68 RHYNCHOPHORA. 
the specimens before me, including one from south of our region, the elytra are much 
flattened on the disc, with the interstices narrowly and interruptedly carinate, the 
carine formed by smooth, oblong, coalescent tubercles; and the prothorax is trans- 
versely quadrate, not conspicuously carinate. In Lacordaire’s figure of O. scabricollis 
(Gen. Col., Atlas, t. 69. fig. 1) the elytra are represented as uninterruptedly carinate 
from the base to the apex. 
2. Oncorrhinus latipennis, sp. n. (Tab. V. fig. 5, 3.) 
Broad, moderately convex, black, the tarsi and antenne piceous or rufo-piceous, sparsely setose. Rostrum seriate- 
punctate, shining at the apex, with a smooth median carina, the apical portion short in the d, and much 
longer and almost entirely smooth in the 9; head deeply foveate in the middle in front. Prothorax 
flattened on the disc, transversely quadrate, strongly bisinuate at the base and apex, the anterior lobe 
considerably produced, the sides hollowed towards the base, the hind angles acute (as seen from above) ; 
the surface (except in the hollow space on each side of the anterior lobe) very coarsely, irregularly, 
foveolato-punctate, the punctures here and there confluent, and the interspaces sinuously raised and 
shining, the disc sometimes with indications of an irregular, abbreviated, median carina. Elytra mode- 
rately convex, somewhat heart-shaped, at the base strongly trisinuate and fully one-half broader than the 
prothorax, gradually narrowing from the prominent and obliquely subtruncate humeral callosities ; finely 
and shallowly seriate-punctate, the punctures becoming evanescent towards the apex, the interstices each 
with a scattered series of small, rounded, shining tubercles, each of these bearing a stout, decumbent, 
ochreous, piliform scale, the third subcarinate at the base. Femora coarsely punctate ; tibie in both. 
sexes angularly dilated on the inner side before the middle, the anterior pair acutely so. Venter depressed 
in the middle at the base in the ¢. 
Length 73-9, breadth 43-4 millim. (¢ @.) 
Ilab. Nicaragua, Chontales (Belt, Janson); Panama, Volcan de Chiriqui (Champion). 
Found in numbers in Chiriqui. Very like A. nodulosus, Fahr., from Caracas, &c., 
but with the prothorax wider at the base, and the smooth, setigerous, elytral tubercles 
rounded, instead of oblong *. The more convex, differently sculptured, and somewhat 
heart-shaped elytra separate it at a glance from 0. scadricollis. 
ANCHONUS. 
Anchonus, Schéuherr, Cure. Disp. méth. p. 257 (1826); Gen. Cure. iii. p. 507 (part.) (1836) ; 
Lacordaire, Gen. Col. vi. p. 862 (part.) ; Faust, Deutsche ent. Zeit. 1892, p. 20. 
Nearly one hundred species of Anchonus have been described, mostly from the 
Antilles or the mainland of Tropical America, the genus extending from Florida to 
Chile, and also occurring in the Galapagos and Cocos Islands; it is extremely well 
represented within our limits. The chief characters of the genus are the 8-jointed 
funiculus and the contiguous anterior coxe, Cestophorus differing from it in having a 
* There are specimens of another closely allied form, labelled as from Mexico and Brazil, in the British 
Museum; but this insect has the prothorax longer and more parallel-sided, with a less pronounced anterior 
lobe, and the entire surface foveolato-punctate, the rostrum smoother, and the head trifoveate. The habitat 
‘** Mexico” requires corroboration. 
+ Twenty-one are enumerated by Chevrolat from Guadeloupe. 
