192 RHYNCHOPHORA. 
the metasternum, arcuate, rugulosely punctate and finely carinate, the apical half rather sparsely 
punctured, the antennze inserted behind the middle, the club acuminate-ovate. Prothorax convex, 
transverse, conical, strongly constricted in front; densely, finely punctate and sharply carinate. Elytra 
triangular, rather long, broad at the base, the humeri prominent, obtuse ; finely punctate-striate, the 
interstices densely rugulose, 3, 5,7, and 9 sharply costate, the ridge on 3 extending to the apex. Beneath 
closely punctate. Prosternum narrowly sulcate. Legs rather stout ; femora strongly dentate ; tarsal 
claws subconnate at the base. 
Length 43, breadth 24 millim. (9?) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
One specimen. Smaller and less robust than C. reticulatus, the prothorax sharply 
carinate, the acute ridge on the third elytral interstice extending to the apex, the 
humeri less angular, the antennal club longer and more acuminate. 
5. Cyrionyx reticulatus, sp. n. (Tab. XI. figg. 12, 12 a.) 
Broad, rhomboidal, nigro-piceous, the antenne (the club excepted) ferruginous ; mottled above with a dense 
clothing of small fulvous and whitish scales, the prothorax with several bare dark spots on the disc, the 
elytra irregularly reticulate with black on the disc towards the middle; the vestiture of the under surface 
and legs also close, fulvous and whitish intermixed. Rostrum long, rather slender, strongly arcuate, 
striato-punctate and carinate at the base, and for the rest sparsely, finely punctaie, the antenne inserted 
behind the middle, joints 1 and 2 of the funiculus equal in length. Prothorax transverse, narrowing 
from the base, compressed on either side of the convex disc anteriorly, and abruptly narrowed and strongly 
~ constricted in front: densely, finely punctate, and feebly carinate. Elytra triangular, broad at the base, 
the humeri angularly dilated; finely punctate-striate, the interstices rugulose, 3, 7, and 9 very sharply 
(especially down the anterior half), and 4-6 feebly (except towards the base), costate, the ridge on 3 not 
reaching the apex. Beneath closely punctate ; prosternum narrowly sulcate ; ventral segments 1 and 2 
slightly depressed down the middle. Legs stout, rather short ; femora strongly dentate ; tarsi with the 
third joint broadly bilobed, the claws contiguous at the base. 
Length 51, breadth 33 millim. (2 ?) 
Hab. Panama, David (Champion). 
One specimen. The strongly constricted prothorax, the very acute ridge on the 
anterior half of the third, seventh, and ninth elytral interstices, the angularly dilated 
humeri, the stout legs, and the close, mottled vestiture distinguish C. reticulatus. 
Larger and more robust than C. octocostatus, the scrobes rapidly descending and only 
in part visible from the side. 
6. Cyrionyx maculicollis, sp.n. (Tab. XI. figg. 13, 13 a.) 
Short ovate, convex, black, the antenne and tibie obscure ferruginous ; the elytra sparsely, the rest of the 
upper surface thickly, clothed with minute scales: the head ochreous, mottled with fulvous in front; the 
prothorax with a large spot on the disc at the base and a median line extending thence to the apex 
ochreous, for the rest fulvous intermixed with white; the elytra with the humeri in front and several 
small spots along the raised alternate interstices fulvous, the third and fifth also spotted with black; the 
vestiture of the legs fulvous, slightly intermixed with white. Rostrum strongly arcuate, stout, a little 
longer than the head and prothorax, rugulosely punctate, smoother at the tip, the antenne inserted 
beyond the middle. Prothorax transverse, constricted and much narrowed in front; densely, finely 
punctate. Elytra broad, subtriangular ; punctate-striate, the interstices punctulate, 3, 5, 7, and 9, and 
8 at the base, sharply costate, the ridge on 3 and 56 interrupted anteriorly. Anterior coxe well- 
