180 NEOTROPICAL PSELAPHIDAE 



Other characters, of generic import, are stated in the key to genera. 

 The species of this genus (with the exception of longidava) may be tenta- 

 tively separated as follows: 



Key to the Species 



Head with the front having a setose tubercle between the bases of 



the antennae 2 



Head with no median setose frontal tubercle 3 



2. Discal stria of each elytron distinct; head not distinctly and closely 



punctate nodifera Schaufuss, Male 



(Antennae lacking from the unique type) 

 Discal stria of each elytron obsolete and very short; head not dis- 

 tinctly punctate longiceps Raflray, Male 



(Antennal segment XI large and oval; 1.2 mm. long) 



3. Antennae with the last segment (XI) oblong, apex obtuse, base com- 



pressed and minutely toothed ; head distinctly and densely punctate 



schaufussi Raffray , Male 



(1.4 mm. long) 

 Antennae with last segment not so formed 4 



4. Known only from Guatemala 5 



Known from South America 6 



5. First tergite slightly longer than second ; 1.3 mm. long ; eleventh anten- 



nal segment subacuminate and about as long as sixth to tenth seg- 

 ments combined trimioides (Sharp) 



First tergite nearly twice as long as second; 1.5 mm. long; eleventh 

 antennal segment "very large and acuminate". . . .oedipus (Sharp) 



6. Antennae with segment III obconical, IV-VII moniliform, VIII trans- 



verse, IX and X transversely subquadrate; first tergite with the 

 basal discal carinae slender, slightly divergent, separated by one- 

 fourth of the discal width; 1.2 mm. long 



longiceps Raffray, Female 



Antennae with segments hardly crescentric (III-VIII) ; segment III 

 slightly wider than long, VIII slightly transverse, IX and X slightly 

 transverse, larger than eighth and crescentric ; first tergite with the 

 basal discal carinae short, parallel, including slightly less than one- 

 third of discal width; 1.2 mm. long xybaridoides Raffray 



The species may be listed as follows: 

 longiceps Raffray. 1890. Venezuela. 

 longidava Raffray. 1890. Brazil. 

 nodifera Schaufuss. 1887. Brazil. Genotype. 

 f oedipus (Sharp). 1887. Guatemala. (Bryaxis) 

 schaufussi Raffray. 1896. Brazil. 

 f trimioides (Sharp). 1887. Guatemala. (Bryaxis) 

 xybaridoides Raffray. 1904. Brazil, {nee xybaroides Raffray, 1904, 

 1908) 



