208 RHYNCHOPHORA. 
the basal margin of the prothorax and the legs clothed with hair-like white scales. Head sparsely 
punctate; rostrum rather slender, very sparsely, faintly punctate, the antenne inserted at the middle, 
joints 3-7 of the funiculus widening outwards, more or less transverse, 1 nearly as long as 2-4 united, 
the club oblong-ovate and rather small. Prothorax convex, broader than long, much narrowed in front, 
the sides strongly rounded anteriorly and parallel behind ; very sparsely, minutely punctate, smooth along 
the middle. Elytra very gradually narrowing from a little below the base, the apices divergent and 
somewhat produced ; sharply striate, the striee with oblong scattered punctures, the interstices flat, with 
small, widely-scattered clusters of fine squamigerous punctures, for the rest smooth. Ventral segments 
very sparsely, finely punctate. 
Length 33-53, breadth 13-13 millim. (¢ 9.) 
Hab. Panama, Bugaba (Champion). 
Eight specimens, 
MADOPTERUS. 
Madopterus, Schénherr, Gen. Cure. iii. p. 734 (1836) ; Lacordaire, Gen. Col. vii. p. 244. 
A Tropical-American genus, including two known forms, a third being now added. 
Madopterus is so closely related to Nertus that it must be referred to the same section 
of the Barina. The tarsal claws at first sight appear to be single. 
1. Madopterus cylindricus. (Tab. XII. fig. 7.) 
Madopterus cylindricus, Boh. in Schénh. Gen. Cure. viii. 1, p. 81’. 
Hab. Mexico}, 
The type of this insect (apparently a female) has been communicated by Dr. Sjéstedt. 
It is very like the following species, but has the upper surface almost bare (a line of 
white scales along the basal margin of the prothorax excepted), and the oblique 
depression below the base of the elytra deeply impressed. 
2. Madopterus conradti, sp.n. (Tab. XII. figg. 8, 8a, 3.) 
Elongate, narrow, somewhat flattened above, shining, black; above (a broad bare space down the middle of 
the prothorax, extending from the apex to very near the base, excepted) rather sparsely, and the under 
surface thickly, clothed with elongate, coarse, yellowish-white or ochreous scales, those on the legs finer 
and hair-like. Head closely punctate, with a small narrow fovea between the eyes ; rostrum cylindrical, 
rather slender, almost straight, as long as the prothorax, sparsely punctate, smoother in the- 2, the 
antenne inserted beyond the middle, joint 1 of the funiculus about as long as 2 and 3 united, the club 
large, flattened, and oblong-ovate in the ¢, smaller in the 9. Prothorax much longer than broad, 
obliquely narrowing from near the base, sparsely punctate, with a narrow, ill-defined, smooth space down 
the middle. LElytra less than twice the length of the prothorax, parallel in their basal half ; deeply 
punctate-striate, the interstices narrow, convex, irregularly and rather coarsely uniseriate-punctate. 
Beneath closely punctate ; ventral segments 1 and 2 with a flattened bare space down the middle in 
the g. Femora unarmed. Tarsal joints 2 and 3 broadly dilated ; 
Length 62-63, breadth 2, millim. (¢ 9.) 
Hab. GuateMata, Coban in Alta Vera Paz (Conradt). 
claws connate to near the tip. 
One pair. Closely related to the Mexican I. cylindricus, but clothed with coarse, 
whitish or ochreous, elongate scales above and beneath. 
