150 MR. E. "W. EDWARDS ON OLIGOCENE [vol. lxxix, 



I. 9052. — A female abdomen, 4 mm. long, with portions of the 

 thorax and wings. The abdomen is distinctly banded, the eighth 

 segment large (both tergite and sternite?), and the cerci appear to 

 be short and rounded (but are perhaps damaged). 



I. 17146. — A female ; body damaged (abdomen, 4 nam.) ; one 

 wing well preserved (4 - 5 mm. long), showing the fringe-scales of 

 the posterior border particularly well. Venation as in I. 9408. 



1. 9408. — A female showing one wing fairly well preserved, 

 also the palpi. The fork-cells are rather long, their bases almost 

 level, the upper one fully twice as long as its stem. Sc ending 

 above the base of -B4+5. Cross-veins separated by nearly twice 

 the length of the posterior. Second segment of palpi a little less 

 than twice as long as the first. The abdomen, as in a few speci- 

 mens of A. protolejjis, shows a bronzy lustre, probably due to 

 chemical change. There is a faint suggestion of abdominal 

 scaling. Perhaps this and I. 17146 may be females of A. pro- 

 tolepis, but they seem to be distinct from I. 17164 and I. 9993, 

 which have been regarded as females of that species. 



I. 9206. — Two damaged specimens on one block, with a venation 

 (as far as traceable) like that of the above two specimens. One 

 shows a few wing-scales fairly clearly. 



H. 540. — A female, the wings and tip of the abdomen poorly 

 preserved. The basal half of one antenna is present, also the 

 palpi and the base of the proboscis. The palpi are rather long, 

 the second segment practically twice as long as the first, and 

 showing traces of a small nipple-like segment at its tip. On the 

 same block is a pupa, probably of a species of Simulium. H. 419 

 shows similar female palpi. 



I. 9893. — The body of a female. Total length = about 6 - 5 mm. ; 

 abdomen, 4*5 mm. The specimen is flattened sideways, the 

 abdomen fully extended, tapering somewhat. Eighth segment 

 large. Cerci not visible (damaged in digging out). Palpi with 

 the second segment not quite so elongate as in H. 540 and H. 419, 

 also somewhat stouter. 



H. 463. — A beautifully-preserved loose wing (4 - 3 mm. long) 

 which does not, however, show any trace of scaling. The fork- 

 cells are both long, the upper with its base slightly distal to that 

 of the lower, and almost exactly twice as long as its stem ; its 

 branches are parallel. Sc ends above the base of -B4+5. Cross- 

 veins separated by scarcely the length of the posterior. 



H. 1014. — A loose wing, not very well preserved, 5 - 2 mm. long. 

 Fork-cells both long ; the upper has its base slightly but dis- 

 tinctly proximal to that of the lower, its branches parallel. A 

 crack in the specimen obscures the position of the cross-veins. 



