LONGICORNIA. 827 
differing in the thorax having in the middle of each side a pointed tubercle, and the 
mesosternum having a conical convexity. In form of body it is more elongate than any 
species of Tylosis, but in the peculiarity of having 12-jointed antennz in both sexes it 
agrees with that genus, and not with Oxoplus, to which it might otherwise be referred. 
All three genera agree in the mandibles being broad and notched at their apices. 
1. Hegea distigma. (Tab. XXI. fig. 25, ¢.) 
Nigra, nitida, brevissime setosa, thorace supra et elytris testaceo-rufis vel aurantiacis, illo callis quatuor, his 
utrinque paullo post medium macula rotundata discoidali, ‘nigris; thorace grosse alveolato-punctato ; 
scutello nigro, triangulari; elytris undique confertim sed discrete punctatis, apice flexuoso-truncatis, 
angulis suturali et externo breviter spinosis. 
Long. 63-9 lin. ¢ Q. 
Hab. Mexico, Bobo (Hége). 
Taken in great abundance in one locality only. 
CROSSIDIUS (p. 81). 
Crossidius trivittatus (p. 82). 
Mr. Flohr has taken this species in some numbers at El Salto, near Huehuetoca, and 
finds it extremely variable with regard to the dark stripes of the elytra. The extreme 
varieties are,—one in which the elytra are wholly tawny yellow (with the exception of 
a narrow sutural border), and another in which they are entirely dark brassy green. In 
some examples the thorax has two or three large tawny spots. 
The species agrees with Crossidius (besides the characters previously mentioned) in 
the mandibles being broad and notched at the apex. 
MANNOPHORUS (p. 82). 
3. Mannophorus forreri. (Tab. XXI. fig. 24.) 
Valde elongatus, fere cylindricus, fulvo-rufus; capite, antennis, pedibus, meso- et metasterno, maculis quinque 
thoracis, scutello et elytrorum triente apicali, nigris; thorace rotundato, basi constricto angulisque posticis 
porrectis, dorso confluenter punctato ; scutello apice attenuato ; elytris apice oblique truncatis, utrinque 
bicostatis, punctulatis, apice grossius intricato-punctatis ; subtus tenuiter griseo-pubescens, 
Long. 10-11 lin. $6 @. 
Agrees better generically with Mannophorus lwtus than with [schnocnemis, the thorax 
being broader and rounder than in members of the latter genus, and the antenne, in 
the male especially, shorter, and not much longer than the body. 
ISCHNOCNEMIS (p. 83). 
Ischnocnemis costipennis (p. 83). 
g. Thorax niger. (Leptocnemus costipennis, De}. Cat.) 
¢. Thorax fulvus, nigro-tripunctatus. (Leptoenemus tripunctatus, Dej. Cat.) Variat: vel elytra fulva mar- 
ginibus angustis nigris, vel nigra costulis pallidis. 
