194 Memoirs on the Coleoptera 



Body nearly as in the preceding in color, lustre, sculpture and ornamentation, the 

 beak ( 9 ) almost similar, relatively not quite so long and more coarsely 

 punctate, more evenly tapering from the basal gibbosity to the apex, and 

 with the antennse more elongate and red-brown, with dark club; prothorax 

 longer, a third wider than long, the sides more feebly converging from the 

 base and less arcuate, gradually broadly rounding and strongly converging 

 anteriorly to the better marked tubulation ; white squamules along the middle 

 forming a loose but entire line; elytra nearly similar in form and proportion, 

 but only a little more than twice as long as the prothorax, the grooves coarser, 

 the coarse and confused interstitial punctures equally conspicuous; on the 

 under surface the scales and slender squamules are uniformly whitish through- 

 out and, on the first two ventrals, are not abruptly condensed in a rather 

 small lateral spot on each, but are very gradually a little coarser and denser 

 laterally. Length 4.8-5.1 mm.; width 2.6-2.75 mm. Brazil (Chapada). 

 March and October. Two female specimens comptus n. sp. 



It seemed at first that the species described above under the 

 name cribricollis might be olfersi Germ., but that is described as 

 being opaque, with gibbous base of the beak and piceous tibiae, 

 which characters are in no way substantiated in cribricollis. I am 

 not quite certain of the status of the types of duplicates and amcenus; 

 one is a female and the other male. They resemble each other 

 very closely, and were taken at very nearly the same time and 

 place, but in no other species does the relative coarseness of the 

 pronotal punctures differ sexually; and there are marked differences, 

 besides, in the density of the scales at certain parts of the under 

 surface, and also a rather conspicuous difference in the ornamenta- 

 tion of the elytra, the second, fifth and sixth intervals being in part 

 densely and pallidly squamose in amcenus, besides the regular vittse 

 of the third and fourth. Examining good series of other species, 

 such as distinctus, no marked variability in the ornamentation is 

 observable, and I therefore leave the forms mentioned under the 

 specific relationships proposed above, at least provisionally. 



The species described above as regalis, I had labeled for many 

 years "westwoodi," but on reading Boheman's description, so many 

 disagreements become evident that I cannot regard it as that 

 species, where the beak is said to be almost as long as the body, 

 the antennae partially ferruginous, the smooth thoracic line elevated 

 and the elytra "thorace fere duplo longiora." Eximius and 

 comptus might be regarded as allied to trigrammicus, but the beak 

 there is said to be strongly arcuate. There is but little sexual 

 difference in the beak in eximius, but the differences of this nature 

 in regalis are extraordinary, and only to be equaled in Conoproctus 

 of the Madarini. The beak is very much shorter and less arcuate 

 in the female than in the male. 



