307 

 311 



CONTENTS. ix 



e. Histolysis of the Tiacheie of the Larva, and De- '*"^ 

 velopment of the Trache.-e of the Pronymph - 306 



/ Histolysis of the Fat Bodies and other Larval 

 Tissues ■--... 



g. Histolysis and other Changes in the Alimentary 

 Canal --.... 



//. The Position of the Neuroblast and the Develop- 

 ment of the StoniodcXum of the Pronymph - 313 

 Sec. 2. The Development of the Nymph - - - 315 



a. The Position of the Imaginal Discs in the Pro- 



nynipli 315 



/'. Development of the Integument of the Head and 



Thorax - - . . . .3,3 



(. Changes m the Neuroblast and Development of the 

 Peripheral Nerves - - . . 



e. The Pupa-sheath - - . . . 



f. Changes in the Alimentary Canal - 



g. Origin of the Mesoderm - - . . 

 //. Development of the Dorsal and Sterno-dorsal 



Muscles - - . . . - \\b 



i. The Tracheal System of the Nymph - - 338 



A The Dorsal Vessel and Ccelom - - - 340 



Sec. 3. The Development of the Imago from the Nymph - ^44 



Appendix to Chapters VI. to I.\.-Methods of Study - - 347 



324 

 330 

 331 

 333 



BiDLioc;K.\i.Hiios.-l to 3, p. . ; 4 to 10, p. 7 ; H to 15, p. 25 ; 16 to 27 

 PP- 32, 33 ; 28 to 30, ,,. 62 ; 31 to 35, p. 72 ; 36 to 41, pp. 99, ,00 • 42 to 

 48, p. 106 ; 49 and 50, p. , ,9 ; 51 to 71, pp. ,27, .28 ; 72 to 81 pp 154 

 155 ; 82 to 89, p. ,90 ; 90 to 95, p. 198 ; 96 to 115, pp. 230, 231 ; 116 to 

 121, p. 235 ; 122 to 136, pp. 262, 263 ; 137 to 139, p. 276 ; and 140 to 147 

 p. 292. 



ERRATA. 



rage .7. line 8, for 'hypoblast behind,' read ' hvpoblast behind the 



Ijlastopore. ' 



l^age 2,1, last line, for ' ,\vi.' read ' .\iv.' 



age O5, in footnote, for ' K. L. C read ' C. L. C 

 I age 77, m footnote, /or ' Chironomus ' read ' Corethra.' 



