28 



MR. R. J. TILLYARD: LIFE-HISTORIES AND 



10 almost square above, vising dorsally into a conspicuous but ratiier blunt 

 subapical tubercle. 



Appendage s. — Superior short, f orcipate, rather flat, 3'8 mm., brown ; 

 inner margin finely serrate and carrying fine hairs. Inferior 2*7 mm., sub- 

 triangular, much upcurved, hollowed out above and below, shining brown, 

 downv, outer margins hairy ; tip blackish, slightly sub-bi£urcate (Plate 8. 

 figs, i, 2). 



? similar to cj , but larger, differing as follows: — Abdomen 1-2 much 

 enlarged, 3-10 cylindrical ; 10 without dorsal tubercle, but with a rounded 

 tubercle projecting under and between appendages ; 9 with a paler and more 

 projecting inferior shelf, ending in a rounded cutting-edge or saw of 10-11 

 teeth (Plate 8. figs. 3, 4). Ovipositor pale brown, edges of terebra darker ; 

 styli two-jointed, widely divergent, basal joint 2 mm., dark bi-own, apical 

 joint 1 mm., slender, pale brown (Plate 8. fig. 5). Appendages 1*5 mm., 

 straight, with rounded tip, brown. Pterostigma 6*5 mm., ochreous at first, 

 becoming dark brown in very mature specimens. 



The following table shows the variations in size (all lengths in mm.) : — 



This table shows considerable variation in size. The largest male is that 

 from Stanwell Park (from which locality, therefore, one might expect to get 

 a female larger than any yet discovered) ; the largest female from Mount 

 Tambourine. The smallest males are from Killarney and one from Mt. Tam- 

 bourine, the smallest female from Herberton. 



The Herberton female is somewhat different from the type-form, the 

 humeral bands of thorax being reduced to creamy lines edged with brown, 

 the lateral bands darker than usual, the whole coloration darker ; pterostigma 

 5"5 mm., dark brown ; brown bands of wings paler and much less conspicuous 

 than in type-form. In the Hill Top $ the wing-bands are somewhat 

 narrower and less regular than usual. 



Types : S (Dorrigo, N.S.W.), Coll. Tillyard. ? (N.S.W.), Australian 

 Museum, Sydney, N.S.W. 



