12 RHUYNCHOPHORA. 
white), fulvous, and dark brown, the whitish scales often condensed into rows of spots; the legs 
cinereous, the femora fusco-annulate. Head densely, minutely punctate, the eyes subcontiguous ; 
rostrum closely punctate and carinate at the base, almost smooth in its outer half; joint 2 of the 
funiculus considerably longer than 3. Prothorax transverse, subconical, with two large shallow 
depressions on the middle of the disc and one in the centre in front; densely, minutely punctate and 
feebly carinate. Elytra very much wider than the prothorax, rounded-triangular, broadly transversely 
depressed below the base, the humeri swollen, the apices each produced into a blunt triangular tooth ; 
punctate-striate, the punctures rather coarse on the basal half, the third and fourth striz strongly sinuate, 
the interstices densely, minutely punctate, 3 swollen and dilated at the middle. Beneath closely, finely 
punctate; ventral segment 1 broadly depressed down the middle, 5 sinuato-truncate at the apex in 
the g. 
Length 83-113, breadth 44-6), millim. (¢ 2.) 
Hab. Mexico, Toxpam in Vera Cruz (Sallé), Cerro de Plumas (Hége), Teapa 
(H. H. Smith); Guatemaua, Panzos and Panima in Vera Paz, San Isidro, Cerro Zunil, 
Las Mercedes (Champion); Nicaragua, Chontales (Belt, Janson); Costa Rica, San 
José (Liolley). 
This insect is distributed in collections under Chevrolat’s MS. name. It varies 
greatly in the colour of the vestiture, the cinereous scales being sometimes mainly 
condensed into a large patch on the disc of the elytra, and sometimes into numerous 
spots or streaks. From P. trifoveatus, the only other Central-American form with a 
trifoveate prothorax, the present species may be separated by the non-fasciate elytra 
and the oblong prominence on the third interstice. 
3. Piazurus caprimulgus. (Tab. I. figg. 19,19 a@; 20, 21, vars.) 
Rhynchenus caprimulgus, Oliv. Ent. v. no. 83, p. 177, t. 17. fig. 209°. 
Piazurus caprimulgus, Schonh. Gen. Cure. iv. p. 679°; Heller, Stett. ent. Zeit. 1906, p. 33°. 
Hab, Muxico, ‘Toxpam and Santecomapan in Vera Cruz (Sallé) ; British Honpuras 
(Blancaneaux) ; Nicaragua (Sallé), Chontales (Belt, Janson, Richardson) ; Costa Rica, 
Reventazon, Santa Clara (Liolley), Miravalles (Underwood); Panama, Bugaba, Volcan 
de Chiriqui (Champion).—Co.LomBia; GUIANA, Cayenne ?; AMAZONS. 
Found in abundance at Bugaba and in some numbers at Chontales. Three forms 
occur in Central America :— 
a. The prothorax and elytra with small scattered white spots, those on the elytra mostly placed along the 
edges of the black markings. (Fig. 19.) 
Costa Rica (Miravalles), Panama, and 8. America. 
a) 
6. The black saddle-shaped patch on the elytra larger and extending up the suture to near the base, the white 
spots behind it larger and more or less coalescent, those on its anterior edge very small and inconspicuous. 
(Fig. 20.) 
Mexico and British Honduras. 
y. The black saddle-shaped patch on the elytra less indented along its anterior and posterior edges, the white 
spots almost obsolete and altogether wanting on the prothorax. (Fig. 21.) 
Piazurus transversus, Faust, in litt. 
Nicaragua and Costa Rica (Reventazon, Santa Clara), 
P. caprimulgus is easily recognizable by the very large conical tubercle near the base 
