318 NEOTROPICAL PSELAPHIDAE 



3. General body pubescence varying from deep brown to black 4 



General body pubescence varying from light yellow to reddish-gold . . 5 



4. X very large and cylindrical, nearly twice as long as IX; Colombia 



to Mexico tritomus 



X trapezoidal, not nearly twice as long as IX; 2 mm.; Brazil. . . . 

 nigropilosus 



5. IX quadrate, length and width equal; X obconical, much longer than 



wide ; IX briefly and regularly ovoidal ; Mexico suturalis 



IX slightly longer than wide; X slightly longer than wide, with an 

 arcuate tooth at center of ventro-external face; XI as long as 

 preceding two united, with a porous tubercle at apico-internal face 

 and a sharp spicular tooth at center of ventro-external face; 

 Mexico veracruzensis new species 



6. IX distinctly longer than wide thomasi new species 



IX with length and width equal or much wider than long 7 



7. Large, at least 2.8 mm. long; known only from Mexico; elytra with 



sparse, strong, rugose punctures commodus 



Smaller; not known north of Panama or Lesser Antilles 8 



8. X distinctly transverse; 2 mm.; Windward and Leeward Islands.. 



hirtus 



X very slightly transverse or with length and width equal; known 

 only from the mainland 9 



9. Known from Argentina, Paraguay and Brazil 10 



Known from Panama Canal Zone, Venezuela and Colombia 11 



10. Pubescence inserted in minute granulations; male with anterior 



trochanter spined and anterior femur with an obtuse tooth at 



base; 2.3 mm.; Argentina punctulatus 



Pubescence not inserted in minute granulations; male with anterior 

 trochanter spined but the anterior femur simple, not toothed; 

 2.0-2.2 mm.; Brazil and Paraguay bellus 



11. Elytra impunctate; 1.75 mm.; Colombia hilaris 



Elytra with subasperate punctation 12 



12. IV-VIII all subequal in size and all transverse; 2.5 mm.; Venezuela 



jlavopilosus 



IV and V quadrate-moniliform to slightly transverse, VI-VIII very 

 transverse-moniliform 13 



13. IV-VI transverse, VII and VIII lenticular; IX slightly transverse, 



X quadrate, much larger than ninth; XI briefly, regularly ovoidal, 

 very large, obtuse at apex; pubescence short, appressed and flavous; 



2.1 mm. ; Venezuela reichei 



rV and V quadrate-moniliform, VI-VIII gradually transverse-monili- 

 form ; IX and X quadrate, tenth with a tooth on the ventro-lateral 

 face in the male sex; XI as long as preceding two united, also with a 

 tooth at center of ventro-lateral face in male sex; male with anterior 

 trochanters toothed ; females with simple quadrate ninth and tenth 



