432 RHYNCHOPHORA. 
punctate. Prosternum with the median sulcus extending to the apex, deep, sharply margined, the 
margin abruptly angulate behind the coxe, the hollowed basal process short, truncate behind. Anterior 
femora with two teeth (one on each edge of the sulcus), the others with one tooth only. 
Length 43, breadth 254, millim. 
Hab. GuatemaLa, Las Mercedes 3000 feet (Champion). 
One male. Not unlike the common P. undulata, but easily recognizable by the 
longer prosternal sulcus, the sharp carina on the lower face of the rostrum (an unusual 
character among the Barids), the dentate femora, &c. The inferiorly carinate rostrum 
(fig. 9 a), the longer sulcus and less developed basal process of the prosternum, &c., 
separate P. costirostris from P. oscillans. The small punctures at the base of the third 
elytral interstice doubtless bear scales when the insect is in fresh condition. 
11. Pseudobaris oscillans, sp. n. (Tab. XXI. figg. 10, 10a, 2, 3.) 
Oblong-ovate, very shining, black, glabrous above, the punctures of the under surface and legs each bearing a 
minute white scale. Head finely punctate, transversely depressed between the eyes ; rostrum ( ¢) stout, 
about as long as the head and prothorax, finely punctate, (2) longer, more strongly arcuate, and much 
smoother, the antenne inserted at (¢) or behind (@) the middle. Prothorax slightly broader than 
long, conical, feebly constricted in front; very sparsely, minutely punctate, smooth along the median 
line. Elytra transversely depressed before and behind the humeri, the basal margin prominent ; with 
fine, faintly punctured strie, the first almost or guite obsolete at the base and there represented by a line 
of minute punctures, the interstices broad, flat, narrowly costate on the apical declivity, each with a row 
of extremely minute scattered punctures. Beneath very coarsely, the abdomen sparsely and finely, 
punctate. Prosternum with the median sulcus deep, parallel-sided, and abruptly terminating between 
the coxe, the basal process flat and subtruncate. Legs rather slender; anterior femora bi-, the others 
uni-dentate. 
Length 4-451, breadth 12-2 millim. (¢ 2.) 
Hab. Panama, Volcan de Chiriqui 5000 feet (Champion). 
One pair. Very like Madarus astutus, but smaller, the rostrum of the female 
stouter, cylindrical, and not abruptly gibbous at the base, the femora sharply dentate, 
the apical interstices of the elytra costate, the basal process of the prosternum less 
developed, &c. Both insects have a prominent basal margin to the elytra. ‘The femora 
in the present species are sharply dentate, the two teeth on the anterior pair (fig. 10 0) 
being placed opposite one another, one on each edge of the sulcus. 
12. Pseudobaris octonotata, sp.n. (Tab. XXI. figg. 11, lla, 9.) 
Oblong-ovate, shining, black; the elytra each with four dense albo-squamose spots at the base, the one on 
the 3rd interstice larger and more elongate than those exterior to it; the punctures on the under surface 
and legs each bearing a hair-like white scale. Head finely punctate, transversely depressed between the 
eyes; rostrum arcuate, stout, nearly as long as the head and prothorax, closely punctate, in the @ 
smoother, longer, and more slender, the antenne inserted at about the middle. Prothorax transverse, 
rather convex, rounded at the sides anteriorly, constricted in front; closely, coarsely punctate. Elytra 
rounded-triangular, with sharply cut, narrow, feebly punctured strive; the interstices broad, fiat, 
narrowly costate at the apex, each with a row of fine, shallow, transverse punctures, 3 widened at the 
base. Beneath closely punctate, Prosternal sulcus straight, shallow, broad. Anterior and intermediate 
femora with a short tooth, 
Vength 23-34, breadth 11-13 millim. (¢ 2.) 
