"92 Memoirs of the Indian Museum. [Vol. VII, 



(Dyma) ; Java ; Borneo (Mts. Marapok and Kinabalu, British N. Borneo, Edam Kanan and 

 Pengaron, Martapoera) ; Bali; and S. Celebes (Tjamba). Length 3o"7~37'3 mm. 



Aceraius grandis (Burmeister). 



PLI. 



Passalus grandis, Burmeister, 1847, p. 463. 



Aceraius grandis + var. rectidens-ï subsp. hirsutus, Gravely, 1914c, pp. 231-233, pi. xii, figs. 28-30. 



Specimens of the typical form from Sumatra (Mana-Biang, Renau, Palembang. 2.000- 

 3,000 ft. ; Bng. Proepoe, interior of Paclung, ca. 1,600 ft. ; also specimens presented by 

 M. Guy Babault from Médan) ; North Nias (Hili Madjedja and G. Madjeja) ; Middle Nias 

 (Kalim Bungo and Dyma) ; Java (G. Tji Salimar, W. Preanger, +3,000 ft.; Kawie 

 Mountains, Pasoeroean ; Tji Bodas, ca. 4,000 ft.) and Borneo (Mt. Kinabalu and Brunei). 

 Length 40-55 mm. 



Specimens of subspecies hirsutus, Kuwert, from Nepal ; Darjiling District (Tukvar); 

 Assam (Margherita ; Chandkhira, Sylhet) ; Upper Burma (Cachin Cauri) ; Laos ; Tonkin 

 (Xieng Khouang, Hoabink, Chapa and Napé — all presented by M. Vitalis de Salvaza, who 

 has also submitted one from Ban Tink for examination) and S. Palawan. Length 36-8- 

 49/0 mm. 



The examination of the above recorded specimens has shown that southern specimens 

 must all be regarded as belonging to a single race. Neither of the names rec'.idens and 

 addendus (see Gravely, 1914c, p. 322 footnote) need, therefore, be retained. 



Aceraius occulidens, Zang. 



Aceraius occulidens, Zang, 1905«, pp. 190-191. 

 Aceraius occdidens, Gravely, 1914c, p. 234, text-fig. 4A. 



Specimens from the Malay Peninsula have been presented by Mr. Holman-Hunt, who 

 has also submitted one for examination from Gap, 2,700-3,000 ft., on the Selangor-Pahang 

 boundary. Length 45*5 mm. 



The species of Aceraius, as re-defined in this paper, may be identified as follows : — 



The upper tooth of the left mandible simple, set in a hollow in 

 front of a convexity of the upper margin, from which it is 

 distinctly separated at base . . . . . . . . . . 2. 



The upper margin without a convexity behind and distinct 

 from the upper tooth ; this margin concave or straight, or 

 else uniformly convex the whole way from the tip of the 

 upper tooth backwards ; or, the upper tooth bifid . . . . . . 5. 



The six antennal lamellae exceptionally long and slender . A. lamellatus, p. 89. 



The antennal lamellae short and stout, the first two more or 



less rudimentary . . . . . . . . . . . . 3. 



( The posterior pare oi the tenth and the whole of the eighth ribs 



I of the elytra unpunctured . . . . . . . . . . 4. 



J The seventh to tenth ribs of the elytra (inclusive) punctured 



\ throughout .. .. .. .. . A. borneanus, p. 90. 



