1918.] F. H. Gbavely : Passahdae of the World. 113 



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

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

 the name macassar iensis, raising the Bornean anibarbis to specific rank. 



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

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

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

 becomes a synonym only. L. anifunctus is very near L. cyclotaenius and may prove to be 

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



I am no longer able to regard the varieties vicinus and glabriventris, of L. bicolor 

 and dentatus respectively, as distinct. 



The three species L. bicolor, L. cyclotaenius and L. dentatus are so variable as to require 

 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 L. bicolor (this is usually, 

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

 almost 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 

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



Leptaulax planus (Illiger). 



Passalus planus, Illiger, 1800, p. 104. 



Leptaulax planus, Gravely, 1914c, pp. 260-261 and 310, p], 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. 1,000 ft. ; Png. Pandjang, Padung Interior, ca. 2,000 ft., 

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

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

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

 Medan, Sumatra. Length 12-3-14-0 mm. 



Leptaulax glaber (Kirsch). 



Trichostigmus glaber, Kirsch, 18776, pp. 139-149. 

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



One specimen from Batjan and four from New Guinea (Humboldt Bay, Mt. Arfak and 

 Takar). Length 14-0- 15-8 mm. 



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

 elytra, this species might easily be confused with small and much flattened specimens of the 



Q 



