DESCKIPTIONS OF AUSTBALIAN JiSCHNINiE. 29 



Habitat. N.S.W. and Queensland; confined to small rapid creeks in 

 mountainous districts with thick scrub or £ore?t. Dorrigo, N.S.W. (1 ^ and 

 2 $ ? taken by myself, Nov .-Dec. 1911) ; Hill Top, N.S.W.^(1 ? , damaged, 

 taken by Mr. E. Cheel, Feb. 1912) ; Stanwell Park, N.S.W^ (1 S taken by 

 Mr. Goldfinch, Feb. 8th„ 1913). Mount Tambourine, Queensland (6 c? c?, 

 4 ? ? taken by myself, Dec. 1912) ; Killarney, Q. (1 ^ taken by Mr. E. J. 

 Dumigan, Jan. 1913) ; Herberton, Q. (1 ? taken by Mr. F. P. Dodd, Jan. 

 1911). 



Description of Larva (Plate 2- fig. 3) . 



,$ . Total length 48 mm., head 7x9'5 mm.; ^/<07^aA', prothorax 7, meso- 

 metathorax 9 mm. wide; abdomen (excluding appendages) 27 mm., widest 

 at segment 7 (9 mm.). 



Head. — Postocidar lobes rounded^ 7 mm. from end to end; vertex flat; 

 eyes 1*2 mm. apart at nearest; very dark brown speckled with pale brown ; 

 front narrow, 3x1 mm., very dark brown above, crossed by a pale brown 

 bar ; clypeus and labrum brown, genae paler brown. 



Labium brown, 11 mm. long by 6 mm. wide in position o£ rest, hinge 

 reaching to well below mesocoxae (Plate 6. fig. 1) . Mentum elongate 'shield- 

 shaped ; median lobe very slightly cleft medially, and carrying on each side 

 a conspicuous horny tubercle and a fringe of stiff hairs. Lateral lobes with 

 very long and slender movable hook ; apex truncate, with slightly nodding- 

 outer angle ; a series of fine crenations along inner margin (Plate 5. fig. 1). 



T h o r a x. — Prothorax dark brown, lateral lobes rounded ; two sharp 

 spines placed well forward on each side. Meso- and metathorax dark brown 

 carrying about the middle of each side a conspicuous obtuse-angled tubercle. 

 Wing-cases : fore 11, hind 10'5 mm., reaching just beyond end of segment 3 

 of abdomen. 



Abdomen well rounded above, slightly convex beneath. No dorsal 

 spines ; lateral spines as follows : — 2-3 obtusely angulated medio-laterally,, 

 4 with a very fine spine at lateral angle, 5-9 with verj' conspicuous spines 

 increasing in size. Segment 10, 2 mm. long by 4 mm. wide, slightly angu- 

 lated only. Involucra of male imaginal appendages : — Dorsal (inferior) 

 1*5 mm., triangular ; lateral (superior) 1"5 mm., sharply pointed. Aprien- 

 dages : superior 3" 8 mm., very sharply pointed, slightly downcurved ; 

 inferior 4 mm., also very sharply pointed, slightly incurved at tips (Plate 7. 

 figs. 1, 13). 



$ . Very similar to (J , but easily distinguished by the large ovipositor 

 (Plate 9. fig. 1) covering the middle ventral surface of 9 and 10, and pro- 

 jecting considerably beyond end of 10; the strongly upcurved tip resting 

 between the bases of the two inferior appendages ; involucra of female 

 imaginal appendages sharply pointed. 



Larva} Types (mounted exuviae). Coll. Tillyard. — ^J. Dorrigo, 

 N.S.W., Dec.'9th, 1911. ?. Stanwell Park, N.S.W., Feb. 22nd, 1913 



