380 MEMOIRS ON THE COLEOPTERA 



sides become sinuately oblique to the apex; base broadly, strongly 

 lobed, deeply grooved along the apex of the lobe; median line more or 

 less feebly impressed; punctures small and remote; elytra longer 

 than wide, subparallel and broadly arcuate at the sides, only very 

 little wider than the prothorax, finely, in great part obsoletely, 

 punctulate, with a few fine incised longitudinal lines inwardly, the 

 edges posteriorly with some fine, sharp, transverse rugulosity; 

 pygidium rather longer than wide, convex, shining, tumid near the 

 lower rounded edge and with bioblique and rather coarse incised 

 wavy lines, tomentose laterally and more or less along the base; 

 legs moderate; hind tarsi barely longer than the tibiae; sterna and 

 sides of the abdomen, except posteriorly, with large areas of tomen- 

 tum, disintegrated by the incised linear sculpture. Length 6.8-8.2 

 mm.; width 3.25-4.2 mm. Florida. Two examples, .floridana Csy. 



Individuals of this species seem to be rare and I do not know the 

 sex of the two at hand, although it might be inferred that they are 

 males; the antennal club is notably small, much shorter than the 

 stem. 



Trigonopeltastes Burin. 



Although at present suppressed in our lists, this is an amply 

 valid genus, the sexual differences in the anterior tibiae being very 

 pronounced, which character is reinforced by the general habitus 

 of the body, this being very different from that of Trichiotinus 

 because of the opaque elytra, peculiarly maculate with black, and 

 the reversed delta-like triangle of tomentum on the pronotum, 

 which seems to be a rather constant and characteristic feature of 

 the genus, though sometimes imperfect and lacking the transverse 

 bar as in the preceding genus, from which Trigonopeltastes differs 

 in its lO-jointed antennae and very long tarsi. The species are 

 numerous in Mexico, but we have only one so far as discovered as 

 follows : 



Body slightly ventricose, feebly convex and densely opaque throughout 

 above and on the head, the pygidium, except at apex, and the entire 

 under surface, with exception of the median part (9), or a small 

 median reflexed spot at the apical margin of the fourth ventral 

 segment (cf ), covered with an extremely dense crust of pale yellow 

 tomentum; head deep black, the clypeus as long as wide, shorter in 

 the female, parallel, rounded at the sides, testaceous, black medio- 

 basally, with a spot of yellow tomentum at base near each side (cf ), 

 the apex bilobed; front with a transverse bar of tomentum, the sur- 

 face from this bar to the clypeal apex with minute hairs, which are 

 wanting behind it; at base, there is more or less tomentum toward the 

 sides; vertex velvety-opaque and sculptureless (cf ), or less dull and 



