HUS.| F. II. Ck.wki.v : J^assalidur uj (he llo/VJ. 113 



of the body much greater than in L. cyclotaenius, the only other species known to ine from 

 Celebes with which it can possibly be identified. But for the present it seems best to <lrop 

 the name tnacasmriensts, raising the Bornean anibarhis to specific rank. 



The variation of L. cijclolitcnius in size, form, and head-puncturing proves to be much 

 greater than 1 previously supposed, especially in Malaysian specimens ; and the distinction 

 between the Malaysian and continental races breaks down. The name hinudayae therefore 

 becomes a .synonym only. A. aiiipuHctus is very near L. cijclotaenius and may prove to be 

 identical with it. For the present it seems best to regard it as a variety of that species. 



1 am no longer able to regard the varieties vicinus and (jhihricentris, of L. bicolof 

 and dcntatus respectively, as distinct. 



The three .species L. bicolor, L. cyclotaenius and L. dentalus are so variable as to reijuire 

 very special care in their discrimination. The first and third can always be told apart by 

 the structure of their parietal ridges, which extend outwards to the supraorbital ridges in 

 the former, and end abruptly not far from the central tubercle in the latter. In 

 L. cyclotaenius these ridges are variable ; but the puncturing of the lateral grooves of the 

 elytra is much more distinctly scalariform than is ever the case in /.,. bicolor (this is usually, 

 but not always, so in L. dcntatus also) ; and the central area of the metasternum is 

 almo.st invariably punctured either irregularly or over a more or less V-shaped area, 

 punctures being absent or confined to a single .symmetrically placed pair in L. dentatus. 

 In the rare cases where the general appearance of the specimen resembles that of 

 L. cyclotaenius, and the central area of the metasternum is entirely without punctures — 

 I have only seen one such, and very few in which these punctures were not at least 

 moderately numerous, all of these being from Sumatra or the !Malay Peninsula — one can 

 only base one's identification on the somewhat indefinite and variable characters afforded 

 by the shape of the frontal ridges and the puncturing of the head. 



Leptaulax planus (llliger). 



Pa.isahis planvs, llliger. 180U, p. 10-1. 



Leptaulax planus, (iravely, 1914c, pp. 2G0-'2I)I aiul IMO. pi. xiii. fig. .58. 



One specimen from Siam, nine from the Malay Peninsula (four of them from Perak, 

 and one from Larut), many from Sumatra (Bedagei Interior, ca. 6oo ft. ; Tandjong Morawa: 

 Serdang ; S. E. Serdang, ca. i,ooo ft.; Png. Pandjang, Padung Interior, ca. 2.000 ft.. 

 Tandjong-Djati. Eanau, Palembang, ca. 2,000 ft.) and Borneo (Sarawak; Brunei; 

 Doesonlandcn ; Martapura ; !Mt. Marapok, Dent Province ; Mt. Kina-Balu) and one from 

 Celebes (Tondano, Minahassa). M. Guy Babault has sent specimens for examination from 

 ]\Iedan, Sumatra. Length i2-3-i4-omm. 



Leptaulax glaber (Kir.><ch). 



TrkhoslUjmus ylaber. Kirsdi. KS776. pp. 1 ;'.'.»- ll'.i. 

 Leptaulax glaber. Gravely, 1905c, p. 307. 



One specimen from Batjan and four fr(»in New (iuinea (lluinlxildt Bay. Mt. Arfak and 

 Takar). Length J4-o-i5"8 mm. 



But for the reddish-brown colouration commonly found on the anterior parts of the 

 elytra, this .-species might easily bo confused with small and much flattened specimens t-f the 



Q 



