536 REVISION OF THE GENERA COLPOCHILA, ETC. 



the sides (viewed from above) appear moderately curved, at their 

 greatest divergence very little in front of the base, and scarcely 

 converging behind that point towards the lr)ase ; the hind angles 

 (viewed from above) appear almost entirely rounded ofl', and the 

 base is less strongly bisinuate than in some allied species. The 

 elytra are not wider at their base than the base of the prothorax, 

 and attain their greatest width much behind the middle ; their 

 sutural apex has no vestige of a spine. The elytral sculpture is of 

 the kind usual in the genus and is moderately strong. The 

 pygidium has a double system of puncturation, — one very fine and 

 close, the other coarser (but still fine) and less close, — which gives 

 the segment a slightly shagreened appearance. The antennal 

 flabellum is 3-jointed in both sexes (longer in the male than in the 

 female), and is of a somewhat paler colour than the stipes. I 

 have seen no authentic specimen from any locality outside N.S. 

 Wales. 



COLPOCHILA FRATERNA, Sp.nOV. 



Ovata ; nitida ; ferruginea, capite ol)SCuriori, antennis pal- 

 pisque testaceis ; pectore valde cinereo-hirsuto, abdomine 

 setoso ; capite (hoc elongato^ confertini rugulose, prothorace 

 subtiliter vix crebre, elytris (his geminato-striatis) subfortiter 

 sat crebre, pygidio nullo modo, punctulatis ; antennis 

 9-articulatis ; elytris apice suturali breviter spinoso-pro- 

 ductis ; prothoracis basi fortiter bisinuata, quam margo 

 anticus vix hujus dimidio latiori, angulis posticis (superne 

 visis) sat acutis (a latere visis) distinctis. 



Feminse antennarum flabello quam stipitis dimidium sat 

 longiori, 4-articulato, — articulo 1° quam 2' dimidium vix 

 longiori ; stipitis articulo ultimo intus breviter obtuse 

 dentato. [Long. 9, lat. 4i lines. 



The outline of the prothorax is almost exactly as in C sinuati- 

 coUis, the sides however being scarcely so decidedly sinuate near 

 the base and the hind angles (viewed from above) not quite so 

 acute ; indeed the general resemblance of this insect to C. sinuati- 

 coUis is very great; the following distinctions however seem to 



