230 NEOTROPICAL PSELAPHIDAE 



Front medianly slightly elevated with a deep, oblique and sulciform 

 fovea on each side trifoveolatus 



14. Vertex with a median carina 15 



Vertex without a median carina 17 



15. Vertex with the median carina very short 16 



Vertex with the median carina long, extending over the vertex ; front 



with a transverse impression which is widely interrupted at middle 

 infirmus 



16. Front with a transverse impression which is wide, shallow and does 



not reach margins modestus 



Front with a transverse impression which extends from side to side of 

 front and is deep and sulciform humilior 



17. Vertex with a median fovea or foveaform depression 18 



Vertex without any median depression 19 



18. Median vertexal fovea very small and punctiform adulator 



Median vertexal fovea not of this form ; body very much more elongate 



and cylindrical, with parallel sides; 2.6 mm parallelus 



19. Abdomen and posterior portion of elytra punctate to punctulated; 



1.7 mm punctatus 



Body absolutely impunctate fauveli 



The species of Arthmius known to inhabit the neotropics are listed by 

 groups as follows: 



I 



barbiellinii Raffray. 1909. Sao Paulo, Brazil. 



crassicornis Raffray. 1897. Mexico. 



plidcollis Reitter. 1882. Mexico. 



primarius Reitter. 1888. Blumenau, Brazil, {rostellatus Reitter) 



II 



dichrous Reitter. 1888. Blumenau, Brazil. 



Ill 



articularis Raffray. 1897. Yuracaris, Bolivia. 



bicolor Ritter. 1882. Sao Paulo, Brazil, (or in Group I?) 



bubalus Raffray. 1897. Mexico. 



curvicornis (Schaufuss). 1872. Yucatan, Mexico. (Batrisus) 



geniculatus (Sharp). 1887. Jalapa, Mexico. (Batrisus) 



infiatipes Raffray. 1897. Brazil. 



pedestrianus Raffray. 1904. Sierra de Durango, Mexico. 



platycerus Reitter. 1888. Blumenau, Brazil. 



sabomba new species. Panama Canal Zone. 



scaphiger (Sharp). 1887. Jalapa, Mexico. (Batrisus). (Fletcher, 1930) 



simplicior Raffray. 1897. Yucatan, Mexico. 



