneipennis, Baly. Venezuela. 
The known species of Glyptoscelis, few in number, are natives of 
the southern portion of the United States and of Columbia. From 
Myochrous the genus is separated by the entire, unarmed sides of the 
thorax, as well as by the irregular puncturing of the elytra: from 
Pachnephorus it is divided by the unnotched hinder tibie, and by the 
form of the scale-like hairs clothing the upper surface of the body. 
Genus Pacunepnorts, Redt. 
Faun. Austr. i. p. 565. 569. 
Winged. Body elongate, subcylindrical, non- or faintly metallic, clothed 
with adpressed, bifid or emarginate scales*. Head inserted in the 
thorax, perpendicular ; front often swollen and convex; antenne sub- 
* The scales on the upper surface of Pachnephorus cylindricus, a common 
European species, are very minute, and apparently entire at their apices, those 
on the legs and under surface of the body are, however, bifid. 
