CHAPTER VI 



THE EMBRYONIC DEVELOPMENT OF CHIRONOMUS 



The process of egg-la^dng has already been described e^^- 

 (p. 9). In C. dorsalis the egg-mass is a transparent 



Fig. 116 — Egg-masses of Chirononius. A, egg- rope of C. dorsalis, 

 divided into sections, to show both sides. B, twisted fibres, wliich 

 traverse the egg-rope. C, egg-mass of another species of Chirouomus. 

 /J, egg-mass of a third species. E, part of the last, more highly magni- 

 fied. t\ developing eggs in two stages. (From Miall's Natural Hhtorij 

 0/ Aquatic Insects.) 



cylinder with rounded ends, about 2 cm. long, formed 

 of a mucilage secreted by the gluten-gland, in which the 



