1918. F. H. Gravely : Passalidae of the World. 85 



Tiberioides borealis (Arrow). 

 Fig. X. 



Chilomazus borealis, Arrow, 1906, pp. 467-468. 

 One specimen from N. Manipur, 3,000-9,000 ft. Length 38 mm. 



Fig. X. 

 Tiberioides borealis, Arrow, mentum X 8. 



The species of Tiberioides may be identified thus : — 



The lateral grooves of the elytra broad, their punctures trans- 

 versely linear . . . . . . . . T. huwerti, p. 84. 



The lateral grooves of the elytra narrow, their punctures 

 normal . . . , . . . . . . 



f The median part of the mentum without depressions or ridges T. austeni, Gravely, 

 j The median part of the mentum with a low convexity flanfced 

 u J by broad shallow depressions close to the middle of the 

 ( anterior margin, with a strong transverse ridge behind it . . T. borealis, p. 85. 



Genus EPISPHENUS, Kaup, 1871, p. 45. 

 Type, Efisflienus moorei, Kaup, 187 1, p. 45. 



Episphenus moorei, Kaup. 

 Pi. I. 



Episphenus moorei, Kaup, 1871 , p. 45. 



Episphenus moorei + pear soni, Gravely, 1914c, pp. 217-218, pi. xi, figs. 16-17. 



Eight specimens from Ceylon (Belihul-Oya and Colombo) and. one said to be from the 

 Himalayas. Length 30-7-34*2 mm. 



Episphenus comptoni (Kaup). 



PL I. 



Aceraius Comptoni, Kaup, 1868a, p. 28. 



Episphenus comptoni + var. flachi, Gravely, 1914c, pp. 218-219, pi. xi, figs. 18-19cr. 



Eleven specimens from Ceylon, including four from Belihul-Oya and one recently 

 collected by Mr. Kemp on Horton Plains. Length 29- 3-4 2*0 mm. 



