30 TENTHKEDINID^. 



45. Perga jucunda. 

 (Plate II. fig. 14.) 



Exp. al. 1 poll. 1 lin., long. corp. 6 lin. 



Bluish black, shading into dark shining violet on the back of the 

 abdomen ; antennae broken, three first joints blue-black. Thorax 

 with rounded and grooved elevations in front and at the sides, the 

 groove in the front rather shallow. Vertex excavated in front and 

 at the sides ; cheeks, scutellum (which is grooved in the centre, and 

 throws off a small projection at each hinder angle), a long spot on 

 the sides of the pectus below the first pair of wings, and the sides 

 of the abdomen orange. Wings smoky, the hind wings lighter : 

 fore wings with brown nervures ; costa and stigma brown, but the 

 latter filled up with yellow on the costa. Bullae very large and 

 distinct ; transverse cubital nervures interrupted on both pairs of 

 wings. 



Resembles P. dentata, but very distinct. Indicated by the late 

 Mr. P. Smith as the type of a new genus. 



Hah. West Australia. 

 a. 2 • (Type of species.) Perth. Purchased. 



46. Perga leachii. 



(Plate II. fig. 11.) 

 Perga leachii, Westw. P.Z. S. 1880, p. 377. 



Exp. al. 11 lin., long. corp. 6 lin. 



Head yellow, vertex (except the usual two spots) and tips of the 

 jaws black, ocelli yellow ; antennae yellow, comparatively long and 

 slender, club very gradually formed. Thorax dull reddish brown ; 

 frontal ridge triangular, black, and deeply grooved ; back of thorax 

 blackish. Abdomen dark reddish brown above, polished, and varied 

 with darker. Undersurface of the body and legs wholly testaceous, 

 except that there are two broad black stripes on each side of the 

 pectus. Pore wings yellowish hyaline, with yellow costa, stigma, 

 and nervures ; hind wings hyaline. 



This species stood in the British-Museum collection as P. Jcirhii, 

 a very different insect. 



Hah. Victoria. 

 a. $. (Type of species.) 



47. Perga halidaii. 



Perga halidaii, Westw. P. Z. S. 1880, p. 377, pi. xxxvii. fig*. 5. 

 Hah. Victoria. 

 a , £ ■ Victoria. R. Bakewell, Esq. 



11. CEREALCES. 



Antennae 10-jointed, bare, widened at the extremities of the joints, 

 and thickest in the middle, nearly as long as the head and thorax ; 

 thorax not ridged ; scutellum large, with a deep longitudinal depres- 



