1914-] F"- H. GravEIvY : An Account of the Oriental Passalidae. 293 



Aceraius incidens, Kirsch, 1877, p. 28. 

 {Aceraius emarginatus [part], Wytsman, 1884, p. 336.) 

 {Aceraius Percheroni + Incidens + Kaupi, Kuwert, 1891, p. 164.) 



Aceriaius ■\ percheroni + ■\ incidens + -^ Kaupi + t^^^"^) Kuwert, 1898, pp. 348-9. 



Aceraius ■\Kaupii, Zang, igoSfl, p. 112. 



Aceraius laevicollis, Zang, 19050, p. 225. 



Aceraius ^borneanus. Gravely, above, pp. 238-239, pi xii, figs. 25-25Ô. 



The only two differences Kaup was able to find between A. percheronii and 

 A. kaupii can be accounted for by supposing the latter to have been described 

 originally from rubbed specimens — especially as the denticle in the middle of the 

 truncation of the left outer tubercle varies greatly in size in the specimens before me. 

 That this difference in freshness is the only real difference between the two, seems to 

 be indicated by the fact that in Kuwert' s description of the specimens that he identi- 

 fied as A. kaupii, there is no reference to the left, but only to the right, outer 

 tubercle being shorter than in A . incidens, the only difference given between A . incidens 

 and A. percheronii being one of no value whatever. A. nanus, Kuwert, also appears 

 to be identical with the present species. 

 Localities : — 



Malay Peninsula : Perak. 



Sumatran Islands : Sumatra — Deli ; Indrapura ; Tebing tinggi ; Peinan ; Lang- 

 kat. 

 Nias — Hili Zobobo. 

 Mentawei — -Sipora. 

 Java: Batavia. 

 Borneo: Kina-Balu, c. 5000 ft.; Sampit; Tandjong; Bandjermasin ; Banguey 



Island. 

 Phillippines: South Palawan. 



Aceraius minor, Gravely. 



Aceraius f minor. Gravely, above, p. 240, text-fig. 4D. 

 Ivocality : — 



Malay Peninsula: Taiping, 4000-5000 ft. ; S. Perak (Telom, 4000 ft.). 



Aceraius aequidens, Gravely. 



Aceraius t aequidens. Gravely, above, p. 240, text-fig. 4E. 

 Locality: — 



Borneo: Kina-Balu. 



Sub-family MA CROLININA E . 

 This sub-family is known from Celebes, and from all parts of the Oriental Region 

 except the Indian Pensinsula. Only one genus can at present be recognized. 



Genus MACROLINUS, Kaup, 1868. 

 Incl. Aceraius [part], Kaup, 1868; Basilianus [part], Kaup, 1871 ; Tiberius [part], 



Kuwert 1801. 



