COPIDITA.—OXACIS. 149 
maxillary palpi is broad and similarly shaped. The antenne taper outwardly, joints 
1-5 being stouter than the others. C. parvula somewhat resembles Sisenes lineatocollis, 
from which it may be at once distinguished by the coarsely granulated and larger eyes, 
broad apical joint of the maxillary palpi, posteriorly constricted thorax, shorter head, 
&c. 
2. Hyes finely granulated, small ; last joint of the maxillary palpi subtriangular. 
8. Copidita nigripennis. (Tab. VII. fig. 7.) 3 
Elongate, narrow, opaque, thickly clothed with rather coarse ashy pubescence; the head (the basal part of 
the mandibles excepted) black; the prothorax reddish-yellow, slightly stained with piceous at the base in 
front of the scutellum ; the elytra bluish-black. Head densely and very finely punctured, the eyes rather 
small and finely granulated ; antenne piceous, the two basal joints fusco-testaceous, stout, rather short, 
joints 1 and 3 about equal in length and comparatively short, 1 very stout, 2 half the length of 3, 11 
strongly constricted at the middle; prothorax convex, much longer than broad, the sides moderately 
rounded anteriorly and gradually converging behind, the disc canaliculate in the centre at the base and 
with a very shallow oblique depression on either side before the middle, the surface densely and very 
finely punctured; elytra comparatively short, very obtuse behind, the surface scabrous and with indistinct 
traces of very fine raised lines; beneath densely punctured, piceous or black, the prothorax reddish- 
yellow ; legs thickly pubescent; rather stout, piceous, the tibize and coxe fusco-testaceous. 
Length 63-7 millim. 
Hab, Mexico (Sallé). 
Three examples, all in a bad state of preservation, apparently females. This species, 
which is not labelled with any more exact locality, closely resembles a Chilian insect 
described by Fairmaire under the name of Nacerdes brevipennis; from which it differs 
in the head and thorax being more finely punctured, the latter more convex, with the 
impressions shallower and the median ridge obsolete; the antenne shorter and stouter, 
and with a very stout basal joint; the elytra more scabrous and unicolorous. The last 
joint of the maxillary palpi is stout and elongate-triangular, with its inner side much 
shorter than the apical side; the mandibles are bifid. In all three examples the ashy 
pubescence of the elytra is more dense along the suture and at the sides, but this is 
probably due to abrasion. 
OXACIS. 
Oxacis, Leconte, New Species Col. p. 165 (April 1866); Leconte & Horn, Class. Col. N. Am. 
p. 405 (1883). 
Probosca, Leconte, New Species Col. p. 166 (nec Schmidt, Lacordaire). 
Hypasclera, Kirsch, Berl. ent. Zeitschr. xxx. p. 210 (July 1866). 
This will probably prove to be the most widely distributed genus of the Cidemeride ; 
and, as understood here, it contains a large number of species from the warmer parts 
of the Old and New Worlds, the Antilles, various Oceanic islands (Sandwich Is., Tahiti), 
Fiji, New Caledonia, &c. ; it is, however, absent from Europe. ‘The only species hitherto 
