388 Memoirs on the Coleoptera 



strong, dense and bearing slender whitish squamules laterally, fine, sparse 

 and nude medially; elytra obtusely oval, with deep sutural reentrant, nearly 

 a fourth longer than wide, with feebly tumid humeri, very slightly wider 

 than the prothorax and one-half longer, the grooves less than half as wide 

 as the intervals, which bear series of distinct, somewhat irregular punctures; 

 pygidium vertical, as wide as long, circularly rounded, evenly and strongly 

 convex and with loose strong punctuation; the abdomen is unimpressed but 

 with close punctures and fine squamules medio-basally; segments 2-4 

 subequal in length and very short, the first suture fine but distinct through- 

 out. Length 3.8 mm.; width 1.75 mm. Brazil (Chapada). November. 



One specimen punctulata n. sp. 



Body smaller and narrower, oval, the sculpture, color and lustre similar; beak 

 (c? 1 ) more slender and smoother, gradually dilated and more sculptured 

 behind the antennae, evenly and feebly arcuate and about as long as the 

 head and prothorax, not flattened distally; antennas piceous, nearly as in 

 the preceding but distinctly behind the middle; prothorax a fifth wider than 

 long, nearly as in the preceding but with the close lateral punctures occupying 

 a narrower area and having longer setiform squamules; apex more tubulate 

 and less than half as wide as the base; elytra nearly similar but a little 

 shorter and more obtuse at apex; pygidium nearly as in the type of Tripusus, 

 but much wider than long, a little more declivous and more obtusely rounded 

 at apex, and with a deep channel along the apex medially, the carina acute 

 and the punctures fine and sparse. Length 3.35 mm.; width 1.6 mm. 

 Brazil (Chapada — campo). October. One specimen incerta n. sp. 



Although rather similar, I believe the type of incerta represents a 

 species different from punctulata, because of femoral and abdominal 

 structure. The femora are not clavate and only feebly inflated, 

 and the second abdominal segment is about as long as the next two 

 combined, with the first suture completely obsolete medially. The 

 form of the pygidium and also thoracic lobe, scutellum and elytra 

 are characters betraying an intimate relationship with Tripusus, but 

 the beak, antennae, vestiture and sculpture are altogether different. 



The female has a distinct transverse propygidium wholly obsolete 

 in the male. 



Pycnorthoris n. gen. 



The body here is rather small, very evenly oval, convex, shining, 

 bristling with sparse erect setae and is very coarsely sculptured, the 

 pronotal punctures dual in size. The beak is rather long, almost 

 straight, slender, smooth and cylindric, gradually inflated, coarsely 

 sculptured and herissate with stiff setae very near the base, separated 

 from the head by a distinct impression, the mandibles bifid and 

 decussate; antennae inserted between basal fourth and third, slender, 

 the first two funicular joints notably elongate and equal, the others 

 short but loose, not much thicker distally, the club oval, as long as 

 the four preceding joints and abrupt. The prosternum is even, 

 separating the coxae by distinctly more than their width, the pos- 

 terior lobe large, extending behind the mesocoxal tangent and 

 broadly sinuato-truncate. Legs moderate, the femora mutic, the 



