316 RHYNCHOPHORA. 
prosternum sulcate, the legs more slender. Near NV. candidulus, the vestiture much 
sparser above, the prothorax more coarsely punctate, the elytral strie deeper, the 
interstices uniseriate-punctate, the prosternal sulcus shallower. 
9. Nicentrus femoralis, sp.n. (Tab. XVI. figg. 29, 29a.) 
Elongate-elliptic, narrow, flattened above, dull, nigro-piceous; above rather sparsely and uniformly clothed 
with small, narrow, white scales, which are arranged in a single line down each elytral interstice ; the 
vestiture of the under surface coarser and denser, and also white. Head closely punctate, the eyes 
separated by about half the width of the rostrum; rostrum stout, arcuate, about as long as the pro- 
thorax, rugulosely punctate at the sides, for the rest shining and almost smooth, the antenne inserted at 
about the middle, Prothorax nearly as long as broad, gradually and arcuately narrowing from the base 
forward ; closely, somewhat coarsely punctate. Elytra oblong-subtriangular, sharply, narrowly striate, 
the interstices rather coarsely uniseriate-punctate. Beneath densely punctate. Prosternum sulcate, 
tumid in front of each anterior coxa. Femora sulcate along their outer half beneath, the anterior pair 
feebly dentate at the apex behind, the intermediate pair somewhat produced at the inner apical angle. 
Tibiee sharply unguiculate. 
Length 24, breadth 1 millim. (9?) 
Hab. Panama, Volcan de Chiriqui (Champion). 
One specimen. Less parallel-sided than WV. lobatus and NV. macilentus, the vestiture 
rather sparse and uniformly arranged above, the rostrum shorter, the prosternum tumid 
in front of each anterior coxa, the elytral interstices more coarsely punctate. 
10. Nicentrus lobatus, sp. n. (Tab. XVI. figg. 30, 30a, 2.) 
Elongate, narrow, flattened above, piceous; sparsely clothed with small, narrow, brownish-white scales, the 
vestiture condensed into three faint vitte on the prothorax, a spot on the scutellum, various streaks on- 
the basal portion of the elytra, and a transverse patch on the disc towards the apex; the under surface 
densely clothed with whitish scales. Head densely punctate, squamose between the eyes; rostrum 
arcuate, moderately stout, about as long as the prothorax, finely lineato-punctate, the antennee inserted 
near the middle. Prothorax nearly as long as broad, rounded at the sides anteriorly, feebly constricted 
in front; densely, finely punctate. Scutellum rounded. Elytra long, a little wider than the prothorax, 
subparallel in their basal half, transversely depressed below the base; finely punctate-striate, the inter- 
stives rugulosely punctate, 3 and 5 slightly wider than the others. Beneath densely punctate. Prosternum 
sulcate. Anterior cox narrowly separated. Femora sulcate in about their outer third beneath, the 
anterior pair dentate at the apex behind, the intermediate pair dentate at the apex in front. 
Length 3, breadth 1 millim. (@.) 
Hab. Nicaragua, Chontales (Janson). 
One specimen, rather worn. In this insect the anterior and intermediate femora 
have one of the two lobes at their apex produced into a sharp tooth beneath, as in 
many Zygopides. 
11. Nicentrus macilentus, sp. n. 
Elongate, subparallel, flattened above, nigro-piceous or piceous; above sparsely clothed with narrow whitish 
scales, which are condensed into three vittz on the prothorax and a single line down each elytral inter- 
stice ; the vestiture of the under surface denser and also white. Head closely punctate ; rostrum (3d) 
rather stout, curved, not longer than the prothorax, striato-punctate, (2 ) slender, longer, straighter, and 
almost smooth, the antenne inserted at about the middle, the antennal club ovate. Prothorax as long as 
