3-6 Memoirs of tlw Inditiu Museum. \\o\.. Ill, 



/- Pronotum unpuiictured, except in scars and marginal grooves L. timoricnsis, p. 303. 



Sides of pronotum more or less thickly covered with strong 



I, punctures . . . . . . . . . . 7. 



I f Central area of metasternum uupunctured .. .. I. (/f«/«/»s, pp. 252 & 303. 



\ At least a few strong punctures on central area of metasternuni L. cydntaenius , pp. 255 & 305. 

 , Puncturing of abdominal sterna very variable; punctures, 

 g I when present, of the usual type .. .. .. .. 9. 



1 Abdominal sterua covered all over with somewhat obscure, 



I broad, shallow punctures . . . . . . . . L. pluiius, pp. 260 & 310. 



/ Posterior intermediate areas of metasternutn punctured . . . . . . 10. 



t Posterior intermediate areas of metasternuni unpunctured . . L. roefyslorfi, pp 260 & 309. 



I Central part of mesosternum sharply delined on each side by a 

 pair of ridges which, starting from the anterior angles, extend 

 in a straight line backwards and a little outwards till close to 

 iqI ' ^^^ posterior margin, where they curve strongly outwards; the 



I. whole of the mesosternum outside these lines depressed and 

 granular ; only the central part smooth 

 Mesosternal scars smaller, not occupying the whole of the si les 

 of the mesosternum 

 I I^ateral grooves of elytra moderately broad, punctures slightly 

 ii\ transverse 



( Lateral grooves of elytra narrower, punctures rounder 

 J 2 < Frontal ridges not reaching anterior margin of head 

 ( Frontal ridges reaching anterior margin of head . . 

 ( Posterior intermediate areas of metasternum finely punctured 



1 in inner angle ; elytra uniformly coloured . . . . L. oblnsidens, p. 307. 

 I Posterior intermediate areas of metasternum strongly and 

 V confusedly punctured ; elytra reddish in front and black behind L. glaber, p. 307. 



ipnncliifi, pp. 256 & 306. 



L. novaeguincac, p. 306. 



L. hkolor, pp 257 & 307. 



Genus Trichostigmus, Kaup. 



'About 24 mm. long; a few punctures in anterior angles of 

 pronotum ; marginal groove of pronotum broad and deep and 

 I coarsely punctured 



About 17 mm. long; surface of pronotum unpunctured except 

 I close to scars ; marginal groove very fine or almost obsolete . . 



T. ilioreyi,Kz\x^; pp. 26i&3ro. 

 T. iirsiiliis, Schaufuss; p. 310. 



9. APPENDIX III.— THE GENUS TARQUINIUS, AND A REMARKABLE 

 NEW GENUS FROM NEW GUINEA. 

 Since writing the earlier part of this paper, I have received for examination a 

 very remarkable Passalid from New Guinea. Although this insect is not from the 

 Oriental Region, it may conveniently be described in the present paper ; for it will 

 have to be made the type of a new genus, whose position in the classification of Indo- 

 Australian genera outlined above is of peculiar interest. It appears, moreover, to 



' It is quite possible that this character is of less value than in this case it at present seems to 

 be, and that these two species are not really distinct. 



This distinction is by no means a satisfactory one; but the position of L. novaegiiineae, as ex- 

 plained above (p. 306), has not yet been properly determined. 



