266 Memoirs on the Coleoptera 



impressed medially at base and there more closely punctulate; parallel 

 erect prosternal plates barely two-fifths as long as the prothorax and almost 

 as wide as long, their outline posteriorly broadly rounded toward apex, the 

 anterior angle sharp and right ; the canal is deep, shining and parallel through- 

 out, continuing shallowly between the coxae. Length 6.0 mm.; width 2.6 

 mm. Brazil (Benevides). July. One example lamellifera n. sp. 



Antennae dark rufous, longer and very slender, all the funicular joints elongate, 

 the first two or three notably so, the club between three and four times as 

 long as wide, slender and very evenly fusiform; prosternal canal (d 71 ) grad- 

 ually and greatly broadening between the narrower and longer compressed 

 plates, which are gradually finely acuminate from near the base; beak with 

 a cluster of a few erect hairs beneath near the apex 2 



2 — Body somewhat broader, vernicate, deep black throughout, the prothorax 

 rufous; beak (a 71 ) evenly and strongly arcuate and nearly three-fourths as 

 long as the body, only feebly tapering distally, moderately compressed and 

 with rather small, even and sparse punctures; antennae very slender and 

 long, the scape extending four-sevenths to the eye, the first three funicular 

 joints notably elongate, the second the longest, the third the shortest, of 

 the three; club a little longer than the three preceding joints; prothorax a 

 fifth wider than long, the strongly and evenly arcuate sides gradually be- 

 coming parallel basally, the tubulation about two-fifths as wide as the base, 

 which is margined by a row of moderate punctures, the lobe more rapidly 

 formed than in the preceding, smaller, short and rather. obtusely rounded; 

 scutellum very smooth, quadrate, feebly impressed along the middle; elytra 

 with more oblique sides than in the preceding, very feebly arcuate, except 

 behind the humeri and before the rather rapidly and obtusely rounded apex, 

 slightly wider than the large prothorax and nearly three-fourths longer; 

 striae, except distally, all but completely obsolete, the punctures feeble but 

 visible; abdomen (d*) medio-basally much more distinctly impressed and 

 very finely, rather closely punctulate, the presternum medially black and 

 with sparse, pale, suberect squamules, the canal shallow but abrupt and 

 glabrous, the very compressed spiniform plates more than half as long as the 

 prothorax, their posterior outline roundly rectangular at base, the anterior 

 feebly sinuate. Length 6.4 mm.; width 2.9 mm. Brazil (Santarem). One 

 example ruficollis n. sp. 



Body much narrower, smaller in size, deep black, glabrous and vernicate through- 

 out; beak (d 71 ) nearly three-fourths as long as the body, strongly arcuate 

 and compressed, thinner and somewhat flattened distally, the flat compressed 

 sides, finely, sparsely punctate, with a longitudinal impression; antennae 

 long, slender, somewhat as in the preceding; prothorax but little shorter 

 than wide, the broadly and evenly arcuate sides not becoming quite parallel 

 at base, the tubulation evidently less than half as wide as the base, which is 

 finely grooved, the lobe very gradual, with its apex strongly rounded; 

 scutellum quadrate, with rounded angles, feebly impressed along the middle; 

 elytra nearly as in the preceding but narrower, with rather less oblique sides, 

 more distinctly wider than the smaller prothorax and almost twice as long, 

 the discal striae a little less obsolete and similarly punctulate; male abdomen 

 and prosternal spines nearly similar, the prosternal surface with smaller, 

 minute, sparse and slender squamules, the canal shallow but sharply defined 

 throughout its length. Length 6.2 mm.; width.275mm. Brazil (Santarem). 



One example pinnatitarsis n. sp. 



A — Nearly similar but still narrower; beak (d 71 ) almost similar, except that the 

 sides are less compressed, broadly, evenly convex and not longitudinally 

 impressed; antennae very slender, but distinctly less elongate; prothorax 

 similar, except that the sides are more strongly arcuate anteriorly, becoming 



