536 RHYNCHOPHORA. 
densely, rather coarsely punctate. Scutellum oblong, convex, smooth. Elytra elongate-subtriangular, 
a little wider than the prothorax at the base, the humeri rounded; with rows of coarse, oblong, 
subquadrate punctures, the interstices almost smooth, the alternate ones becoming narrowly costate 
towards the apex. Beneath coarsely, densely punctate. Femora stout, clavate, unidentate. Tibi 
somewhat curved, the intermediate pair hollowed externally before the apex, the anterior pair mucronate 
at the inner apical angle. Tarsi rather narrow, the third joint strongly bilobed. 
Length 102, breadth 44 millim. (¢?) 
Hab. Nicaragua, Chontales (Janson). 
One rather worn specimen. ‘The vestiture in this species does not form definite 
markings, but appears to be condensed into irregular patches separated by almost 
bare spaces, but this may be due to rubbing. 
4. Atrichis nubilans, sp.n. (Tab. XXVI. figg. 21, 21a, 2.) 
Elongate-ovate, robust, shining, black, the antennze obscure ferruginous; thickly clothed with intermixed, 
coarse, fulvous and whitish scales, the latter condensed on the elytra into several scattered patches and a 
rather broad irregular submedian fascia, which extends upwards laterally t6 the humeri, the scales on 
the prothorax rather large, the upper surface and legs also with scattered short decumbent sete. Head 
densely punctate, the eyes transverse, rather prominent, and somewhat narrowly separated; rostrum 
very stout, curved, a little longer than the prothorax, dilate, depressed, rugosely punctate, and sharply 
carinate at the base, for the rest sparsely punctate, smooth along the middle, the antennz inserted at 
two-fifths from the base, joint 2 of the funiculus much shorter than 1, 3-7 together about as long as the 
oblong, acuminate club. Prothorax transverse, the sides rounded and converging anteriorly and parallel 
behind ; densely punctate. Scutellum oblong, convex, smooth. LElytra a little wider than the prothorax, 
moderately long, very gradually narrowing from the base, the humeri slightly swollen ; coarsely seriate- 
punctate, the interstices punctulate, 3, 5, 7, and 9 narrowly costate throughout. Beneath coarsely, 
densely punctate. Femora very stout, clavate, sharply unidentate. Tibie rather broad. 
Length 10, breadth 44 millim. ( 2.) 
- Hab. Panama, Bugaba (Champion). 
One specimen. Very like A. semicostatus, but with the elytra more parallel and 
the alternate interstices costate throughout, the antennal club shorter, and the 
punctuation of the prothorax not so coarse. The eyes are similarly formed in the two 
species. 
ELPINUS, gen. nov. 
Rostrum cylindrical, widened at the base; eyes oval, transverse, rather prominent, well-separated ; antenne 
with the funiculus 7-jointed, joints 1 and 2 elongate, the club ovate and compact; prothorax with the 
ocular lobes almost obsolete ; scutellum prominent ; elytra elongate, very little wider than the prothorax, 
their lower margin feebly sinuate ; rostral canal rather narrow, reaching the front of the metasternum ; 
metasternum moderately long, the episterna very broad; ventral segment 2 a little longer than 3 or 4; 
femora dentate, sublinear, the posterior pair not reaching the apex of the elytra; tarsi with the bilobed 
third joint very broad and nearly as long as the first and second united, the claws long and simple. 
This genus is closely related to Atrichis, but differs from it, and from the other 
allied forms, in the greatly developed third tarsal joint. 
1, Elpinus palmatus, sp. n. (Tab. XXVI. figg. 22, 22a, b, 2.) 
Elongate, narrow, black, the antenne and the terminal joint of the tarsi ferruginous; thickly clothed with 
rather coarse, intermixed, pale brown and whitish scales, the latter condensed into a median line on the 
