194 



Index 



77; respiratory organs, So; tracheal 

 system, 80 ; branchial sy.-tem, 83 ; 

 Iiody-\vall, 85 ; fatty tissues, 85 ; 

 peculiarities when fresh-hatched, 

 176. 



Chironomus-pupa, 8 ; varieties of, 

 10, 150; development of, 118; 

 characteristic organs of, 139; its 

 legs, 140; wings, 140; abdomen, 

 140; antennae, 140; tail, 140; 

 tracheal system, 141 ; ti'aclieal gills, 

 141 ; changes in alimentary caiial 

 of, 147 ; diverticulum of ditto, 148. 



Clinocera, larva of, 34. 



Colon of larva, 67. 



t'orethra, 21, 31, 48, 75, 82, 84, 129, 

 146. 



Culex, 31, 43, 82, 84, 96, 146. 



Dareste on changes in dorsal vessel 

 of larva and pup.i, 79. 



Decentralization in Diptera, 106. 



Development, of pupa and fly, 118 ; 

 eml)ryonic, 156 ; methods of study 

 of, 158. 



Dicranota, 43, 55, 82, 84, 85, 146. 



Diptera, sub-orders of, 19; larvae of, 

 compared, 20 ; caeca of, 55 ; dorsal 

 vessel of, 71 ; two types of dorsal 

 vessel in, 75 ; Hammond on thorax 

 of, 100 (note) ; formation of imaginal 

 liead in, 134; respiratory trumpets 

 of, 146 ; decentralization in, 106. 



Diverticulum of pupal oesophagus, 



Dixa, 82. 



Dorsal vessel of larva, 71. 



Ectadenes of Esclierich, 135. 



Eggs of Chironomus, 154. 



Embryonic and adult transformation, 

 153; development, 156. 



Enemies of larva, 7. 



Ephemeridae, reproductive outlets of, 

 no; Carboniferous, 123; wing-like 

 structures of, 123. 



Ephydra, 83. 



Eristalis, 84. 



Escape of fly, 146. 



Esclierich on ectadenes and mesa- 

 denes, 135. 



E version of head, 133. 



Eyes of fly. 91 ; development of, 127. 



Fatty tissues of lava, 85. 

 Female organs of fly, in. 



Gehucliten, oesopliageal valve of 



Ptychoptera, 66. 

 Germs, sexual, 159. 

 Gordius, 4. 

 Graber on development of dorsal vessel 



of larva, 74. 

 Grimm on egg-laying by pupa, 117- 



Haemoglobin, 77. 

 Hallez' law of orientation, 15S. 

 Head of fly, eversion of, 133. 

 Heart, of larva, 71 ; of fly, loS. 

 Hemerodromia, larva of, 35 (note). 

 Hydrobius, 82. 



Hymenoptei-a, salivary glands of, 70; 

 formation of head of, 130 (note). 



Imaginal folds, 119; of head, 127; 

 rudiments in thorax, 121; head, 

 foimation of, 135. 



Insects, nomenclature of alimentary 

 canal of, 50 ; Malpighian tubules 

 of, 50 ; oesophageal valve of, 54 

 peritrophic membrane of, 58 ; de 

 velopnient of dorsal vessa of, 74 

 tracheal gills and blood-giils of, S3 

 tentorium of, 90 ; chitinons tunnel: 

 of, 91 ; rectal glands of, 107 

 thoi-acic spiracles of, 108 ; repro 

 ductive organs of, 109 ; larval stage 

 of, iiS; stripping of epithelium in, 

 147 ; pupal stage of, 151 ; develop- 

 ment of entoderm and mesoderm of, 

 162 ; amnion of, 167 ; number of 

 segments of, 168 ; development of 

 brain of, 171. 



Insect-transformation an adult trans- 

 formation, 11^2. 



Jaworowski, on dorsal vessel of lai -s'a, 

 73> 75 j on development of ditto, 



74- 

 Johnston on auditory organ of gnat, 

 96. 



Kowalewsky on pericardial cells of 

 larva, 74. 



Landois, on transverse nerves, 47 



(note) ; on sounds of insects, 97. 

 Lankester on haemoglobin, 78. 

 Larval moults of blow-fly, 132 (note). 

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

 Lyonet on Orthocladius, 14. 



