CYRIONYX. 195 
11. Cyrionyx cavirostris, sp.n. (Tab. XI. figg. 18, 18a, 3.) 
Rhomboidal, convex, dull, piceous ; clothed with minute, narrow, intermixed brownish and flavo-cinereous 
scales, which are here and there clustered into small fascicles on the elytra, the elytra also with a narrow 
transverse streak of coarser white scales on each side below the shoulder; the vestiture of the under 
surface sparse, cinereous. Rostrum strongly arcuate, stout, a little longer than the head and prothorax, 
thickened and sulcate at the middle beneath, rugosely punctate, smoother at the tip, the antenne 
inserted at about one-third from the apex. Prothorax transverse, rounded at the sides, moderately 
convex, constricted and much narrowed in front; densely, finely punctate and feebly carinate. Elytra 
broad at the base, triangular, rather long; punctate-striate, the punctures oblong in shape, the interstices 
densely rugulose, each very finely and narrowly costate down the middle, the ridges becoming obsolete 
towards the base and more distinct towards the sides. Beneath closely punctate; first ventral segment 
broadly depressed down the middle. Femora acutely dentate. Tarsal claws free. 
Length 34, breadth 2 millim. (<¢.) 
Hab. Mexico, Jalapa (Hoge). 
One specimen. An isolated form, with the median portion of the rostrum thickened 
and sulcate beneath, the elytra with a transverse white streak on each side below the 
shoulder, their interstices faintly costate down the middle. 
12. Cyrionyx camelus, sp.n. (Tab. XI. figg. 19, 19 a.) 
Subrhomboidal, opaque, black, the femora piceous, the antenne, tibie, and tarsi more or less ferruginous ; 
somewhat thickly clothed with minute fulvous, white, and black scales, the dorsal hump of the prothorax 
with a cluster of long, erect setee: the prothorax with a triangular black patch on the disc behind, 
divided by a white or fulvous median line, the flanks sometimes with a streak of coarser pure white 
scales; the elytra (except across the base, which is almost bare) variegated with fulvous, black, 
and white, the black scales condensed into a transverse patch on the disc before the middle (which is 
limited externally by a pure white spot on the fourth interstice), one or two common curved fascize below 
it, and a transverse subapical band; the sides of the metasternum densely clothed with rather coarse pure 
white scales, the rest of the under surface and the legs with minute fulvous and white scales, Rostrum 
stout, strongly arcuate, sparsely punctate, the antennz inserted at the middle. Prothorax transverse, 
narrowing from the base, abruptly constricted in front, the short anterior portion tubulate; densely, 
finely punctate, the posterior lobe with a large, angular, compressed, setigerous hump on the disc in front. 
Elytra triangular, flattened on the disc at the base; very finely punctate-striate, the interstices flat and 
minutely punctulate, 7 and 9 narrowly costate, 2 and 3 slightly swollen before the middle. Beneath 
closely punctate. Metasternum broad and flattened between the middle coxe. Anterior coxe narrowly 
separated. Femora each with a short acute tooth. ‘arsal claws free. 
Length 24-24, breadth 14-12 millim. 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Four specimens, one of them abraded. This insect may be known by the large, 
angular, setigerous hump on the prothorax, the peculiarly marked, somewhat flattened 
elytra, and the dense patch of pure white scales on the sides of the metasternum. It is 
very like Scambus galeatus, Boh., but is smaller and narrower, the dorsal prominence 
on the prothorax is not curved backward, the humeri are less explanate, &c. 
13. Cyrionyx cuneatus, sp. n. 
Rhomboidal, shining, fusco-castaneous, the rostrum, antenne, and tibie ferruginous; mottled above with 
small, narrow, ochraceous scales intermixed with scattered darker scales, the former clustered into a short 
20C2 
