520 



REPORT OF THE 



a dozen specimens could be picked any day in July from the sedges and flower- 

 ing ferns in walking across this short open space. A large number of egg 



clusters were seen, all of them on the under side 

 of the leaves of the flowering fern, Osiniinda 

 rcgalis. One cluster was found to contain 900 eggs, 

 and, while others \vere larger, many of them were 

 smaller. The period of incubation is about 17 days, 

 and there appears to be a great uniformity in all eggs 

 FIG 6 THE SAw-HORNED FISH FLY ^'^ '^^'^^ samc mass. Numcrous clusters were picked 

 ciiAULiODES SERRicoRNis, NATU- ^yith the eggs all hatching at once, heads protruding 



RAL SIZE. 



AFTER LiNTNER. aud jaws wldcly swung open, a most curious sight, 



a veritable cJieval dc /rise of great rapacious mandibles. 



Corydalus cornuta Linn. This is the giant member of the family, and is known 

 commonly to entomologists as the horned Corydalus. ■ The larva is the well-known 



FIG. 7. HORNED CORYDALIS, CORYDALIS CORNUTA LINN. 

 «, the larva; b^ the pupa; c, the male imago; d, head and thorax of the female. 



AFTER RILEY. 



