88 LX NATURALISTE CANADIEN 
the base of the clypeus, the frontal carina broadly interrup- 
ted at nuddle: clypeus very coarsely punctuate, very nar- 
row at base, less than half the distance to the eyes; thorax 
shghtlv broader than long, narrower in front, but less so in 
the female, sides posteriorly straight, in front arcuate, hind 
angles very little prolonged ‘, not carinate; dise convex, mo- 
derately, coarsely and closely punctuate, a very slight me- 
dian line ( fem.) not evident in the (male) ; elytra gradually 
narrower at apical third, the disc vaguely substriate near 
the base, surface more finely and sparsely punctuate than 
the thorax; body beneath coarsely. and closely punctuate; 
legs rufo-ferruginous. Length 3-53 (male)—55 (female) 
mn, 
Le Dr Horn ajoute, après cette description: “ Since my 
attention has been called to this species by the studies pre- 
liminary to this present essay, it has given me nearly as 
much trouble as my notes concerning it appear to have 
caused Bonvouloir. In comparing this species with amæni- 
cornis two very striking differences have been observed; 
first, in the form of the antennæ and, second, in the antennal 
grooves. The unusual length of the antennæ (male )has, how- 
ever, a parallel in fallax, a Brazilian species, and may there- 
fore be dismissed from further consideration. In all the 
species of Deltometopus the antennal groove is distinctly 
wider behind. /n rufipes the groove is fully as wide as the 
small propleural triangle and not wider behind but, 1f any- 
thing, widest opposite the middle of the propleural triangle. 
The width of the groove is such that the outer apical angle 
of the prosternum is cut off: by it. ” 
GERMAIN BEAULIEU. 
(A suivre.) 
1. Dans les coupes génériques du genre Del{omelopus, Bonvouloir 
indique les angles postérieurs du thorax comme fortement prolongés 
en arrière. J'avoue que ceci ne peut servir sérieusement comme caractère 
générique. 
