SCAPTOLENUS. 567 



disc ; feebly sulcate, with the interstices somewhat convex, and rather coarsely and moderately thickly 

 punctate. 

 Length 15|-16, breadth 5^-5| millim. 



Hab. Costa Rica, Rio Sucio (Eogers). 



Two males. This insect approaches S. revestUus ; but it has the hairs on the head 

 and thorax longer and almost black, the thorax relatively narrower, more rounded at 

 the sides, and more sparsely and less coarsely punctate, the elytra much more feebly 

 sulcate and more thickly punctured. The more rounded sides of the thorax, the 

 subparallel elytra, and the rather more distinctly serrate antennas separate it from 

 S. candezei. In one specimen the thorax is very deeply sulcate down the middle, but 

 this is probably accidental. 



17. Scaptolenus brevicollis. (Tab. XXV. figg. 15, 15 a, s .) 



$ . Elongate, moderately broad, a little narrowed behind, sbining ; head, prothorax, and scutellum black, the 

 antennas brown, with the three basal joints black, the mandibles castaneous, black at the tip, the elytra 

 piceous, the under surface black, the apex of each ventral segment fulvous, the legs black, the femora 

 flavous, except at the tip ; the head, prothorax, and scutellar region sparsely clothed with very long erect 

 brownish and fulvous hairs, the presternum and breast thickly clothed with long fulvous hairs, the femora 

 and ventral segments also with long hairs, the rest of the elytra sparsely pubescent, the margins fimbriate. 

 Head sparsely, coarsely, unequally punctate, transversely depressed between the eyes, the latter com- 

 paratively small; maxillary palpi rather stout, the apical two joints about equal in length; mandibles 

 short and stout, abruptly incurved at the middle ; antennas moderately long, rather stout, very feebly 

 serrate, joint 3 twice as long as 2, 4 twice as long as 3, 11 obliquely truncate at the apex. Prothorax 

 very short, twice as broad as long, rounded and somewhat dilated at the sides anteriorly and slightly 

 constricted behind, with long, slender, divergent hind angles ; the surface thickly, coarsely punctate. 

 Scutellum thickly punctured. Elytra three and two-fifths longer than the head and prothorax, and much 

 wider than the latter, gradually narrowing posteriorly, moderately gibbous at the base and flattened on 

 the disc, dehiscent at the suture behind ; distinctly striate from a little below the base to near the apex, 

 the striae crenate posteriorly, the interstices feebly convex and somewhat thickly, coarsely punctate. 



Length 16, breadth 6 millim. 



Hab. Mexico, Xucumanatlan in Guerrero 7000 feet (E. E. Smith). 



One specimen. Allied to S. ruficornis, but differing from it in the stouter and less 

 elongate antennae, the stouter palpi, the more dilated thorax, which is clothed with 

 much longer and more erect hairs, the distinctly striate elytra, &c. The thorax is 

 much shorter than in S. candezei and S. nigriceps. 



18. Scaptolenus gehini. (Tab. XXV. figg. 16, 16 a, s .) 



^ . Scaptolenus gehini, Chevr. Ann. Soc. Ent. Fr. 1874, pp. 509 \ 523 2 . 



c? . Elongate, rather narrow, subparallel, shining ; head and scutellum black, the mandibles castaneous, black 

 at the tip, the antennas brown, darker at the base, prothorax piceous or obscure rufo-castaneous, the 

 elytra piceous or brown, the breast testaceous or obscure testaceous, the ventral segments, and also the 

 femora, flavous, the tibia? and tarsi piceous or black ; the head, prothorax, scutellar region, breast, and 

 femora somewhat thickly clothed with moderately long fuscous hairs, the ventral segments with scattered 

 hairs, the rest of the elytra sparsely pubescent, the margins fimbriate. Head sparsely, irregularly, rather 

 coarsely punctate, the eyes moderately large and prominent ; maxillary palpi more or less infuscate, the 

 apical joint slightly longer than the preceding ; mandibles short and stout, abruptly bent inwards at the 



