300 STUDIES IN AUSTRALIAN NEUROPTERA, iv., 



Localities. — Brisbane district, S. Queensland; Sydney district, 

 N.S.W., common (including two specimens bred from lai'vpe found 

 in rolled-up leaves of Eucalyptus saplings, feeding upon the com- 

 mon Sugar-lerp, Psylla eAtcalyjiti, at Hornsby); National Park, 

 N.S W., fairly common; Melbourne, Victoria; Mt. Wellington, 

 Tasmania. 



h. — Var. fasmanica; ground-colour of foiewings rich russet- 

 brown; hindwing with reddish ptei^ostigma. The usual form 

 taken in Tasmania; Hobart; Maria Island. 



c. — Var. longifi(,dinalis\ a dark, longitudinal streak runs from 

 base to apex of forewing. 



National Park, one specimen, November 20th, 1915; Maria 

 Island, Tasmania, one specimen, December 31st, 1915, taken b}^ 

 Mr. G. H. Hardy. I'his latter has the ground-colour of var. b. 

 The National Park specimen has a radial formula, 



•2-f-l + l+H-l+2 = 8. 



4. Drepanacra instabilis McLachlan. (Plate xiv., fig. 15). 



McLachlan, Journ. Ent., Nov. 1863, pp. 111-6. 



The venation figured is that of a female, expanse 21 mm. 



Badial formula 3 4- 1 -f 1 + 1 -I- 3 = 9, or 4 + 1 + 1+3 = 9, or 

 3+1 + 1+4 = 9. Very rarely, 3 + 1+1 + 1 + 2 = 8. Hindwing 

 with 6-7 branches of l^s, usually fi; the two false origins of Rs 

 are longer than in D. hnmilis; cloudiness usually much more 

 marked than in D. hnmilis. Fenestella usually quite distinct, 

 and placed more perpendicularly to the wing-margin than in B. 

 hnmilis. Lnnnles very distinct, usually four, rarely three or five. 

 JVnmber of gradate cross-veins above Cu,, in forewing, 10-11 in 

 inner, 12-14 in outer series; in hindwing, 4-5 in inner, 10-12 in 

 outer. 



Differs from D. humilis in its larger size, stouter thorax, more 

 falcate wing-tips, slightly denser venation, and generally much 

 more varied colouration. 



McLachlan's type was described from New Zealand; his figure 

 shows a beautifully variegated form. The three specimens which 



