LIST OF PLATES. 



TO FACE 



1'I.ATE pAf;E 



I. THE ALIMENTARY CANAL OF THE LARVA 52 



II. THE NERVOUS SYSTEM OF THE LARVA 64 



III. THE NERVOUS SYSTEM OF THE ADULT LARVA 70 



IV. THE IMAGINAL DISCS OF THE RESTING LARVA First Stage So 



V. THE CEPHALO-THORACIC SEGMENTS - 112 



VI. THE PROBOSCIS OF THE IMAGO 130 



VII. THE THORAX OF THE IMAGO - - 168 



VIII. DETAILS OF THE THORACIC SKELETON 172 



IX. THE LEGS AND FEET - 192 



X. THE WINGS 200 



XI. MALE BLOW-FLY 216 



XII. EMBRYOLOGY - 232 



XIII. EMBRYOLOGY 242 



XIV. EMBRYO Early Stage 250 

 XV. EMBRYO Late Stage - 258 



XVI. HISTOLOGY 266 



XVII. HISTOLOGY 284 



XVIII. HISTOLYSIS 302 



XIX. PRONYMPH - 316 



XX. PRONYMPH AND NYMPH 318 



XXI. NYMPH - - 342 



