OCHETINA.—ONYCHYLIS. 133 
inserted at about one-third from the apex of the rostrum, joints 1 and 2 of the funiculus elongate and 
equal in length, 1 stouter than 2; eyes large, transverse, coarsely facetted, narrowly separated beneath. 
Prothorax convex, transverse, rounded at the sides, strongly bisinuate at the base, not constricted in 
front ; the surface (when cleaned) alutaceous and finely punctate. Elytra much wider than the pro- 
thorax, deeply striate, the strie with scattered punctures, the interstices convex and alutaceous, the 
humeri broadly rounded. Legs stout; tarsi elongate, the third joint slightly wider than the second and 
feebly excavate at the apex. 
Length 4, breadth 2 millim. (? 3.) 
Hab. GuaTEMALA, Paso Antonio (Champion). 
One specimen, from a lagoon in the savana-region of the Pacific slope. Very like 
O. uniformis, Pasc., from the Amazons, but narrower and a little more convex, the 
rostrum shorter and with the antenne inserted much nearer the tip, the prothorax 
strongly sinuate at the base and with the surface much smoother, the elytra without 
distinct rounded prominences, the humeri rounded (instead of subangular). ‘The type 
of O. uniformis is a female, that of O. induta probably a male. 
ONYCHYILIS. 
‘Onychylis, Leconte, Proc. Am. Phil. Soc. xv. p. 178 (1876). 
This genus includes a few American species closely related to Bagous. They have 
the tibie stout, sinuous, shallowly grooved on the inner side, and truncated at the 
apex; the third tarsal joint dilated and bilobed; the funiculus 6-jointed; and the 
prosternum level. ‘The rostrum, too, is almost smooth, shining, and glabrous in 
the females, and squamose and rugulose to near the tip in the males. The Central- 
American forms, like those belonging to the genus Lissorhoptrus, are extremely closely 
allied to those inhabiting the United States. 
1. Onychylis meridionalis, sp. n. (Tab. VIII. figg. 14, 144, ¢.) 
Obovate, dull black, densely clothed with rather shining, greyish, agglutinated scales, the prothorax with two 
paler vittze on the disc and the elytra with lighter and darker markings, appearing to have a common 
V-shaped darker fascia on the disc and an oblong mark on the suture in front of this, the antenne and 
the legs in part ferruginous. Rostrum moderately stout, curved, rather longer than the prothorax,— 
in the ¢ densely rugulose, squamose, and dull to near the tip, in the Q shining, sparsely punctate, and 
glabrous. Prothorax strongly transverse, rounded at the sides, slightly constricted in front, bisinuate at 
the base, the surface closely and somewhat coarsely punctate. LElytra fully one-half wider than the 
prothorax, rather short, deeply striate, the stria with moderately coarse, somewhat distantly placed 
punctures, the interstices convex and densely reticulate, the pale spots towards the sides and apex 
apparently arising from feeble elevations. Legs moderately stout; third tarsal joint broad, bilobed. 
Metasternum and first ventral segment with a broad, common, oblong depression in the middle in 
the ¢. 
Length 24-3, breadth 13-13 millim. (¢ 2.) 
Hab. Guatemata, Paso Antonio (Champion). 
One pair, from the low country bordering the Pacific coast. Extremely like the 
North-American 0. nigrirostris, Lec., but differing from a specimen (¢ ) of that species 
