218 



GENERAL INDEX. 



PAGE 



Distribution, Geographical, of Aphides . i, 92; iii, 2; iv, 179 



of Siphonophora and Rhizobius in India iv, 181, 182 



— ofDryobius . . . i, 92 



— of Haniameliotes . . . , i, 93 



— of Lachnus . . . i, 92 



— of Schizoneura . . . i, 93 

 Dolphin, black and green . . . . ii, 83 

 Dorsal circulatory apparatus . . . i, 36, 37, 181 



— glands in Lachnus viminalis . . . iii, 56 



Doubleday on honeydew . . . i, 41 



— Pemphigian Aphides from China . . iv, 180 

 Drepanosiphum acerina . . . i, 185 



— aceris . . . . i, 185 



— platanoides . . . i, 183 

 Dry aphis ...... iii, 71 



Dryobius, general characters of . . . . iii, 70 



— croaticus ..... iii, 74 



— roboris . . . . . iii, 71 



— migrations of .... iii, 77 

 Dumas on sulpho-carbonatc of potassium as an insecticide . iv, 55 

 Duplicate males in Aphides . . . ii, 123 

 Duvau on " an Aphis epoch " . . . i, 3 



Egg infesting Chalcids 



Ehrenburg and Hemprich on the manna from Tama 



fera 

 Elatiptus 

 Endcis, general remarks on 



— formicina 



— pellucida 



— carnosa 



— rosea and E. bella of Koch 

 Endurance of extreme cold by Aphides 



— by insects in general . 

 Ephemera, early appearance of . . . iii, 3 

 Ephippial eggs, Allmann, Lubbock, and Huxley on . . iv, 113 

 Eriosoma of Leach ..... iii, 81 



— lanigera ..... iii, 89 



— mali ...... iii, 89 



— pallida ..... iii, 127 



— populi ..... iii, 117 

 Etymology of the word Aphis . . . . i, 5 



— addenda . . . . ii, 17G 



— Greek authors on, vide Preface . iv, p. viii 

 Euler on generalisation upon insufficient grounds, with an 



example . . . . . • iv, 130 



Exhaustion in plants caused by infesting Aphides . ii, 101 ; iii, 36 

 Exoaseus deformans on peach trees . . ii, 105 



Extirmination of the hop Aphis .... iv, 187 

 Exuviation ..... i, 85, 105, 135 

 Eyes of Aphides, simple, compound, and supplementary i, 15; iv. 1 



ii, 119, 126 

 is manni- 



. i, 42 



. iv, 24 



. iv, 90 



. iv, 91 



. iv, 91 



. iv, 92 



iii, 116; iv, 90 



i, 77, 104—108 



i, 



rods and cones of, see description of Plate 

 117, bis 



iv, 



