602 RHYNCHOPHORA. 
white spot on the fifth interstice below the base, their surface also rather closely set with short, semierect, 
setiform scales. Head rugulosely punctate, transversely depressed above the eyes, which are well- 
separated; rostrum strongly curved, reaching to about the middle of the intermediate cox, rugulosely 
punctate and obsoletely carinate, finely punctate at the tip, the apical half smoother in the 9 , the antennee 
inserted at or a little beyond the middle. Prothorax short, rounded at the sides posteriorly and rapidly 
narrowing anteriorly, feebly constricted in front, deeply bisinuate at the base; densely, finely punctate. 
Scutellum small. Elytra much wider than the prothorax, subparallel at the base, the humeri rounded ; 
punctate-striate, the interstices feebly convex. Beneath sparsely punctate. Mesosternum U-shaped, the 
walls hollowed at about the middle. Legs short; femora unidentate. 
Length 32-4, breadth 2-21, millim. (¢ @ :) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Three specimens. In this insect the elytra have each a small, sharply-defined, white 
spot on the outer part of the disc below the base (much as in the Venezuelan 
Heterobothrus bipustulatus, Faust), and the prothorax is very short and much narrowed 
anteriorly. Cryptorrhynchus verruca (Fabr.) is similarly marked. 
21. Tyrannion breviculus, sp. n. (Tab. XXIX. fig. 21.) 
Short ovate, shining, nigro-piceous or black, the head and the anterior portion of the prothorax usually in part 
_ rufo-piceous, and the elytra and legs sometimes mottled with the same colour; clothed with small inter- 
mixed greyish (or fulvous) and black scales, the elytra each with a small whitish spot on the disc towards 
the apex, the scutellum ochreous or fulvous, the vestiture of the under surface and legs flavo-cinereous ; 
the prothorax and elytra also somewhat thickly set with rather long, semierect, coarse, black and pallid 
sete, which become more crowded on the elevated portions of the surface and are clustered into a 
conspicuous crest on the second elytral interstice at about the middle. Head semicircularly flattened and 
rugulosely punctate above the eyes, the latter prominent, somewhat angular above, coarsely facetted, 
and narrowly separated; rostrum stout, strongly curved, nearly reaching the metasternum, rugulosely | 
punctate and obsoletely tricarinate, finely punctate at the tip, the apical half smoother in the ©, the 
antenne inserted at (2) or ata little beyond (3) the middle, joint 2 of the funiculus shorter than 1, 
the club ovate, acuminate. Prothorax short, rounded at the sides, constricted and greatly narrowed in 
front, deeply bisinuate at the base; densely punctate, the disc feebly binodose.  Scutellum rounded, 
prominent. Elytra much wider than the prothoras, short, flattened on the disc anteriorly, narrowing 
from the base, the latter strongly sinuate, the humeri rounded, prominent; punctate-striate, the interstices 
punctulate, more or less convex, 2 swollen at the middle and 3 slightly raised at the base (the dorsal 
strie in consequence sinuate). Beneath closely punctate. Legs rather slender 3 femora feebly or 
obsoletely unidentate. 
Length 3-33, breadth 12-2 millim. (¢ 9 -) 
Hab. Panama, Bugaba, Volcan de Chiriqui (Champion). 
Twelve specimens, varying in colour. This is one of three very closely allied forms 
inhabiting the same region, and mainly distinguishable by the nigro-variegate upper 
surface and the short crest of black sete at the middle of the second elytral interstice. 
22. Tyrannion agnatus, sp. n. (Tab. XXIX. fig. 22.) 
Very like 1. breviculus, but with the vestiture fulvous, slightly mottled with black ; the third elytral interstice 
swollen at the middle and with a narrow, oblique, ontwardly-directed, faint whitish streak at some 
distance below the base, the second interstice without a crest of black sete; the rostrum a little longer, 
‘the antenne inserted nearer the tip in the ¢. ‘ 
Length 33-33, breadth 2-275 millim. (¢ 2 .) 
