22 Memoirs on the Coleoptera 



Lydamis Pasc. 



The species of this genus are rather numerous and I have not 

 seen the type named in the table. The body is rhomboidal, gener- 

 ally densely clothed with variegated scales, the beak evenly arcuate, 

 cylindric and strongly sculptured, the antennae medial, the first two 

 joints of the funicle rather elongate, subequal, two to four also more 

 or less elongate and decreasing gradually, the outer three short, the 

 club elongate-oval, gradually pointed and with its first segment 

 much less than half the mass. The scutellum is well developed, 

 transverse, flat, densely clothed and with its hind margin somewhat 

 sharply angulate. The ten species in my collection, all of which 

 seem to be undescribed, are as follows: 



Elytra with nearly uniform to confusedly mottled dense vestiture of more or less 



fulvous scales 2 



Elytra black, uniformly clothed with minute dense blackish squamules, crossed 



by two white fasciae — near basal and behind apical third 8 



2 — Larger species, not less than about 7 mm. in length 3 



Smaller species, only about 5 mm. in length 7 



3 — Elytra with very dense and virtually uniform covering of reddish-brown scales; 



antennal club oval 4 



Elytra with dense fulvous scales, mottled confusedly with black 5 



4 — Form rather broadly rhombic, piceous-black, the surface wholly concealed 

 above by the dense narrow fulvous scales, with feeble narrow oblique lateral 

 paler streaks and a darker sublateral area along the base on the pronotum, 

 the elytra with slight whitish mottling toward apex; scales of the under 

 surface dense and brownish-white, with a denuded space at the base of the 

 propleura laterally, the abdomen with a large shallow impression clothed 

 with brown scales continued to the apex, apparently similar in both sexes; 

 beak feebly arcuate, somewhat longer than head and prothorax, densely 

 punctate almost throughout, costulose and squamose, becoming smooth and 

 subglabrous distally; antennae submedial in both sexes, the first three funicu- 

 lar joints elongate; prothorax two-sevenths wider than long, the sides rather 

 feebly converging and broadly arcuate to the laterally constricted apex, 

 which is sinuate laterally and less than half as wide as the base, the basal 

 lobe narrow, not a sixth the total width; median line carinate; punctures 

 strong, very dense; scutellum parallel, twice as wide as long, densely squa- 

 mose, sharply cuspido-angulateatapex; elytra triangular, with feebly arcuate 

 sides, a third wider than the prothorax, the humeri rounded; striae deep, 

 moderate, somewhat inconspicuously punctate; intervals all flat, densely 

 punctate; femora stout, strongly dentate; tibiae fluted. Length (c?9) 

 9.0 mm.; width 5.4-5.6 mm. Brazil (Chapada). October. Three speci- 

 mens ferruginea n. sp. 



Form less broadly rhombic and rather smaller in size, similar in almost every 

 feature of sculpture and vestiture; beak still more obviously longer than the 

 head and prothorax, the antennae slightly beyond the middle in the type, 

 distinctly shorter than in the preceding, the club shorter, oval, more rapidly 

 pointed; prothorax shorter, two-fifths wider than long, the sides more rapidly 

 converging from the base; apex very much narrower than half the base, the 

 median lobe of the latter truncate and wider, more than a sixth the total 

 width; scutellum narrower, the apex more prolonged in a very acute and 

 more gradually attenuate cusp; ante-coxal parallel impression similar, densely 



