166 



AUSTRALIAN BLEPHAR0CER1DAE, 



Abdomen slender subeylindrical, the hypopygium distinctly upturned. 

 Colour dull blackish above fading to brownish below. Each segment is furnished 

 ivith a tuft of blackish hairs on either side. 



Text-fig. 4: — Ed/wardsina australiensis n.sp. 



(x 511). b, the same, lateral view. 



Hypopygium of i, dorsal view 

 c, end of abdomen of ? (x 20). 



Hypopygium as shown in Text-fig. 4, a, b. 



5. Forewing 11.5, expanse 24.5 mm. Measurements of hindleg : — femur 

 !>.7, tibia 9.7, tarsus 4 mm. Differs from the male as follows :■ — 



The head (Text-fig. 2 a, b) is larger and more squarely shaped, the occiput 

 very broad, as wide as the total width across the eyes, cut off squarely behind, 

 but with the lateral posterior angles slightly rounded off. Eyes somewhat smaller 

 than in male and separated by a somewhat wider space. (Text-fig. 2, a, b.). 

 Antennae 2.8 mm. long. Margin of occiput behind eyes greyish white. Man- 

 dibles (Plate xlv., fig. 4, a) present, 1.3 mm. long, knife-shaped, with slightly nod- 

 ding apex ending in a fine tooth ; inner margin finely serrated for apical two- 

 thirds of its length, the fine teeth all being turned backwards towards the base. 



Abdomen tapering distally, broader than in male, ending in a pair of short 

 appendages cut off obliquely as shown in Text-fig. 4, e; gonapophyses of seg. 9 

 very small, pointed, hairy. 



T y p e s : — c? holotype, ? allotype, and series of paratypes of both sexes, in 

 Cawthron Institute Collection, Nelson, N.Z. A pair of paratypes in British 

 Museum of Natural History, London, and another pair in the Australian Museum, 

 Sydney. 



Habitat: — Waterfalls along Digger's Creek, from 4500 to 5500 feet, on 

 Mount Kosciusko, N.S.W. Types taken at a little over 5000 feet on Nov. 25th, 

 1921. paratypes, Nov. 24th to 28th inclusive. 



This remarkable insect occurs fairly abundantly wherever a small waterfall 

 offers sufficient rush of water for the existence of its larvae and pupae. It clings 

 to the edges of rocks over which the water is rushing, or to the damp moist 

 surfaces of rocks and crevices placed so close to the main rush of water that 

 they are drenched with the spray. Several pairs were seen in cop. in such 



