146 HETEROMERA. 
and rough punctuation of the thorax and elytra and the rather prominent raised lines 
on the latter this species differs from all others of the genus here recorded. ‘The raised 
anterior margin of the thorax is triangularly prolonged inwards at the middle. The 
last joint of the maxillary palpi is elongate aad subcultriform. The dense punctuation 
of the thorax and elytra, that of the thorax much finer, differently formed palpi, bifid 
mandibles, and other particulars distinguish it from Oxacis pilosa. 
3. Copidita trifoveata. (Tab. VII. fig. 3, 2.) 
Elongate, thickly clothed with rather coarse yellowish pubescence; the head and prothorax slightly shining, 
orange-yellow ; the elytra opaque, flavo-testaceous. Head closely and finely punctured, the eyes and 
the tips of the mandibles black, the eyes coarsely granulated and feebly emarginate; antenne fusco- 
testaceous, the basal joints piceous-brown, very long, slender, joints 1 and 3 equal in length, 1] constricted 
a little beyond the middle; prothorax much longer than broad, the sides rounded anteriorly, strongly 
constricted at the middle, and thence to the base rapidly converging, the disc transversely concave in 
front, with a large U-shaped depression in the middle behind, a very large and deep oblique depression 
on either side anteriorly, and a fine median ridge towards the apex, the apical and basal margins raised, 
the hind angles rather prominent, the surface very closely and finely punctured, the punctures rather 
coarser on the disc ; elytra thickly, shallowly, and finely punctured, and with two raised lines or coste 
on the disc extending from the base nearly to the apex ; beneath pale flavo-testaceous, densely and finely 
punctured ; legs slender, flavous, the tips of the femora and the tibiz and tarsi piceous-brown. 
Length 9 millim. (<¢.) . 
Hab. Nicaragua, Chontales (Belt). 
One example only. In this species the thorax is long, much narrowed behind, 
and has three deep depressions, and its basal and apical margins are raised; the elytra 
have two distinct raised lines on the disc; the apical joint of the maxillary palpi is 
subcultriform ; and the mandibles are bifid. 
¢ 
4, Copidita maculicollis. (Tab. VII. fig. 4, ¢.) 
Elongate, thickly clothed with rather coarse pubescence; the head and prothorax slightly shining, testaceous 
or flavo-testaceous, the former broadly infuscate between the eyes, the latter with the anterior half 
marked with piceous or brown (this colour surrounding two or three flavous spots on each side of the 
disc and divided along the middle by an extension of the ground-cclour, sometimes extending along the 
lateral margin and on either side of the disc to the base); the elytra opaque, brownish-testaceous or 
brown. Head finely and thickly (in some specimens more coarsely) punctured, the eyes and the tips of 
the mandibles black, the eyes coarsely granulated, the oral organs testaceous or fusco-testaceous ; last joint 
of the maxillary palpi long and cultriform, much longer in the male than in the female; antenne long 
and slender, testaceous with the outer half of each joint (the first excepted) fuscous or piceous, or fuscous 
with the extreme base of each joint testaceous, joints 1 and 3 equal in length, 3 twice as long as 2, 11 
constricted at the middle in both sexes; prothorax longer than broad, the sides rounded anteriorly, 
feebly sinuate or emarginate just before the apex, constricted at the middle, and thence to the base con- 
verging, the disc depressed in the centre before the base and with a large and deep depression on each side 
before the middle, the basal and apical. margins raised, the surface very closely and finely (in some 
specimens very densely) punctured, a narrow space along the middle of the disc smoother in some examples ; 
elytra densely and finely punctured, and with three raised lines on the disc and one at the sides, the suture 
also raised; beneath densely punctured, testaceous; legs testaceous, the apices of the femora fuscous or 
piceous, the tibize and tarsi sometimes brownish. 
Length 73-9 millim. (¢ 2.) 
