288 Memoirs of the Indian Museum. [Voi,. Ill, 



.The species is a very variable one and in each of three, at least, of the series 

 before me (from Borneo, Sinkep Island, and Johore) I find forms identical with 

 Kuwert's species meyeri, pontifex, and luzonicus together with all intermediate forms. 

 Localities: — 



Malay Peninsula: Perak, Johore. 



Sumatran Islands: Sumatra (Deli, Somgei Lalah, vSerdang, Peinan and Solok); 



Nias ; Ivingga ; Sinkep Island ; Billiton. 

 Java. 



Borneo: Kuching ; Limbong ; Busa ; Serai; Tandjong; Bandjermasin. 

 Banguey Island. 



Philippines: Luzon; S.Palawan. 

 I have also seen two specimens in the Deutsches Entomologisches Museum col- 

 lection labelled "Assam," and one in the British Museum labelled " Nepal," but 

 these records are scarcely credible, as the species appears to be confined to the Malay 

 Peninsula, the Sunda Islands, and the Philippines. 



Aceraius grandis (Burmeister). . 



Passalus emarginatus, Percheron, 1835, pp. 21-2, pi. ii, fia;. i. 



Passalus emarginatus, Percheron, 1841, p. 3. 



Passalus grandis, Burmeister, 1847, p. 463. 



Ocythoe emarginatus, Castelnau, 1850, p. 179. 



Passalus grandis. Smith, 1852, p. 5. 



Aceraius grandis, Kaup, i868rt, p. 27. 



Aceraius grandis, Kaup, 18686, p. 3. 

 (Aceraius grandis, Gemminger and Harold, i868. p. qyz). 



Aceraius ^grandi-, Stoliczka, 1873, p 158. 

 {Aceraius grandis, Wytsman, 1884, p. 336). 



Aceraius Addendus i- Rectidens -i- Hirsutus ^ Ceylonicns, Kuwert, 1891, p. 163. 



Aceraius addendus + f grandis + fminutifrons + prosternisulcntns + ceylnniciis + fhirsiitii'i f ^rectidens 

 + t'««g«"5 'r chinensis ■{■ molossHS , Kuwert, 1898, pp. 342-4. 



Aceraius \grandis, Zang, 19046, pp. 184-5. 



Aceraius ^hirsutus, Zang, i()0$a, -p 104. 



Aceraeus ^falawanus, Zang, 1905^, pp. 236-238. 



Aceraius ^grandis. Gravely, 1914a, p. 31. 



Aceraius ^ gravdis + vzii. ^ rectidens ■¥ ?,\\h. sp. -f hirsutus. firavely. abo\-e. pp. 2.',i-2,',3, pi. xii, 

 figs. 28-30. 



Zang (1904ft) has shown that A. addendus and minuiifrons are identical with .4. 

 ^mn:/«s, at the same time suggesting that .4. rectidens, mapius and molussus might 

 also prove to be identical with this species. The three last named are probably all 

 identical with the var. rectidens described abo\-e, which alone of them seems to me to 

 be sufficiently distinct for recognition, 



Kuwert's description of the elytra of A. chinensis makes it clear that this 

 form is not identical with the north Indian race hirsutus ; and it seems improb- 

 able that A. grandis, s. str., can occur in S. China, in view of the fact that hirsutus 

 is known to occur in Tonkin and Hainan, and so presumably occurs all along the 



