2^6 Memoirs of the Indian Museum. [Vot.. Ill, 



(Leplaulax orolims + Aceraius inaequalis, Geiniuir.^cr ami Harold, i86S, pp. 970 and 972.) 



Leplaulax orolieus, Kaup, 1869, p. 40. 



Basilianus inaequalis. Kaup, iiS7i, p. 56. 



Basilianus ^inaequalis, Stoliczka, 1873, p. 159. 

 (Basilianus inaequalis, VVytsman, 1884, p. 336.) 

 (Basilianus inaequalis, Kuvvert, 1891, p. 164.) 



Basilianus ^sinkepicus, Kuvvert, 1898, pp. 339-340. 

 (Basilianus inaequalis, Zang, 19036, pp. 418-9.) 



Ophrygonius ^quadrifer, Zaiig. 1904a, pp. 697-700, text-fia;. 3. 



Ophryoniwi ^inaequalis, Zau^, 1905a, p. 192. 



Basilianus sinkepicm, Zaiig, 1906a, pp. 177-1.S3. 



Ophrygonius ^inaequalis, Gravely, above, pp. 227-22S, pi. xii, Ggs. 24-2411. 



Kuwert gives 36 mm. as the leagth of his Basilianus sinkepicus ; but I have seen 

 specimens identified by himself, and found the biggest of them to be only 27 mm. 

 long. 



I/OCalities: — 



Malay Peninsula: Penang ; Perak; Johore; Singapore. 

 Sumatran Islands: Sinkep Island. 

 Sumatra: Deli. 

 Java. 

 Borneo. 

 ? Philippines. 



The sub-family to which this species belongs is so abundant in the Oriental 

 Region right up to Wallace's Line and seems to stop so abruptly there, that I am 

 incHned to regard Burmeister's " MoUucca" record as a mis]:)rint for " Malacca " (see 

 also Kaup, 1871, p. 56). 



Genus ACERAIUS, Kaup (1868) 1871. 

 = Ocythoe [partj, Castelnau, 1850; incl. Hdcrochilus, Kuwert, i8()6 = Rhipsaspis, 



Zang, 1905. 



Kuwert 's classification of this genus is extremely unsatisfactory, for it is based 

 primarily on variable characters. The order in which the species are arranged here is 

 based primarily on the form of the upper margin of the left mandible which , though 

 not always quite constant, is the be.st group character that I have been able to 

 find. 



The genus is common throughout the Oriental Region east of the mouths of the 

 Ganges and Brahmaputra, and is probably not found elsewhere. It is doubtful 

 whether it occurs in the Andamans or Nicobars. 



Aceraius wallacei (Kuwert). 



(Heterochilus crinilTts, Kuwert. 1^91, p. 166.) 



Heterochilus ^wallacei + crinilus -t- oculitesselatus, Kuwert, 1898, pp. 3,;4-5. 

 Heterochilus ^wallacei. Zang, 1905a, p. 167. 

 Aceraius ^wallacei. Gravely, above, pp. 228-229, pi. xii, ligs. 26-26/'. 



