45 



I have before me several examples of Macleay's insect, and am 

 inclined to think them distinct from plagiata though undoubtedly 

 very close to it. The form of the common apical dark blotch on 

 the elytra seems constantly different, — in carinata filling the 

 whole apex (its front margin on each elytron a more or less 

 sinuous line running from the suture obliquely hindvvard and 

 outward to the lateral margin), while in plagiata it does not fill 

 the whole apex but is a square spot the front margin of which 

 runs out transversely towards the lateral margin of the elytron, 

 and at a considerable distance from it meets (at a right angle) 

 the lateral margin (of the spot) which runs hindward as a straight 

 line parallel to the suture to join the lateral margin of the elytra, 

 reaching it at a very short distance from the apex (of the elytra). 

 In plagiata but not in carinata the lateral margin of the elytra 

 is of a red colour distinctly brighter than the colour of other 

 parts of the surface, and the pronotum of carinata is evidently 

 more gibbous than that of plagiata with the central longitudinal 

 line considerably more strongly impressed. 



S. insignicollis, sp. no v. Sat elongata ; minus lata; pone 

 medium minus fortiter dilatata ; sat nitida ; supra glabra, 

 subtus pilis minus brevibus albidis plus minusve dense 

 vestita ; splendide aureocuprea (nonnullis exemplis plus 

 minusve viridi-micantibus) prothoracis macula magna dis- 

 coidali (hoc basin nee apicem attingenti) lsete violacea ; 

 elytris rufo-auarantiacis notas cyaneo-nigras pnebentibus 

 [sc. fascia postbasali angusta margines lateral es haud 

 attingenti (hac exemplorum nonnullorum in maculas 2 vel 

 3 divisa), fascia mediana curvata (antrorsum convexa), et 

 macula communi praeapicali (hac formam variabili) cum 

 fascia mediana secundum suturam connexa vel haud 

 connexa] ; capite sat brevi, crebre subgrosse punctulato, 

 longitudinaliter concavo ; prothorace quam longiori ut 7 ad 

 5 (postice quam antice ut 6-| ad 4) latiori, in parte violaceo 

 sparsius subfortiter nee rugulose (in parte cetera fortiter 

 rugulose confluenter) punctulato, lateribus arcuatis juxta 

 basin sinuatis, angulis omnibus acutis, basi sat fortiter 

 ' bisinuata ; elytris striatis, striis punctulatis, interstitiis sat 

 fortiter convexis sat fortiter (ut striae) punctulatis, apice 

 oblique emarginatis, parte emarginata externe quam ad 

 suturam multo magis fortiter acuminata, lateribus postice 

 subtiliter crenulatis. Long., 6 — 8^ 1.; lat., '1\ — 3^ 1. 



The most distinctive character of this species consists in the 

 very remarkable colouring and sculpture of the prothorax. The 

 disc is occupied by a large violaceous spot (which, however, does 

 not reach the front margin) on which the puncturation is smooth 

 and not close, while the rest of the surface is of a brilliant golden 



