PSEUDOBARIS. 435 
17. Pseudobaris cylindricollis, sp.n. (Tab. XXI. figg. 16, 16a, ¢.) 
Oblong-ovate, shining, black; the sides of the prothorax, the elytra, under surface, and legs sparsely clothed 
with very fine, hair-like, white scales, the elytra with a dense oblong patch of coarser scales at the base 
of the third interstice and various scattered long white decumbent set, these latter placed on the 
interstices 3, 5, 7, and 9 and intermixed with the uniseriately-arranged finer vestiture. Head closely, 
finely punctate, transversely depressed between the eyes; rostrum stout, strongly arcuate, about as long 
as the prothorax, closely punctate, the antennae inserted at the middle in both sexes. Prothorax 
transverse, rather convex, subcylindrical, abruptly and arcuately narrowed in front; coarsely, closely 
punctate. Elytra considerably wider than the prothorax, gradually narrowing from the rounded humeri ; 
deeply punctate-striate, the interstices closely and finely uniseriate-punctate, 3 widened at the base. 
Beneath closely punctate ; first ventral segment slightly depressed along the middle in the ¢. Prosternal 
sulcus deep, straight. Anterior femora with a short tooth. 
Length 2-23, breadth 7-11 millim. (do @.) 
Hab. Mexico (Zruqui, in Mus. Brit.), 'Toxpam (Sallé), Chilpancingo (//. H. Smith), 
Puente de Ixtla (Wickham); GuaTEMALa, Guatemala city (Salvin, Champion), San 
Joaquin, San Gerénimo (Champion); Nicaragua, Managua, Corinto (Solari) ; Costa 
Rica, Patarra 1300 metres (biolley). 
Found in abundance at Guatemala city. A small narrow form * nearly related to 
the N.-American P. nigrina (Say), but with a subcylindrical, more coarsely and less 
densely punctured prothorax, &c. The finer vestiture is soon abraded, but the long 
scattered setze and the white basal spot on the elytra are always conspicuous. ‘The 
sexes are scarcely distinguishable, except by the form of the pygidium. The smaller 
specimens superficially resemble the N.-American Plesiobaris disjuncta. 
18. Psudobaris nevius, sp. n. 
_ 6. Oblong-ovate, rather convex, shining, black; the elytra with a few scattered long, coarse, decumbent 
white sets on the alternate interstices 3, 5, 7, and 9, the third with a small patch of narrow whitish 
scales at the base, the punctures on the under surface and legs each bearing a minute scale. Head 
sparsely, minutely punctate, transversely grooved between the eyes; rostrum strongly arcuate, stout, 
nearly as long as the head and prothorax, closely strigoso-punctate, the antenne inserted at the middle. 
Prothorax transverse, strongly constricted in front, the sides rounded anteriorly and parallel at the base ; 
sparsely punctate, except along the smooth median line. Elytra slightly wider than the prothorax, 
depressed along the suture anteriorly, the humeri not prominent ; finely punctate-striate, the interstices 
broad, flat, narrowly costate at the apex, each with a row of scattered very minute punctures, the third 
widened at the base. Pygidium large, convex. Beneath sparsely, the abdomen very finely, punctate ; 
first ventral segment deeply suleate. Prosternum deeply sulcate from the apex to the base. Legs short ; 
femora stout, feebly dentate ; anterior tibie strongly, the others more feebly, unguiculate. 
Length 24, breadth 14}, millim. 
Hab. Guatemata, Tamahu in Vera Paz (Champion). 
One somewhat abraded male. A small black form superficially resembling 
P. callosipennis, with rounded apices to the elytra, a stouter rostrum, a longer and 
deeper prosternal sulcus, stouter and feebly dentate femora, &c., the first ventral 
segment (¢) deeply sulcate. Smoother than P. cylindricollis, the elytra finely 
striate, &c. 
* The insect is a little narrower than represented on the Plate. 
3 KK 2 
