1920.] 



115 



loosely enclosed in tlocculent wlute secretionary matter, which is also 

 scattered over the surrounding surfaces ; but have little or no attach- 

 ment to an}" suj^port. When the leaves or debris are disturbed, the 

 pupae and much of the secretionary matter fall away from them. The 

 larval exuviae remain attached to the posterior extremity of each pupa 

 (see fig. 1, a). 



Males commenced to emerge on May 13th, and continued to 

 ajipear, daily, for about a fortnight. The}'' are delicate, fragile insects 

 (fig. 1, h), with long wings and antennae ; the caudal extremity with a 

 pair of long, stout, white filaments. The body is of a dull brownish- 

 grey or greyish-purple colour ; very thinly coated with a whitish bloom. 

 Wings long and narrow, also with a whitish bloom. Halter (fig. 2, c) 



Fig. 2. — Steiiigelia gorodetskia. a, head of adxilt cJ > side view : X 220 

 b, ditto, dorsal view : x 220 ; c, baiter of ditto : X 450. 



ligulate, with two long and strong hooked bristles. Antennae long and 

 slender ; approximately equal to the length of the body ; 10- jointed, the 

 two basal joints short and comparatively stout, the others very elongate. 

 In place of the large compound eyes usually found in the males of this 

 family (^MargaroiUnae), there is a series of large simple ocelli, ex- 

 tending over both surfaces of the head. I have found it difficult to 

 determine the exact number of these ocelli, but there are at least 

 fourteen of them (see fig. 2, a and h). Length of body 1 mm. ; caudal 

 filaments 2 mm. ; expanse of wings 2*75 mm. 



