CYRIONYX. 193 
separated. Prosternum deeply sulcate. Legs rather short and stout; femora strongly dentate; tarsal 
claws small, free. 
Length 23, breadth 13 millim. (3?) 
Hab, Panama, Bugaba (Champion). 
One specimen. A near ally of the Guatemalan C. gidbicollis ; the head ochreous on 
the vertex ; the prothorax with a large ochreous spot on the disc, the dorsal hump 
wanting ; the elytra shorter, with the vestiture sparse and almost wholly concentrated 
into spots along the raised interstices ; the legs not so stout. 
7. Cyrionyx gibbicollis, sp.n. (Tab. XI. figg. 14, 14a, 3.) 
Subrhomboidal, convex, black, the antenne, tibia, and tarsi more or less ferruginous; thickly clothed with 
small rust-red scales, with a few white scales intermixed (those on the elytra clustered into minute 
scattered spots), the elytral interstices 3 and 5 spotted with black below the base. Rostrum strongly 
arcuate, stout, about as long as the head and prothorax, rugulosely punctate and carinate, sparsely 
punctured at the apex, the antenne inserted at about the middle. Prothorax short, narrowing from the 
base, strongly constricted in front, gibbous at the middle of the disc; densely, finely punctate. Elytra 
broad at the base, triangular; finely punctate-striate, the interstices densely rugulose, 3, 5, 7, and 9, and 
8 at the base, sharply costate, the ridge on 3 and 5 interrupted below the base. Anterior coxe well- 
separated. Beneathclosely punctate. Prosternum broadly sulcate. Legs rather stout; femora strongly 
dentate; tibise each with a slender uncus; tarsal claws small, free. 
Length 24, breadth 14 millim. (<.) 
Hab. Guatemaua, Senahu in Vera Paz (Champion). 
One specimen. Very like a Conotrachelus, but easily separated therefrom by the 
ascending mesothoracic epimera and the simple tarsal claws. ‘The dorsal hump of the 
prothorax is arcuate, viewed from the side. C. gibbicollis is one of the few Central- 
American Barids with interruptedly costate alternate elytral interstices. 
8: Cyrionyx cristatus, sp. n. (Tab. XI. figg. 15, 15a, 2.) 
Subovate, nigro-piceous, the antenne, tibiw, and tarsi obscure ferruginous; above densely, beneath more 
sparsely, clothed with small rust-red, ochreous, and white scales, the dorsal elevations ot the prothorax 
and elytra with dense clusters of long, coarse, erect setee: the white scales above and beneath condensed 
into small scattered spots, the head above, a broad space down the middle of the prothorax, and the 
space between the large dorsal elevations of the elytra ochreous, the rest of the vestiture rust-red, that 
of the legs rust-red intermixed with white, the femora each with a blackish bare patch. Head convex, 
depressed between the eyes, densely, finely punctate ; rostrum arcuate, stout, not longer than the head 
and prothorax, sparsely punctate, rugulose and finely carinate at the base, the antenne inserted at the 
middle. Prothorax transverse, abruptly narrowed and constricted in front, the sides parallel at the base, 
the short anterior portion tubulate ; densely, finely punctate, the posterior lobe with two compressed 
setigerous prominences on the disc in front, the anterior lobe with four small clusters of long erect sete. 
Elytra broad at the base, triangular, the humeri subangularly dilated ; punctate-striate, the second and 
third strie sinuate, the interstices rugulose, 3, 5, and 7 with scattered setigerous prominences, 9 sub- 
costate, the median elevation on 3 very large, oblong, and produced into a sharp tooth behind. Anterior 
coxse well separated. Beneath closely punctate. Femora sharply dentate. Tarsal claws long and 
divergent. 
Length 31, breadth 2 millim. (9.) 
Hab. Panama, Volcan de Chiriqui 3000 feet (Champion). 
BIOL. CENTR.-AMER., Coleopt., Vol. IV. Pt. 5, May 1907. 2CC 
