224 



Memoirs of the Indian Museum. 



[Vol. Ill, 



Genus OPHRYGONIUS, Zang. 



Ophrygonius cantori (Percheron), s. str 



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



PI. xi, figs. 22-22a. 



I^ambatach, Jaunsar 



j 9307-8 9471 9166 



"Sikkim" 



Tista, Darjeeling District 

 Sureil, Darjeeling District 

 Kurseong, Darjeeling District 



Gopaldhara, Kungbong Valley, 



Darjeeling District 

 Dikrang Valley, Dafla Hills 



Forest Research Institute. 

 ( Stoliczka bequest, Asiatic 

 I Society's collection, etc. 



E. P. Stebbing. 



A. Alcock. 

 f E. A. D'Abreu. 

 I Museum Collector. 



H. Stevens (coll. W. K. 

 Webb). 



H. H. Godwin-Austen. 



E. I. Company's Museum, 



I have also seen specimens from the British Museum collection from 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 from 

 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 Episphenus 

 indicus of similar size and E. nedgherriensis 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 Episphenus 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 menium 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 less strongly directed backwards; left outer 

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

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



