294 STUDIKS IV AUvSTRALIAN MECOPTBRA, 1., 



Hab. — Hobart (October-November), Mount Wellingtou (Jan- 

 uary). On buslies at the sides of small watercourses. 



Types, (J9, and series of paratypes in Coll. Tillyard (Hobart, 

 October-November, 1916, taken by Messrs. G. H. Hardy and C. 

 Cole). 



2. Nannochorista holostigma, n.sp. 

 (Plate xvi., tig.2). 



Total length, ^ 4*8, $ 6-8; abdomen, (J 3, 9 Ab-ol ; /orewing, 

 (J 6, 9 7-85; hi^idiving, ^ 5*2, 9 6-7*5; expanse, $ 12-5, 9 14-5- 

 175 mm.* 



Closely resembles N. dipierdides, from which, however, it may 

 be at once distinguished as follows :— In forewing, Sc ends up 

 on C, not on Rj, and the pterostigma is completely closed proxi- 

 mally by a small cross-vein descending from Sc to Rj. "Wings 

 slightly broader and generally somewhat less hyaline than in 

 N. diptero'ides; most of the cross-veins in the forewing usually 

 distinctly clouded. Legs with a black spot on each trochanter, 

 a black blotch distally on each femur. Segs.9-10 and claspers 

 of (J rich red-brown, larger than in iV. dijiterdides. Cerci of 9 

 as in Text-fig. 2, b. 



Ilab. — Shores of Lakes Lilla and Dove, Cradle iMountain, 

 N.W. Tasmania (3, 000 feet). Also a few specimens from bushes 

 overhanging the creeks. January, 1917. 



Types, (J9' ^'^^ series of paratypes. in Coll. Tillyard. 



3. Nannochorista maculipennis, n.sp. 

 (Plate xvi., fig. 3). 

 (J (unique). Total length \2, abdotnen 2 7, forewing 5*5, hind- 

 imng 4'7, expanse 1 1*4 mm. 



This very distinct species differs from N. diptero'ides as follows: 

 Head entirely black; anteitnce '2'7 mm, 22-jointed, black, third 

 joint not much elongated. Thorax and abdomen: 1-6 jet black, 

 9-10 and claspers dark brown, large, blunter than in JV. dipter- 



" In all the species, the variation in size of the females is very great, 

 necessitating the giving of limiting measurements. On the other hand, 

 the males vary very little in size, so that an average measurement will 

 suffice. 



