1918.] F. H. Gravely : Passalidae of the World. Ill 



The left anterior lower tooth small but distinct; the left man- 

 dible of about the same size as the right . . . . G. schellongi, p. 109. 



The left anterior lower tooth more or less rudimentary ; the 

 left mandible more or less distinctly longer and slenderer 

 than the right .... k 



The posterior margin of the mentum moderately strongly 



arched ........ « 



The posterior margin of the mentum very strongly arched ; 



the antennal lamellae somewhat short and stout ; the lateral 



areas of the metasternum somewhat rough and hairy . . G. naviculator, p. 110. 

 The lateral areas of the metasternum more or less rough and 



hairy ; the antennal lamellae very long and slender . . G. germari, p. 109. 



The lateral areas of the metasternum smooth and hairless . . . . . . 7. 



The antennal lamellae somewhat short and stout ; the scars 



on the mentum very deeply impressed . . . . G. tenimbrensis, p. 109. 



The antennal lamellae longer and slenderer ; the scars on the 



mentum less deeply impressed . . . . . . . . . . 8. 



The left mandible and the antennal lamellae moderately long 

 and slender ; the scars on the mentum very lightly im- 

 pressed, especially near the middle line . . . . G. carolinensis, p. 110. 



The left mandible and the antennal lamellae somewhat longer 



and slenderer ; the scars on the mentum normal . . G. minor, p. 110. 



Genus PSEUDEPISPHENUS, Gravely, 1914c, p. 327. 

 Type, Pseudepisphenus perplexus, Gravely, 1914c, pp. 327-328, text-fig. 8, A-B. 



Pseudepisphenus perplexus, Gravely. 



PL I. 



Pseudepisphenus perplexus, Gravely, 1914c, pp. 327-328, text-fig. 8, A-B. 



One specimen from Snow Mts., 4,000-6,000 ft., Dutch New Guinea, presented by the 

 British Museum. Length 29-5 mm. 



Genus TARQUINIUS, Kuwert, 1896, p. 227 1 



Type, Tarquinius paradoxus, Kuwert, 1898, p. 279 ; Gravely, 1914c, pp. 178 & 327, text- 

 fig. 8, c.-D. (see pi. I). 



Subfamily LEPTAULACINAE. 

 The genera of Leptaulacinae may be separated thus : — 



The sides of the elytra hairy .. .. .. Trichostigmus, p. 112. 



The sides of the elytra hairless . . . . . . Leptaulax, p. 112. 



