GERAUS. 801 
the tip, closely punctate,—the apical portion flattened, longer, and almost smooth in the 9 ,—the antenne 
inserted at ( ¢ ) or behind ( 2 ) the middle, the antennal club ovate. Prothorax transverse, subconical, 
densely, finely punctate, with indications of a smooth median line. Scutellum almost bare. Elytra 
triangular, narrowly punctate-striate, the interstices rugulosely punctate. Beneath densely punctate. 
Prosternum unarmed. Anterior tibia of the ¢ narrow, strongly unguiculate, sinuous within. 
Length 3-3}, breadth 13-13 millim. (¢ 2.) 
Hab. Mexico, Chilp incingo and Omilteme in Guerrero (H. H. Smith). 
One male and two females. Very. like G. hospes, but more sparsely squamose 
above, the scutellum almost bare, the rostrum less abruptly narrowed (especially in 
the 2}, shorter in the male, the anterior tibia narrow, not excised near the tip 
beneath in the male, the antenne and tarsi almost wholly ferruginous. 
83. Gerzeus rubritarsis, sp. n. 
Rhomboidal, black, the antenn and tarsi rufo-ferruginous; above sparsely clothed with fine, hair-like, 
whitish scales, which become a little more crowded at each angle of the prothorax and on the median 
lobe, those on the elytra arranged in one or two rows down each interstice, the vestiture of the under 
surface coarser, white, dense on the anterior portion of the prosternum and on the metathoracic episterna. 
Head finely punctate, transversely depressed between the eyes; rostrum strongly arcuate, a little longer 
than the head and prothorax, moderately stout, sparsely punctate, smoother in the Q, the antenne 
inserted slightly beyond ( 3) or behind ( 2) the middle, the antennal club ovate. Prothorax transverse, 
narrowing from the base, constricted in front ; densely punctate, with an incomplete smooth median line. 
Elytra triangular, deeply punctate-striate, the interstices rugulosely punctate. Beneath densely punctate ; 
first ventral segment hollowed down the middle in the ¢. Prosternum unarmed, transversely foveate in 
the subapical groove. Legs rather long and slender; anterior tibie strongly unguiculate in the ¢. 
Length 23-34, breadth 12-14 millim. (¢ 9.) 
Hab. Mexico, Juquila in Oaxaca (Sallé: ¢ 2); Guaremaa, Trece Aguas (U.S. Nat. 
Mus.: ¢); Panama, Tabernilla, Canal Zone (Busck, in U.S, Nat. Mus.: ¢ ). 
A pair from Juquila (taken as the types) and one specimen from each of the other 
localities. Distinguishable amongst its allies with unarmed prosternum by the sparse, 
fine vestiture of the upper surface, which is somewhat condensed at each angle of the 
prothorax, the rufescent antenne and tarsi, &c. G. rudritarsis approaches G. incolatus, 
but differs from it in the sparser and finer vestiture, especially of that of the prothorax. 
84, Gereous varius, sp.n. (Tab. XVI. figg. 17, 17 a, 2.) 
Subrhomboidal, narrow, shining, black, the elytra in one specimen each with a transverse rufous patch on 
the outer part of the disc before the middle; sparsely clothed (the funiculus included) with setiform, 
semierect, white scales, which are arranged in a single series along each elytral interstice; the under 
surface thickly set with larger pure white scales. Head sparsely punctate; rostrum arcuate, longer 
than the head and prothorax, rather stout, thickly punctate on each side at the base and almost 
smooth thence to the tip, the antenne inserted behind the middle, the antennal club stout, short-ovate. 
Prothorax transverse, rounded at the sides anteriorly, constricted and much narrowed in front; coarsely, 
confluently punctate. Elytra subtriangular, deeply punctate-striate, the interstices somewhat convex 
and roughly uniseriate-punctate. Beneath densely punctate. Prosternum unimpressed behind the 
transverse subapical groove. Legs moderately long; anterior and intermediate tibiz unguiculate, 
Length 3-31, breadth 13-13 millim. (@.) 
Hab. Mexico, Chilpancingo (Hoge), Soledad (ZH. H. Smith). 
Two females, both from Guerrero, the one from Chilpancingo with a bright rufous 
