358 RHYNCHOPHORA. 
pubescence; rostrum with grey mesial vitta, which is represented on head by a narrow and irregular 
mesial streak; an indication of a mesial vitta also on pronotum. 
Rostrum twice as broad at base as mesially long. Occiput longitudinally wrinkled, with a very thin mesial 
carina. Pronotum nearly twice as broad as long, feebly depressed behind, carina concave in middle. 
Elytra short, depressed at suture, lines of punctures impressed; interspaces somewhat convex, especially 
the third and fifth before apex; basal and humeral callosities rather distinct. Pygidium not longer than 
basally broad, rounded at apex ; anal sternite emarginate. Prosternum as long before coxa as the latter 
is wide. 
Length 84-94 millim. 
Hab. Nicaragua, Chontales (Janson). 
Two females. 
7. Phenithon gravis. 
Phenithon gravis, Fahr. in Schoenh. Gen. Spec. Cure. v. p. 262. n. 7 (1839) ’. 
The Costa Rican and Panama examples are more slender than South-American specimens of P. gravis. 
The vittee of the pronotum are narrower, and the pygidium is very narrowly bordered with grey, bearing 
also a very narrow grey mesial stripe. 
Hab. Costa Rica (Biolley); Panama, Volcan de Chiriqui (Champion). —Sovtu 
America, Colombia, Venezuela, Brazil1, Bolivia (Mus. Tring). 
The mid tibia of the ¢ of this species bears a tooth at the tip and the anal 
sternite is deeply impressed at the apex. 
8. Phenithon bajulus. 
Phenithon bajulus, Jekel, Ins. Saund. i. p. 142 (1855) °. 
One ¢ only. This sex of P. bajulus possesses a remarkable structure on the abdomen: there are on 
each of the second and fourth segments two tubercles composed of hard black glossy spines, which 
remind one of the spines found on the mid coxa and femur of the males of some species of Memotrichus 
and on the mesosternum of Habrissus. 
Hab. Panama, Volcan de Chiriqui (Champion).—SovutH America, Colombia, 
Cayenne !, Amazons, Bolivia. 
9. Phznithon uncinatus, sp. n. 
Q. Resembling P. bajulus, but smaller. Pronotum much shorter, being half as broad again as long, with 
three broad luteous vitte, the mesial one narrowing to a point in front, the lateral vitta oblique, more 
lateral than in P. bajulus, reaching base of pronotum at angle; carina slightly curved forward at sides 
the lateral carina being practically absent. Elytra more cylindrical than in P. bajulus, pattern different; 
a narrow grey sutural vitta from base to middle, continued along basal edge to shoulder, then Panning 
backwards halfway to middle; posteriorly the sutural vitta curved sideways to the fifth interspace, where 
it touches a curved line which extends from before the middle of the limbal edge to the fifth interspace 
ending in this interspace before the apical declivity ; an irregularly ovate apical spot luteous neither 
touching sutural nor apical edges. Pygidium longer than broad, with a broad grey vitta on each side 
which becomes gradually narrower apically ; no grey mesial line. Tarsi much longer than in P. bajulus, 
the fore tarsus being longer than the fore tibia ; femora and bases of tibie bright rufous. 
Length 43 millim. 
Hab. Nicaragua (Boucard, in Mus. Tring). 
One female. 
