Os 
bo 
or) 
RHYNCHOPHORA. 
distance below the humeri, which are obliquely truncated in front and rounded externally, and abruptly 
narrowed behind, with the apex somewhat broadly produced ; coarsely and closely seriato-foveolate, the 
interstices narrow and minutely punctate, the first (sutural) somewhat rugulose. Rostral canal broad 
and deep, extending to the metasternum, and distinctly limited behind, the anterior and intermediate 
coxee hollowed on the inner side. Metasternum transversely raised and lamellato-tuberculate in front of 
each of the posterior coxe, Legs very stout; femora rugosely punctate and strongly dentate; tibie 
deeply punctato-sulcate, each armed with a strong tooth at or near the middle and unguiculate at the 
apex, the intermediate and posterior pairs also toothed at the inner apical angle. 
Length 53-52, breadth 33-33 millim. (@.) 
Hab. GuateMata, Panzos in the Polochic Valley (Champion, Conradt). 
Two specimens. This insect agrees perfectly in general structure with the typical 
members of the genus, except that the rostral canal is deeper and broader, and extends 
to the metasternum. C. spinifer, Boh., is probably an allied species, and I have seen 
other unnamed somewhat similar forms in the British Museum, one from Colombia 
being very like C. crassipes. 
RHYSSOMATUS. 
Rhyssomatus, Schénherr, Gen. Cure. iv. p. 364 (1837); Lacordaire, Gen. Col. vii. p. 68; Horn, 
Proc. Am. Phil. Soc. xiii. p. 463. 
Rhyssematus, Leconte, Proc. Am. Phil. Soc. xv. p. 236. 
Ryssematus (Chevrolat, in Dej. Cat.), Casey, Ann. N. York Acad. Sci. vi. p. 448. 
A genus confined to the New World, and including numerous very closely allied 
forms, mainly separable by the sculpture of the prothorax and elytra. The tarsal 
claws are cleft or toothed, and sometimes subapproximate at the base. The inter- 
mediate and posterior tibie are usually sharply toothed or angulate on the outer edge 
towards the apex, but in a few species the outer margin is straight. 
a. Intermediate and posterior tibize toothed or angulate on their outer edge at 
some distance before the tip, and the space between this and the outer 
apical angle more or less concave and ciliate; tarsal claws, as a rule, well- 
separated and the long inner tooth easily seen. 
a'. Body oblong ; prothorax obliquely strigose ; elytra punctato-sulcate, with 
flat, densely rugose interstices . . 2. . 2... 1 1. ww es) Species 1. 
b'. Body oval or subrhomboidal. 
a’, Rostrum not or scarcely depressed at the base above, feebly or 
moderately curved. 
a’, Eyes contiguous or narrowly separated. 
a’, Alternate elytral interstices costate throughout (except in some 
specimens of R. sculpturatus). 
a’. Anterior coxe narrowly separated. 
a°. Prothorax with the disc longitudinally strigose . . . . . Species 2, 3. 
6°. Prothorax with the disc obliquely strigose. 
a’. Prothorax tuberculate at the sides inferiorly . . . . . Species 4. 
