304 RHYNCHOPHORA. 
89. Gereus longiusculus, sp. n. 
Oblong-rhomboidal, narrow, black, the elytra shining; above sparsely clothed with fine, narrow, whitish 
scales, which on the prothorax are condensed into a faint median stripe, and on the elytra are arranged 
in one or two lines down each interstice; the vestiture of the under surface denser and coarser, white. 
Head finely punctate ; rostrum arcuate, a little longer than the head and prothorax, moderately stout, 
closely punctate in the ¢, the apical half flattened, much smoother, and bare in the 9, the antenne 
inserted at about the middle, the antennal club ovate and rather long. Prothorax transverse, constricted 
in front, narrowing almost from the base; densely, finely, confluently punctate. Elytra oblong-triangular, 
much wider than the prothorax, flattened on the disc anteriorly ; sharply punctate-striate, the interstices 
punctulate. Beneath densely punctate ; first ventral segment broadly depressed in the ¢. Prosternum 
without definite impression. Legs rather slender; tibia feebly unguiculate. 
Length 23-8, breadth 1-13 millim. (¢ @.) 
Hab. Mexico, Guanajuato (Sallé: ¢ ), Omilteme in Guerrero (H. H. Smith: 3 2). 
One male and three females. A small, narrow form, with a dull, densely punctate 
prothorax and rather long, shining elytra, the vestiture on the latter arranged in 
great part in a single line down each interstice. The Guanajuato specimen has an 
indeterminate band of white scales on each side of the prothorax, as well as a faint 
median line. The elytra in the present species are longer than in the closely allied 
G. varipes. 
90. Gerzus varipes, sp. n. 
Subrhomboidal, narrow, shining, black, the antenne, tarsi, and apices of the tibie rufo-testaceous; above 
sparsely clothed with fine, narrow, ochreous scales, those on the elytra arranged in two lines down 
each interstice, 1 with one line only, the prothorax with a faint submarginal vitta on each side and a 
spot on the median lobe at the base white ; the vestiture of the under surface and legs whitish, denser 
and coarser on the sternal side-pieces and on the front of the prosternum. Head finely punctate ; 
rostrum arcuate, a little longer than the head and prothorax, stout and closely punctate laterally at the 
base, for the rest flattened, more slender, and almost smooth, the antenne inserted behind the middle, 
the antennal club ovate. Prothorax short, subconical ; densely, confluently punctate. Scutellum small, 
bare. Elytra subtriangular, flattened on the disc at the base; narrowly punctate-striate, the interstices 
punetulate. Beneath densely punctate. Prosternum unimpressed behind the transverse subapical 
groove. Anterior cox very narrowly separated. Tibie and tarsi slender. 
Length 23, breadth 1,4, millim. (9.) 
Hab. Mexico, Omilteme in Guerrero 8000 feet (Z. I. Smith). 
One female. Rather less elongate than G. longiusculus, the prothorax shorter, the 
rostrum (@) abruptly flattened from the basal third, the antenna, tarsi, and apices of 
the tibiz rufo-testaceous, the vestiture of the upper surface differently coloured. The 
rostrum has a deep transverse impression on the upper side at about the middle, due 
to some injury. 
91. Gerwus pallidicornis, sp. n. 
Oblong-rhomboidal, narrow, nigro-piceous, the antenne and tarsi rufo-testaceous; above somewhat thickly 
clothed with coarse, narrow, whitish and ochreous scales, the whitish scales on the prothorax condensed 
into three interrupted vittee and the ochreous ones on the elytra into a narrow sutural stripe, the 
vestiture of the elytra arranged in two lines down each interstice, the first with one line only ; 
