EUSTYLUS. 295 
behind by a u-shaped ridge, the scrobes short, converging posteriorly ; eyes very large, rounded, 
prominent; antennal scape moderately stout, reaching the front of the prothorax. Prothorax longer 
than broad, somewhat rounded at the sides, very little narrower at the apex than at the base, the base 
subtruncate ; with coarse scattered punctures intermixed with a fine interstitial punctuation. Scutellum 
small. Elytra subparallel in their basal half in ¢, broader and widened to near the middle in 9°, 
moderately produced at the apex, the humeri obliquely truncate, somewhat prominent in g, obtuse 
in 9; uneven, coarsely punctate-striate, the alternate and outer dorsal interstices interruptedly costate, 
the prominences becoming tuberculiform beyond the middle. Anterior femora unarmed. Anterior 
and intermediate tibie unguiculate in both sexes, the anterior pair obsoletely denticulate. Wings 
rudimentary. 
Var, The elytra more produced at the apex, the alternate and outer dorsal interstices almost uninterruptedly 
costate, the fifth sometimes with an oblong spot at about the basal fourth, or the scales of the apical 
declivity, yellowish. 
Length 53-7, breadth 14-2? millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui 4000-8000 feet, Caldera, Boquete, Pefia Blanca 
(Champion). 
A long series from the Volcan de Chiriqui; the variety is represented by three 
examples from Pefia Blanca and one from Boquete. ‘This species differs from the 
Guatemalan LE. cinericius in having a larger, concave, bare nasal plate; the rostram 
smooth, bare, and more or less sulcate down the middle, and with the scrobes 
converging posteriorly ; the alternate elytral interstices (in the typical form) inter- 
ruptedly costate or tuberculate, and the humeri somewhat prominent in the male. 
The scrobes are shorter than in Brachyomus and Synthlibonotus. 
9. Hustylus subapterus, sp.n. (Tab. XIII. figg. 28, 284, ¢.) 
Elongate, rather convex, narrow (3), broader (@), piceous or obscure ferruginous ; thickly clothed with 
coppery-brown and greyish scales, the elytra sometimes with an oblique pallid spot or fascia on the 
outer part of the disc at about the middle and an indeterminate or irregular transverse blackish patch 
just beyond it, the scales on the under surface greyish ; the elytra also set with numerous semierect, 
broad, oval or oblong, light and dark scales, which are chiefly clustered along the alternate dorsal 
interstices, the rest of the surface with short, scattered, decumbent sete. Head and rostrum canalicu- 
late, the rostrum about as long as broad, the scrobes slightly converging posteriorly, the head flattened 
between the eyes, the latter rounded and very prominent; antennal scape gradually widened outwards, 
reaching beyond the front of the prothorax, joints 1 and 2 of the funiculus subequal in length. 
Prothorax longer than broad, slightly rounded at the sides, compressed before the middle, subtruncate at 
the base, finely punctate. Scutellum very small. Elytra oblong-oval in ¢, broadened and widened to 
the middle in 9, convex, conjointly produced at the apex, the humeri obliquely truncate and not 
prominent; punctate-striate, the alternate dorsal interstices raised. Legs stout; anterior femora 
unarmed. Wings rudimentary. 
Length 62-83, breadth 2-3 millim. (¢ 9.) 
Hab. Mexico, Chiapas (Sallé); Guatemata, Quiché Mts. (Champion), Tecpan 
(Conradi). 
Six specimens, varying in the extent of the maculation of the elytra. The chief 
characters of this species are—the long, gradually widened antennal scape; the 
subquadrate rostrum with posteriorly converging scrobes; the comparatively smooth 
