38 A MONOGRAPH OF THE AUSTRALIAN M EM nil AC I D.I':, 



E. TUBERCULATA, sp nOV. 



(Plate i., ligs. 17, 18 and 19). 



g. Fuscous, with apical half of head, a spot on each side of the 

 median carina in front, the inferior surface of the lateral horns, 

 a band between their bases, base of their spines, lateral posterior 

 edge and median carina of dorsal horn, a spot on each side of the 

 abdomen, and posterior tibiae sordid 3'ellow; chest black. 



Long. $ 4: lat. inch lat, corn. 3 mm. 



9 Similar to male, but larger. 



Long. 4J; lat. inch lat. corn. 3 J mm. 



Described from one $ and one 9. 



Types in Coll. F.W.G. 



^^^.—Wingham, N.S.W. (Froggatt). 



This interesting species, in general appearance, reminds one of 

 the genus I'rayopa, ^Mvm.; in that genus, however, the prothorax 

 covers the entire upper surface of the body, including the scutellum. 



Po R c R H I N u s, gen.nov. 



Head large, porrect, quadrangular, superior surface nearly hori- 

 zontal, lightly convex and furnished with a strong median 

 longitudinal carina; ocelli below a line passing through centre of 

 the prominent eyes, nearer to each other than to the eyes. 



Prothorax, for some distance from the base, convex, nearly 

 horizontal, conforming to the base of the porrect head, after 

 which it is broadened, vertical, and produced above each lateral 

 angle in a large, triquetrous, conical, ear-shaped horn, which 

 extends upward, outward and forward, the apex turned a little 

 backward; the dorsum is very broad between these horns, and 

 destitute of a median longitudinal carina; destitute of a posterior 

 process, the posterior edge deeply and broadly sulcate forward. 



Scutellum as long as broad, the apex pointed, base rounded. 



Tegmina long, broad, reticulate with numerous venules; clavus 

 ver}^ broad at base, gradually acuminate to apex, with two veins. 



Wings very large, nearly equal in size to the tegmina, with four 

 apical cells, the tirst and third very long, the second shortest. 



