1 1 1 



9S(ir-8 9471 94(iB 7I> 



' Sikkim ' 



224 Miinoirs 0/ the Indian Museum. [Vol. Ill, 



Genus OPHRYGONIUS, Zang. 



Ophrygonius cantori (Percheron), s. str. 



1. O. CANTORI (Percheron), s. str. 



PI. Xi, figs. 22-22(f. 



Regd. No. ^' Lainbatach, Jaunsar Forest Research Institute. 



( Stoliczka bequest, Asiatic 



1 Society's collection, etc. 



''j*^* Tista, Darjeeling District E. P. Stebbing. 



''""^•''^"" Sureil, Darjeeling District A. Alcock. 



rt.'. 9«8.i ,- r^ • 1- T-> .. • ^ ( E. A. D'Abreu. 



'■■i" ?^ kurseong, Darieeling District < ,, ^ „ . 



»« »s 5. J & ^ Museum Collector. 



'"'j;;' Gopaldhara, Rungbong Valley, H. Stevens (coll. \V. K. 



Darjeeling District Webb). 



" 'M Dikrans Valley, Dalla Hills H.H.Godwin-Austen. 



7JIT8 im\ i\u} p E. I. Company's Museum. 



etc. 



I have also seen specimens from the British Museum collection front Gantok, 

 Bhutan, and Manipur. 



The collection of the Imperial Forest Research Institute at Dehra Dun includes 

 a specimen found boring in Sauer wood in the Teesta forest, and several froin 

 Lambatach in Jaunsar, Dehra Dun, the latter being the most western Himalayan 

 record I know for any Passalid, except one of the same species in the same collection 

 from Tehri-Garhwal^a record which, I think, may be incorrect, as this has been 

 proved to be the case for all other Passalids recorded from the same place that I 

 have seen. 



Description. — Length 30-34 mm. Resembles both specimens of Episphcnus 

 indicus of similar size and E. neelgheyriensis except in the following particulars. 

 Anterior margin of lahrum straighter, sometimes with suggestion of slight median con- 

 vexity such as is found in Ophrygonius inaequalis. Mandibles with upper tooth some- 

 what less strongly developed, anterior lower tooth variable but more strongly deve- 

 loped on an average than in Episphcnus indicus or E. neelgherriensis, never entirely 

 absent, left lowest terminal and anterior lower teeth distinct at base as in E. 

 neelgherriensis. Depression of anterior margin of mentum consisting of a pair 

 of more or less separate concavities whose posterior wall is usually oblique, 

 not vertical, the angle at which it meets the general upper surface being in con 

 sequence blunter than in either of the two preceding species. Head punc- 

 tured and somewhat hairy between central tubercle and supro-orbital ridges, 

 both in front of parietal ridges and behind them; parietal ridges straighter, 

 their outer extremities usually more or ]e.ss strongly directed backwards; left outer 

 tubercle obliquely truncate, its ridge from left inner tubercle strongly marked and 

 extending straight forwards to the acute anterior {i.e. outer) angle, thus giving -the 



