19I4-J F- ^ Gravely : An Account of the Oriental Passalidae. 257 



another and from anterior angles of head ; outer tubercles longer than inner , and 

 situated only about \ of the way from them to anterior angles ; parietal ridges short 

 as in L. dentatus'. Pronotum rather sparsely punctured in anterior angles and beside 

 lateral margin, more closely in scars. Scidelliim and mesothoracic epislerna as in 

 L. dentatus and L hicolor \ mesosternum polished, the surface of the scars uneven, 

 their inner walls straight, extending the whole length of the plate. Central area of 

 metasternum with finely punctured depression in front", and a few large punc ures 

 arranged in a pair of lateral groups " rather more than half way back ; lateral areas 

 linear, slightly roughened ; intermediate areas smooth except for some punctures near 

 inner margin of posterior division Hind coxae and abdominal sterna smooth and 

 highly polished. Elytra much as in /.. hicolor, the grooves a little broader, however, 

 and the punctures correspondingly coarser, but scarcely transverse. 



Leptaulax bicolor (Fabricius). 



I. L. BICOLOR (Fabricius), s. str. 



PI. xiii, fig. 56. 



i. 4f' Naga Hills ? 



'^ Janakmukh, 600 ft., Abor Country S. W. Kemp. 



'-i^'- Dafla Expedition H. H. Qodwiu-Austen. 



^"'' (Dikrang Valley, Northern frontier 1 .^ tt r^ j • ^ . 



i» ( . , H. H. Godwin- Austen. 



( of Assam ) 



"^' Dunsiri Valley, 500 ft, Assam ? 



Dunsiri Valley, Assam 



9187 9 1K9-9 8 919.)-9 



1 1 ' 1 

 9200-;i 9206-10 9212- 



9221- 3 9225-8 9230-1 



1 1 1 

 92:U-9 9303-1 1129' 



29-31 

 19" J 



Darjeeling 



Nilgiri Hills 



Between Sukli and Misty Hollow, 



H. H. Godwin-Austen. 

 Stoliczka bequest, etc. 



IStoliczka bequest, 

 J. Wood-Mason. 



H. E. Andrewes. 



Dawna Hills, Tenasserim, 2100- , F. H. Gravely 



2500 ft. 



Kuching , Sarawak 



Mt. Kina-Balu, N. Borneo 



Sarawak Museuu 

 H. E. Andrewes. 



' Zang placed this species in his genus Leptaulacides , which is characterized by the possession of 

 long parietal ridges, and in the type specimens there is less of a break than in ours, between these 

 ridges and the supraorbital ridges. In our specimen the break, on one side especially, is of a somewhat 

 uncertain character, and I hesitated for some time before definitely describing the parietal ridges as 

 short. Subsequent observations of additional specimens have convinced me that the nature of these 

 lidges is variable in all species which fall, in the arrangement adopted here, between (but not includ- 

 ing) the two dominant species L. dentatus and L. hicolor. 



* These are probably subject to particularly great variation as in other species. 



