386 Memoirs on the Coleoptera 



The pygidium is fully as long as wide, sub vertical, moderately 

 convex and deeply, closely punctate. The type is as follows : 



Stripenia infratectum n. sp. — Oblong-oval, strongly convex, deep black through- 

 out and very shining and glabrous above; beak rather slender, very evenly 

 cylindric throughout the length and evenly, moderately arcuate, shining, glabrous, 

 finely, loosely punctulate and a fourth longer than the head and prothorax, the 

 antennae piceous, with blackish club; prothorax a fourth wider than long, the 

 sides just visibly converging, feebly and evenly arcuate, rounding in fully apical 

 third, the tubulation more than half as wide as the base; punctures very fine and 

 sparse, stronger toward the sides and in a single line along the base; scutellum 

 well developed and in rather close contact; elytra fully one-half longer than 

 wide, ovulate but somewhat obtuse at apex, very little wider than the prothorax 

 and about twice as long; grooves slightly punctate and a fourth or fifth as wide 

 as the flat intervals, which are sparsely and extremely minutely punctulate; 

 abdomen unmodified, convex, the first suture fine but evident throughout. 

 Length 4.3 mm.; width 1.85 mm. Brazil (Santarem). One example. 



The type is probably a female, as there is no abdominal modifi- 

 cation. The genus is widely isolated, and I know of none other 

 that can be in any way compared with it. 



Tripusus n. gen. 



This is a very singular genus among the typical Madarids, in the 

 very long and strongly flattened, slender and evenly arcuate beak, 

 separated by a narrow shallow sulcus, and having prominent non- 

 decussate mandibles, straight but obtusely dentate within. The 

 body is rather broadly rhomboid-oval, shining and glabrous through- 

 out. Antennae at basal third, slender but rather short, the scrobes 

 mostly inferior, the scape rather short, the funicle shining and 

 glabrous, the first two joints notably elongate, equal and each as 

 long as 3-5 together, the outer joints but little larger and loosely 

 joined, the club small, oval, pointed and as long as the three pre- 

 ceding joints, with its first segment short, glabrous and shining. 

 Prosternum evenly convex, unmodified, except by a fine subapical 

 constriction, and with the posterior lobe truncate, the coxse sepa- 

 rated by about their own width. Legs well developed, shining, 

 simple, the femora slightly swollen and the tarsi slender, with 

 somewhat large arcuate claws. Prothorax not tubulate, the basal 

 lobe small, very gradually formed and with its apex abruptly and 

 deeply sinuate for the small and triangular, flat scutellum, the 

 elytra rather coarsely, deeply and evenly grooved. The pygidium 

 is very oblique, as wide as long, narrowly rounded, strongly, sparsely 

 punctate and with a very sharp entire median carina. The type is 

 the following: 



Tripusus filirostris n. sp. — Rhomboid-oval, rather convex, shining, deep black, 

 with very faint aeneous lustre, punctured throughout; beak in the type three- 

 fourths as long as the body, evenly and strongly arcuate, very smooth, but, 



