178 Memoirs on the Coleoptera 



slender beak, long slender porrect processes of the male and some- 

 what scanty uneven vestiture. 



Ladustes n. gen. 



This is a moderately large genus, agreeing with the preceding in 

 the density of sculpture and irregular disposition of the vestiture, 

 but it differs radically in the form of the beak and prosternum, 

 also in having no vestige of ante-coxal processes in the male. 

 The body is generally subrhombic-oval, the pronotum coarsely, 

 very densely punctate, with a smooth cariniform median line, and 

 the elytra are grooved and with strongly, very densely punctate 

 intervals. The beak is feebly arcuate, swollen and more squamu- 

 lose basally, strongly sculptured and with arcuate, bifid and moder- 

 ately decussate mandibles and is separated from the head by a 

 narrow deep sulciform impression. The antenna? are rather long 

 and slender, with the first funicular joint long, exceeding the next 

 two combined, the loose outer joints as in the preceding genus, and 

 the club is small and oval. The prosternum is flat, densely squa- 

 mose and separates the coxae by a fourth to about half their width. 

 The femora are slightly inflated, mutic, and the tarsal claws are 

 not quite so developed as in the preceding genus. The eight 

 species at present in my collection are as follows: 



Elytra with a condensation of pale scales at the base of the third interval, and 

 on the fourth in an elongate posterior spot, also often with the scales more or 

 less condensed on the inner intervals apically 2 



Elytra with two sharply marked irregular fasciae of whitish scales on a black back- 

 ground, the posterior fascia consisting simply of a transverse discalspot on 

 each elytron, the elytral ground scales brown in nanulus 6 



2 — Elytra with slightly convex and subglabrous intervals, on which the rather 

 coarse, deep punctures are well separated among themselves. Form rhom- 

 boid-suboval, convex, deep black throughout, the pronotum with the long 

 ochreous squamules evenly but rather loosely distributed throughout; on the 

 elytra the ochreous spots at the base of the third interval and at three-fifths 

 on the fourth, are well defined but moderate in size, elsewhere the squamules 

 are sparse and very small, one to each of the strong punctures, a little coarser 

 apically; on the under surface the similarly ochreous squamules are close 

 throughout, but rather unevenly so; beak a fifth longer than the head and 

 prothorax, strongly inflated, coarsely sculptured and sparsely squamulose 

 basally, smoother and more cylindric distally; antennae obscure rufous; 

 prothorax two-fifths wider than long, the arcuate sides a little more rounded 

 apically and becoming more parallel basally, the somewhat abrupt tubula- 

 tion very nearly half as wide as the base; punctures very coarse, deep and 

 dense, the smooth and feeble median carina narrow; basal lobe very gradual, 

 narrowly rounded at apex; scutellum convex, nude, quadrate, rather wider 

 than long; elytra one-half longer than wide, parabolic, wider than the 

 prothorax and distinctly more than twice as long; grooves smooth, very 

 deep; abdomen, medially toward base, sparsely and finely squamulose but 

 not impressed in the type. Length 7.5 mm.; width 3.8 mm. Brazil (Rio 

 de Janeiro). October. One example semilaevis n. sp. 



