112 Memoirs of the Indian Museum. [Vol. VII, 



Genus TRICHOSTIGMUS, Kaup, 1871^.31. 



Trichostigmus ursulus, (Schaufuss). 

 Leptaidax ursuhis, Schaufuss, 1885, p. 187. 



A number of specimens from S. Celebes (Lompa-Battau, 3,000 ft., and Tjamba). 

 Length 16-0-19-5 mm. 



Trichostigmus ursulus resembles Leptaulax bicolor, except in the generic character and 

 in having the sides of the pronotum more sparsely punctured in the neighbourhood of the 

 scars and not at all in the anterior angles. 



Trichostigmus thoreyi, Kaup. 



Trichostigmus thoreyi, Kaup, 1868«, pp. 13-14. 



A single specimen presented by Mr. C. F. Baker from Imugin, N. Viscaya, Phillipines. 

 Length 16-7 mm. 



T. thoreyi differs from the preceding and only other known species of the genus only 

 in the structure of the pronotum. 



The species of Trichostigmus may be distinguished thus : — ■ 



f The pronotum with a few punctures in the anterior angles, its 



marginal grooves broad and deep and coarsely punctured T. thoreyi, p. 112. 

 The pronotum unpunctured except near the scars, its 



marginal grooves very fine .. .. .. T. ursulus, p. 112. 



Genus LEPTAULAX, Kaup, 1868a, p. 11. 



Incl. Leptaulacides , Zang, 1905a, p. 106, footnote 1. 



Type, Passalus dentatus, Fabricius, 1792, p. 241. 



The account of this genus which I published in 1914 was based mainly on the 

 examination of specimens from Continental Asia. I had, it is true, received a few 

 specimens from the Archipelago ; and I was able to make a hurried examination of the 

 named collection in Berlin. But I had had no opportunity of examining a large and 

 representative collection at leisure, an opportunity which has now been afforded by the 

 obtaining of the Van de Poll collection for the Indian Museum. 



The careful examination of this additional material convinces me that the drastic 

 reduction in the number of species, advocated in my previous paper, was fully justified 

 except in the case of L. barbicauda, Zang ; and, indeed, that a few further reductions must 

 be made. Thus L. obtusidens proves to be a synonym of L. bicolor ; and L. novaeguineae, 

 together with the names regarded as synonyms with it, are almost certainly synonyms of 

 the same species, or partly of the same species and partly of L. dentatus. 



I have seen nothing in the collection that can be distinguished as L. macassar iensis ; 

 but a specimen labelled with this name, and associated with specimens both of L. bicolor 

 and L. dentatus, proves to belong to the former species. I am still inclined to think, judging 

 from Schaufuss's description, that the type may prove to be of a distinct species, the 

 puncturing of the head being apparently much coarser than in L. bicolor, and the convexity 



