1914-] F. H. Gravely : An Account of the Oriental Passalidae. 285 



Sikkim — Gantok . 

 Bhutan. 



Dafla Hills— Dikrang Valley. 

 Naga Hills : Manipur. 



2. Subsp. CONVEXIFRONS, Zang. • • 

 Assam: Khasi Hills— Shillong ; Teriaghat. 

 Burma: Ruby Mines; Sin Lum, Bhamo, 6000 ft. 



3. Subsp. dunsiricnsis, Gravely. 

 Assam : Dunsiri Valley. 



Ophrygonius birmanicus, Gravely. 



? Basilianm canlori [part], Kaup, 1871, p. 57. 

 Ophrvgonius ^birmanicus, Gravely, above, p. 226, text-fig. 3A. 

 The specimen from Cambodia which Kaup identified as 0. cantor i, may very 

 possibly have belonged to this species; but his specimen from the Malay Peninsula 

 can scarcely, I think, have done so, in view of the great difference that exists 

 between the Passahd f luiia of this peninsula and that of the rest of the continent 

 of Asia. 



Localities : — 



Burma : Ruby Mines. 

 ? Cambodia. 

 ?? Malay Peninsula. 



Ophrygonius singapurae, Gravely. 



?? Basilianus canton [part], Kaup, 1871, p. 57. 



Ophrygonius -f singapurae, Gravely, above, pp. 226-227, text-fig. 3B. 

 It is diffic alt to identify with this species the specimen from the Malay Penin- 

 sula which Kaup referred to 0. cantori ; for in his description of that species he notes 

 particularly the shortness of the antennal lamellae. No other species of Ophrygonius 

 is yet, however, known from the Malay Peninsula except 0. inaequalis, which he him- 

 self recognizes as distinct. 

 Locality : — 



Malay Peninsula : Singapore. 



Ophrygonius inaequalis (Burmeister). 



Passalus inaequalis, Burmeister, 1847, p. 468. 



Passalus ^oroleius ', Smith, 1852, pp. 17-18, pi. I, fig. 4- 



I The type specimen of Opltrygonius oroleius has elytra with strongly punctured lateral grooves ; 

 but the puncture? are round, rather than transversely linear as .in the typical 0. inaequalis from the 

 Sunda Islands. The British Museum collection contains a series of exactly similar specimens from 

 Penang, and also two or three specimens transitional between the two forms; so o^'oZems ought perhaps 

 to be recognized as a variety. 



