456 RHYNCHOPHORA. 
Prothorax transverse, arcuately narrowing from the base, feebly constricted in front, obsoletely bifoveate 
on the disc; closely pitted with rather coarse rounded punctures, the interspaces raised and reticulate. 
Elytra much wider than the prothorax, subtriangular, the humeri somewhat prominent, the apices each 
armed with a short dentiform prominence; finely punctate-striate, the striz becoming wider and more 
coarsely punctured anteriorly, the interstices closely, transversely rugose and feebly uniseriate-punctate, 
narrow at the base, the fifth longitudinally raised at its point of termination. Beneath very coarsely, 
the ventral segments more sparsely and finely, punctate; first ventral segment slightly depressed down 
the middle. Prosternum simply bifoveate in front. Femora very rugose. 
Length 21, breadth 14 millim. (<¢.) 
Hab. Guatemaua, Chiacam in Alta Vera Paz (Champion). 
One specimen. The rugose sculpture, the somewhat dilated humeri, the more 
divergent, dentiform, apical prominences, the simply bifoveate prosternum, and the 
almost glabrous surface separate this species at a glance from C. plurisetosa. 
3. Chrysobaris cothurus, sp. n. (Tab. XXII. figg. 7, 74, 3.) 
Very like C. corrosa, neous in colour; the prothorax more constricted in front and deeply bifoveate on the 
disc ; the elytra strongly undulate, obliquely compressed at the sides below the humeri (the margins thus 
appearing sinuate), the interstices less rugose, polished, and more distinctly uniseriate-punctate, narrowly 
costate towards the base and apex, the fifth more raised at its point of termination, the apical pro- 
tuberances less abrupt ; the prosternum simply bifoveate in front. 
Length 23, breadth 11 millim. (¢.) . 
Hab. Mexico, “Sierra de Durango ” (//6ge). 
One specimen, kindly presented to us by Signor Solari. The polished uneven 
interspaces of the elytra give a glittering appearance to the upper surface of this 
insect. ‘The locality Durango requires confirmation. 
CHALCOBARIS, gen. nov. 
Mandibles short, decussate; rostrum long, stout, arcuate, separated from the head by a transverse groove ; 
antenne (fig. 8a) with a stout, elongate-ovate, densely pubescent club, which is longer than joints 2-7 
of the funiculus united, the latter transverse, closely articulated, and widening outwards ; prothorax 
deeply sinuate at the base, conical, the sides forming a continuous outline with the oblique humeri; 
scutellum small, rounded, free; elytra subcordate; pygidium exposed, declivous; prosternum with two 
deep fovew near the apex, and a fine longitudinal ridge extending down from each of them exteriorly to the 
coxe, the median space flattened, the basal process broadly truncate; anterior coxe separated by nearly 
their own width ; femora unarmed, shallowly sulcate; tibiz almost straight; tarsal claws minute, connate 
at the base; body oblong-subrhomboidal, metallic, almost glabrous. 
Type, C. panamensis. 
The type of this genus has the prosternal structure of Chalcobaris, but the tarsal 
claws are minute, the rostrum and antennal club are elongated, and the body is 
differently shaped. Pseudobaris lucida and P. lucens approach C. panamensis, but 
they have a sulcate, non-foveate prosternum, long tarsal claws, &c. 
1. Chalcobaris panamensis, sp.n. (Tab. XXII. figg. 8, 8a, 2.) 
/@neous, shining. Head densely punctate; rostrum a little longer than the head and prothorax, moderately 
curved, densely, fively punctate at the base and much smoother thence to the tip, the antenne inserted 
