422 REVISION OF THE GENUS SEIROTRANA, ETC. 



S. DIMIDIATA, n.Sp. 



Oblong-oval, subparallel; very slightly widened at the posterior 

 third. Head, prothorax, and greater part of elytra shining 

 peacock-blue-green; elytra adorned with yellow as follows — one 

 elongate spot on lateral edge near shoulders; an interrupted 

 median fascia, extending from sides, terminating at second 

 interval from suture and widest near middle, with its hind margin 

 nearly straight, its thickened portion extending triangularly 

 forward; and a subapical curved fascia interrupted at first elytra! 

 interval, meeting on the sides a narrow yellow border which 

 begins at this point and is continued nearly to apex. 



Head coarsely punctate, strongly canaliculate, antennae with 

 basal joints blue, the rest metallic brown. Prothorax moderately 

 convex, widest at base, sides lightly rounded and a little expla- 

 nate at base; coarsely punctate, punctures becoming confluent 

 and rugose towards the sides; median line scarcely indicated in 

 front and by a smooth space and small fovea at base. Scutellum 

 triangular and minutely punctate. Elytra striate-punctate, with 

 intervals rather flat except on sides and towards apex, and closely 

 rugulosely punctate. Apex excised in a small semicircle, unden- 

 tate. Sternum and abdomen a brilliant metallic green, the former 

 sparsely and finely clothed with short whitish hairs, the latter 

 smooth; the whole underneath strongly punctate. Femora 

 metallic green, tibia) blue, tarsi brown, clothed with golden hair. 

 Dimensions — 9-12 mm. long; 3-4 mm. wide. 



Hab. — Blue Mountains (taken by the author). 



This species, commonly found in the Kanimbla Valley, near 

 Blackheath, in November, has not yet, I think, been described. 

 In colour it is not far removed f rom S. subgrata Blackb., (S. cam- 

 pestris Kerr.), but it is without the yellow border to the pronotum 

 of that species, while the groundcolour is of a far more brilliant 

 iridescent blue-green, which varies in different specimens. In 

 general the blue is more prominent on the elytra, with the 

 greener tint on the pronotum, but it is impossible to give the 

 limits of these colours. It is besides more elongate and parallel 

 than S. subgrata, with the apex of the elytra clearly excised. 



