102 RHYNCHOPHORA. 
Lobes of third tarsal joint very short; head very convex . Pseudelissa. 
Lobes of tarsi normal. 
Rostrum very short and broad, not longer than wide. 
Pterygia of apex of rostrum visible from the 
front. . 2. . .. oe . . . . Bradyrhynchus. 
Pterygia of rostrum entirely concealed . . . . Sevorhinus. 
Rostrum normal. 
Scrobes slender; corbels of posterior tibize 
markedly cavernous . . . . . . . Epicerus. 
Scrobes broader; corbels usually feebly cavernous. Hpagrius. 
Front femora dentate or tuberculate. 
Scutellum with a transverse process at the apex . . . . . . . . Cleistolophus. 
Scutellum acuminate at the apex. 
Scape of antenne elongate ; scrobes quite indefinite . . . . . Epitosus. 
Scape short or moderate; scrobes slender, deep. 
Thorax elongate. 
Head a little constricted behind the eyes . . . . . . Eumestorus. 
Head not constricted behind the eyes . . . . . . . Mestorus. 
Thorax more or less globose. 
Eyes convex and close to the thorax; head not broader 
behind them. . . . Lo Maseorhynchus. 
Eyes placed some distance i in front of ‘the thorax ; head 
broader behind them . . . .. . . . . +. . ~~. ~ Bufomicrus. 
DEAMPHUS, gen. nov. 
Rostrum breve, scrobibus latissimis, posterius evanescentibus, ad latera sitis, descendentibus. 
I propose this genus for some insects differing greatly from Epicwrus in the form of 
the scrobes, which are extremely broad and vague behind. The rostrum is very short, 
not longer than the head. The scape of the antennze is rather long and passes the eye ; 
this latter is round and placed far in front of the thorax. The thorax is broad and 
strongly transverse; it entirely covers the very large scutellum, which does not penetrate 
between the elytra. These latter are short, with rounded, not prominent shoulders. 
The middle coxe are only slightly separated, the epipleura is rounded at the shoulder, 
and the mesothoracic epimeron is quite minute. The metasternum is very short. The 
corbels of the posterior tibize are feebly cavernous. 
These insects do not much resemble Epicerus in appearance, and in this respect come 
nearer to Amphidees ; there is, however, no trace of any ocular lobes on the thorax, so 
that the genus must be separated from the forms I have included in Amphidees. ‘The 
Colombian genus Amphideritus resembles Deamphus in the form of the scrobes, and 
also in its general appearance; but it has the elytra broader than the thorax, and the 
scutellum visible at the base of the suture, so that it probably belongs in the “ Otio- 
rhynchine alate.” In each of these two genera the front coxe are minutely 
