DITAPHRUS.—ANEUMESA. 455 
Only three examples have been received of this species. One of them is a male, and 
I find it very difficult to detect in it a clear separation between the first and second 
joints on the hind feet. 
ANEUMESA, gen. nov. 
Corpus parvum, subtus planum, supra convexum, costatum. Antenne parva, undecim-articulate; clava 
biarticulata, sed articulis imperfecte disjunctis. Sulci antennarii tenues sat perfecti. Pedes breves, debiles. 
This interesting genus is an intermediate form in two very important respects—the 
antenne have a two-jointed club with imperfect separation between the two joints, and 
the antennary grooves are in a similarly doubtful condition. It is thus, to some extent, 
intermediate between Acolobicus and Ditaphrus. It is, however, in its general characters 
very close to the latter genus; but whereas in Ditaphrus the antennary grooves are 
shallow and comparatively broad, in Aneumesa they are slender and rather deep, and 
limited internally by a fine distinct line. The division between the first and second 
joints of the hind tarsi is, as in Ditaphrus, less distinct than usual. 
If a division of the Synchitinee were based on the presence or absence of distinct 
antennary grooves, this genus would come in the first category; while Ditaphrus, on 
the contrary, would have to be placed in the division in which these grooves are absent. 
The type of Pascoe’s genus Zanclea looks exactly like an Anewmesa, but the descrip- 
tion states that the antenne are 12-jointed, and there are no antennary grooves. We 
must therefore treat Anewmesa as distinct until it can be shown that Pascoe was wrong 
as to these two important particulars. 
1. Aneumesa atomaria, sp. n. 
Ovalis, supra convexa, testacea, opaca; elytris nigro-signatis, capite posterius prothoraceque disco infuscatis ; 
prothorace elytrisque costatis. 
Long. 12 millim. 
Hab. Panama, Bugaba (Champion). 
Antenne very small, short, pale yellow; ninth joint small, transverse; club divided 
by a quite straight fine suture into two equal parts. Head short, with a fine supra- 
ocular line close to the eye. Thorax transverse; sides explanate; front angles much 
produced ; two strong coste on each side of the middle, the exterior one curving round 
inwards on the front margin; sculpture of the surface very minute and obscure. Elytra 
broad and short, continuous in outline with the thorax, the sides explanate; yellow, 
with several definite black marks, the largest of which is scutellar ; there are several 
very fine longitudinal coste, surmounted by extremely minute yellow sete; sculpture 
of the intervals extremely obscure. Legs short and slender. Under surface extremely 
finely sculptured. 
Zanclea testudinea, Pascoe, from the Amazons, is, according to the type specimen, a 
broader insect than A. atomaria, and has a shining surface. 
