INDEX 



Abdomen, of fly, 104; of pupa, 140. 

 Adult and enibryouic transformation, 



152. 

 Alary muscles of larva, 73- 

 Alimentary canal, of larva, 49 ; of 



insects, nomenclature of, 50 ; of fly, 



106 ; changes in, 147. 

 Amnion of insects, 167. 

 Anopheles, 31, 84, 91. 

 Antennae, of larva, 27 ; of fl}', 92 ; 



of pupa, 140; development of ditto, 



172. 

 Aphis-larva, spiracles of, 109. 

 Auditory organ of fly, 94. 



Balbiani, on salivary glands, 68 ; on 

 embryonic development of Chiro- 

 nomus, 157. 



Bibliography, 185. 



Blastoderm, formation of, 159; of 

 Chironomus, 160. 



Blood of larva, 77. 



Blood-gills, S3. 



Blood-space of larva, 85. 



Body-wall of larva, 85. 



Branchial system of larva, 83. 



Brauer's classification, 14. 



Calliphora, 23, 75. 



Cardia of larva, 52, 54. 



Carrifere on superficial cleavage of 

 insect-egg, 161. 



Ceratopogon, 34. 



Chironomus, species of, 10; two groups 

 of, II, 146, 150; transformations 

 of, 119. 



Chironomus- eggs, 8, 153, 157; muci- 

 lage of, 155 ; facilities for study of, 

 156; methods of study of, 158; 

 fertilization and segmentation of. 



Chironomus-fly, 9 ; extrication of, 8 ; 

 in winter, 8 ; egg-laying of, 9 ; its 

 head, 88; chitinous tunnels, 89; 

 eyes, 91 ; antennae, 92 ; auditory 

 organ, 94 ; sounds emitted by, 97 ; 

 its mouth- parts, 99 ; thorax, 100 ; 

 legs, 104 ; wings, 104 ; abdomen, 

 104; alimentary canal, 106; heart, 

 108 ; tracheal system, 108 ; repro- 

 ductive organs, 109; female organs, 

 in; male organs, 116; development 

 of, 118; of thorax of, 121; of 

 thoracic appendages, 122; of head, 

 127; of leproductive organs, 135. 



Chironomus-larva, its habitat, i ; 

 tubes in mud, i ; food, i ; move- 

 ments, 2 ; limbs, 2 ; labrum, 3 ; at 

 great depths, 3 ; in salt water, 3 ; 

 parasites of, 4; enemies of, 7 j 

 collecting of, 7 ; fresh-hatched, 10 ; 

 varieties of, 10, 135, 150 ; external 

 form, 25; examination of, 25; its 

 segments, 26; appendages, 26, 32; 

 thorax, 26 ; head, 26 ; antennae, 

 27, 49; eye-spnts, 27, 48; jaws, 28 ; 

 interior of liead, 29; salivary ducts, 

 29, 70 ; lingua, 30 ; brain, 30 ; 

 blood-gills, 35, 83; sensory setae, 

 35, 49 ; epidermis, 36 ; chitinous 

 cuticle, 36 ; wandering cells, 40 ; 

 insertion of muscles in, 42 ; its 

 nervous system, 43 ; transverse 

 nerves, 45 ; stomato-gastric nerves, 

 48 ; sense-organs, 48 ; alimentary 

 canal, 49 ; oesophagus, 49, 53, 62 ; 

 stomach, 49, 55 ; salivary glands, 

 50, 67 ; Malpighian tubules, 50, 

 70; mouth, 52 ; oesophageal valve, 

 53, 60 ; peri trophic membrane, 44, 

 58 ; cardia, 54 ; Vignon on histology 

 of alimentary canal of, 60 (note) ; 

 its dorsal vessel, 71 j heart, 71 ; 

 aorta, 71 ; alary muscles, 73 ; bloody 



O 



