f 371 ) 



extenils as a fine line along the suture to near the basal sutural vitta, and reaches 

 laterally the third stripe of puncture; in one small <? the fine sutural line is wanting; 

 in other specimens the lateral branches reach to the sixth stripe, and hence nearly 

 touch the ])Ostmedian lateral sjwt. The dorsal Hue is in the smallest S reduced 

 to a minnte spot. 



29. Xenocerus olivaceus (1874), Motschoulsky, BuU. Moscox p. 23T (New- 

 Guinea). 



A very large number of specimens of this species, from British New Guinea, 

 collected by A. S. Anthony especially in the Mailu and Moroka districts, shows that 

 there is considerable variability in the markings of the elytra. Many specimens 

 have only the sutural vitta, dilated posteriorly to form the transverse band, and a basal 

 line, situated upon the fourtli strij)e of punctures, reaching to middle of the eh-tron, 

 seldom interrupted, curving anteriorly towards the humeral callosity and then along 

 the basal margin to the scutellum joining the sutural vitta. In other individuals 

 there is another, straight, line upon the eighth stripe of punctures extending from 

 shoulder to middle, while in others again there is, besides tliis line, an oblique one 

 before the apex of each elytron. The last aberrational form comes close to speracerus 

 (1857) from Woodlark: but speracertis is distinguished by the postmedian branches 

 of the sutural vitta being strongly angle-shaped, the dorsal oblique portion of 

 the angle being broad, the lateral transverse portion thin, and by the posterior half 

 of the dorsal stripe being broader. 



30. Xenocerus olivaceus umbrinus snbsp. nov. 



S ? . Diifers from the New Guinea form of olivaceus in the postmedian trans- 

 verse band-like dilatation of the sutural vitta not extending to the lateral margin 

 of the elytra, generally stopping at the fifth or sixth stripe of punctures, much 

 wider than in olivaceus. The dorso-basal line of the elytron is mostly very short, 

 being reduced to a triangular spot near the shoulder (t)/]tii), sometimes absent; or 

 there is, besides this spot, a short line upon the fourth stripe of pnnctures ; no basi- 

 lateral and no apical lines, but the suture is at the apex sometimes whitish. The 

 lateral vittae of the prouotum very thin, either complete (Jf/pc), or more or less 

 obsolete. Upperside umber-colour, more blackish at the dilated part of the 

 sutural vitta. 



llab. Batjan (W. Doherty); a series of both sexes. 



31. Xenocerus olivaceus toliensis sulisp. nov. 



?. Subspeciei umbrinus dictae sui)ra tomento olivaceo-fulvo similis ; jirotho- 

 racis vitta mediana latior, laterales obsoletae basi apiceque extrenio indicatae ; 

 pronotnm punctatum; elytroruni vitta suturalis pdstice biramosa, ramis j)arum 

 obliqnis a sutura ad striam octavam abeuntilnis gradatim angustatis, margo lateralis 

 ad humerum albescens; lineola basalis brevis circum callum nigrum humeralem ad 

 striam septimam abenns, in interspatio quinto ramum brevissimum eraittens. 



riiib. Tcili Toll, N. Celebes, Nnverahnr— December ISi);") (II. Fruhstorfer); I ?. 



26 



