450 ON THE GENUS N AN NODYTHEMIS, 



bright red, a dorsal line or band of black, thick or thin, enlarged 

 anally; 7-10 brilliant red; 7-8 sometimes touched with black 

 dorsally; a touch of black in sutures. Appendages : superior 

 1 mm,, separate, narrow, wavy, sublanceolate, carrying fine hairs, 

 just touching near tips; red or orange-red touched with black at 

 tips. Inferior 0*8 mm., subtriangular, tip slightly upcurved; 

 orange. 



Q. Total length 22 mm.; abdomen 14 mm.; forewing 17*5 mm.; 

 hind wing 16 7 mm. Wingsasin male, except triangle of hind- 

 wings, which is abnormal. Head as in male, but lacking the 

 black marks on front and labrum. Thorax as in male. Abdo- 

 men shorter and thicker than in male, nearly cylindrical; colour 

 orange or dull orange-brown, with an irregular longitudinal dorsal 

 black band, and transverse basal and anal black bands on each 

 segment; on each side a broad sublateral band of black reaching 

 from middle of 3 to end of 8 and connected with the dorsal band 

 by the transverse bands of each segment; underside yellowish, 

 ventral carina blackish, 1-8 very hairy beneath. 



Hab.— N.S.W.: Blue Mts., Blackheath, Katoomba, and Went- 

 worth Falls, also National Park — Victoria : Mt. Macedon. Rare. 

 October- February. 



It inhabits mountain bogs and swamps; its flight and habits 

 are very similar to the preceding species. 



3. N. occidentalis, n.sp. (Plate vi. fig.3). 



(J. Total length 24-275 mm.; abdomen 15*5-18 mm.; forewing 

 18-195 mm.; hindwing 17-185 mm. Wings: neuration 

 black, bases strongly saffroned for 1-2 mm. ; pterosligma 

 1'2-1'6 mm., black with a small white area along inner 

 margin and a larger triangular white area along the outer 

 margin. [The peculiar formation of the pterostigma is shown 

 in the enlarged fig. 4 in the plate]; membranule almost nil; 

 triangle of forewings abnormal, the proximal portion about twice 

 as long as the distal portion; triangleoi hind wings normal;* only 



Slightly abnormal in one or two specimens. 



