11J18. 



F. ir. (Jkavkly: Passalidae oj the. World. 



67 



23 



Thy inner tubercles lart;e, directed forwards above the 

 somewhat sniivller outer tubercles, close behind the outer 

 side of wliich they are situated ; a pair of well developed 

 and somewhat widely separated secondary tubercles present 

 between the outer tubercles ; the frontal ridges straight, 

 u>eeting in a right or slightly obtuse angle ; the lateral areas 

 of the metasternuni, aud the epipleura, shoulders and 

 anterior parts of the sides of the ^lytra densely hairy 

 Not as above . . 



; The central tubercle small, without free apex, normal ; the 



] anterior margin of the head not thickened ; the lateral areas 



J of the metasternura hairless 



( Not as above 



(' The middle and hind tibiae armed with at most one small 



j spine 



(^ The middle and hind tibiae more extensively armed 



' The pronotum punctured only in the marginal grooves and 



\ in and immediately above the scars 

 The sides of the pronotum with an extensive band of 

 punctures above the scars 



^ The grooves of the elytra somewhat finely punctured 



( Th? grooves of the el)-tra very coarsely punctured 



(The inner and outer tubercles clearly separate ; the former 

 never more distant from one another than the latter, 

 sometimes more or. less, obsolete .. .. 



X The inner and outer tubercles situated close together, forming 

 I together a pair of small oblique ridges on the anterior 

 I margin of the head, with the former tubercles somewhat 

 V more distant from one another than the latter 

 ^ The epipleura hairless, or the central tubercle with free apex 

 -, The epipleura densely hairy ; the central tubercle without 

 (^ free apex 



^ The central tubercle without free apex, normal . . 



( The central tubercle with free apex, or more or less columnar 



The lateral areas of the naetasternum hairy ; a more or less 



rudimentary fourth lamella often recognizable on the 



antennae 



The lateral areas of the metasternum hairless 



The frontal area fully twice as broad as long ; the central 



tubercle decumbent throughout, with long slender free apex ; 



the lateral areas of the metasternum hairless . . 



The frontal area less than twice as broad as long ; the lateral 



areas of the metasternum more or less hairy . . 



C The central tubercle strongly elevated at base, massive, with 



29 ■• small decumbent forwardly directed free apex . . 



( The central tubercle not having this form 



P. in'crstilialts, p. 58. 



26 



28 



P. poUi. p. (i: 



P. ahortiriis. p. 60. 

 P. jan^oni, p. 60. 



P. iniicrona'.u?, p. 60. 



P. qiKidricoHis, p. 01. 



20. 



31. 

 2G. 



28. 



