XLI. COLEOPTERA, VIII: 

 PASSALIDAE AND LUCANIDAE. 



By F. H. Gravely, M.Sc, Assistant Superintendent^ Indian 



Museum. 



PASSALIDAE. 



The Passalidae collected during the Abor Expedition of 

 191 1- 12 were mostly found either in trees felled by troops at 

 Kobo, where the}^ could not have been on the ground for more 

 than a few months, or in trees felled by Abors when preparing land 

 for cultivation. 



Five of the species found — Taeniocerus bicuspis. Aceraius 

 grandis, Macrolinus sikkimensis, Leptaulax dentatus, and Leptaulax 

 bicolof — have a wide distribution round the xAbor country. It is, 

 however^ uncertain how far beyond the Abor country the typical 

 Himala3''an form of Macrolinus sikkimensis extends, this form 

 being replaced in a great part at least of Burma by a local race of 

 the same species. 



All the remaining species are Himalayan, except Leptaulax 

 roepstorfi, which is only known outside the Abor country from 

 Burma and the Andamans. Of the Himalayan species Tiberioides 

 austeni is only known, outside the Abor country, from the Dafia 

 Hills; Aceraius himalayensis extends into the Naga Hills and 

 Leptaulax cyclotaenius subsp. himalayae extends into Tonkin. The 

 typical form of the last named species is ^lalaysian, and no form 

 is known between the Himalayas and Tonkin on the one hand, and 

 Perak in the Malay Peninsula on the other. 



The collection, which has already been referred to in my 

 " Account of the Oriental Passalidae" {Mem. Ind. Mus. Ill, 1914, 

 pp. 177-353, pi. xi-xiii), is as follows : — 



Genus TAENIOCERUS, Kaup. 



This genus includes species found in all parts of the Oriental 

 Region except the Indian Peninsula and Ceylon. 



Taeniocerus bicuspis, Kaup. 



Kobo, 400 ft., i-xii-ii — 4-ii-i2. 

 Rotung, 1400 ft., i-i-i2. 

 Upper Rotung, 2000 ft,, 5-i-i2. 

 Renging, 2150 ft., 19-xii-ir. 



This is the only species of the genus found north of the 

 Malay Peninsula. It is recorded from the Malay Peninsula, Siam, 



