156 



longiori, postice triangulariter producto ; unguiculis sim- 

 plicibus. Long., 3iL ; lat , 1|1. 



The elytra at their posthumeral dilatation are of the same 

 Avidth as at their postmedian dilatation, and a little wider than 

 the greatest width of the prothorax. In the example before me 

 the discoidal yellow spot near the base extends from the third 

 interstice to tlie fiftli inclusive. The posthumeral spot is on the 

 external three interstices ; the large, somewhat-rounded spot, 

 wath its hinder end at the middle of the elytra, becomes wider 

 from the lateral margin (from which it is separated by one inter- 

 stice) towards the suture (where it reaches the sutural stria). 

 The sub- apical spot is separated by a single interstice from both 

 suture and lateral margin, and is very narrow and nearly straight. 

 The base of the prothorax is exactly the same width as the base 

 of the elytra. 



In order to compare this species with a familiar one I place it 

 beside ;S'. cruentata, Kirby, and find that (disregarding colour and 

 markings) it differs chiefly as follows : — It is a little shorter, 

 wider, and less convex ; the head is considerably wider between 

 the eyes, the prothorax is more transverse, witli more strongly- 

 rounded sides and (though the puncturation scarcely differs other- 

 wise) without a distinct l?evigate central line ; on the underside 

 it differs chiefly in the prosternum much more closely punctured 

 in the middle, and in the apical-ventral segment being obliquely 

 truncate on either side behind, the two truncate faces meeting in 

 an angle in the middle (this may be sexual). 



This species, in the general style ot markings, etc., belongs to 

 the most numerous group of this extensive genus, being devoid 

 of markings, except on the elytra, and having these spined at the 

 apex. The nearest to it are probably >S'. Kreffti, MacL, JiUipntana, 

 Thoms., and neologa, Thoms., all of which are described too briefly 

 to indicate difierences other than in markings, but they all seem 

 to be differently marked ; Kreffti has the " subapical fascia" con- 

 tinued along the lateral margin of the elytron, and there becomes 

 of a deep-red colour ; liJliputana is described as having no mark- 

 ings in the posterior portion of the elytra ; neologa seems to be 

 a larger insect of blue-green colour, with bright-red markings on 

 the elytra, and without a discoidal spot near the base of the 

 .same. 



Queensland; Dawson River district; sent to me by Mr. French. 



>S'. trispinosa, Kerremans. There is nothing in the description 

 of this species indicating any distinction from S. bicincta, Boisd. 

 It is true the original description of the latter is not sufficiently 

 detailed for its identification, but M. Thomson (Typ. Bupr. App. 

 I., p. 34) has added details (presumably from inspection of the 



