Brazilian Barusme 21 



Tarsal claws long slender and widely free; anterior coxae in close contact; tibiae 

 not dentate externally; strial intervals flat, only faintly carinulate on the 

 flanks. [Type Centrinus angulus Boh.] Lydamis 



Tarsal claws well developed and straight, sometimes thickened to some degree 

 basally, always connate at base 2 



2 — Anterior coxae in close contact; tibiae not dentate 3 



Anterior coxae very narrowly separated, the tibiae strongly and sharply dentate 

 externally near the base 5 



Anterior coxae separated by a third to half of their own width; tibiae simple; 

 scutellum transverse and well developed; strial intervals conspicuously 

 carinate 6 



3 — Strial intervals flat, only faintly carinulate on the flanks; scutellum very 

 short and transverse; beak evenly arcuate, the antennae submedial, the club 

 elongate-oval, abrupt. [Type Centrinus palmaris Pasc] Mexico. . Optatus 



Strial intervals in large part carinate 4 



4 — Scutellum well developed, transverse, broadly angulate and acutely cuspid 

 at apex; beak very slender, strongly arcuate, nearly smooth, cylindric and 

 attached at the lower part of the head in profile; antennae long and slender, 

 at rather behind basal third, the club long and very slender, with subequal 

 segments. [Type C. tenuirostris nov.] Costovia 



Scutellum nearly similar; beak of normal structure, long, arcuate, rather slender, 

 coarsely sculptured and feebly tapering, the antennae medial in insertion, 

 the club narrow and elongate, gradually pointed, the segments subequal in 

 length. [Type P. carinicollis nov.] Parasyprestia 



Scutellum with oblong and parallel, posteriorly truncate and densely clothed 

 median part; pronotum gibbous; antennal club much smaller, less elongate 

 and with relatively larger basal segment. [Type T. scutellatus nov.] 



Tripestes 



5 — Strial intervals wholly flat; sculpture throughout very coarse and extremely 

 dense; beak arcuate, strongly sculptured, the antennal club rather narrow, 

 elongate-oval; scutellum moderate, subquadrate. Mexico. [Type P. 

 dentipes Chmp.] Pseudoptatus 



6 — Beak nearly straight; antennae inserted behind the middle; prothorax not 

 rapidly inflated basally; body very large in size. [Type E. pennalus Pasc] 



Eurypages 



Beak arcuate distally; antennae submedial; prothorax rapidly inflated basally; 

 body moderate in size. [Type S. amplicollis nov.] Syprestia 



Optatus Pasc. and Pseudoptatus Chmp., occur only in the Central 

 American region and need not be referred to further; Macroptatus 

 Heller, also occurs in that region solely so far as known, and I have 

 seen no representative of championi HI., which is one of the largest 

 of the Barinae. My single example of Pseudoptatus dentipes was 

 taken by Prof. Wickham at Cuernavaca, Mex. The genus Pseud- 

 ambates of Champion, would seem, also, from its general outline, 

 to be better placed in this tribe than in the Ambatini. 



I am quite convinced that Eurypages, Syprestia and Macroptatus, 

 although having the anterior coxae well separated, are more appro- 

 priately assignable to this tribe than to any other; in fact otherwise 

 it would be necessary to erect a distinct tribe for them, which, as 

 these coxae are separated though narrowly in Pseudoptatus, would 

 seem to be unnatural. There is a certain community of facies 

 pervading the entire tribe as composed above. 



