18 
GENERAL INDEX. 
Hessian Fly, 1886, Appendix, 101-105 
(see also Cecidomyia destructor) 
Heterodera (Anguillula) radicicola, 1892, 
i, 127-137 ; 1893, 99-110 ; 1894, 60, 
61 
First observations of (in 1892), 1892, 
127 ; climate, probabilities of Eng¬ 
lish, not suitable, 127; food-plants 
of, 127 ; description of, 130 ; figure 
of roots diseased by, 131; method 
of spread of, 132; soil favourable 
for growth of root-knot, and rapid 
spread of infestation of, 133; ser¬ 
viceability of “trap plants,” 135; 
difference between, and Tylenchus 
devastatrix, 136, 137 
General observations on structure and 
habits, 1893, 99-103; prevention 
and remedies for, 103-108 ; results 
of chemical experiments on, 103 
Females resembling those of H. 
schachtii in shape, 1894, 60 ; de¬ 
scription of gall-growths formed 
by, 61 
Heterodera schachtii , 1894, 41, 47, 53-59 
Found by Prof. Percival in Hop-roots, 
1894, 53; feeding on Crucifer ce, &c., 
56; life-history of, description of 
female, 57; notes of observation of, 
58, 59; in connection with “nettle- 
top ” growth of Hops, 54; effect of 
attack of, on Beet plants, 59 
Hickory (see Plant index) 
Hill-grub (see Charceas graminis ) 
Hippobosca canina, 1895, 111-113, 1898, 
55, 56 
Description of, 1895, 111-113 
Mentioned, 1898, 55, 56 
Hippobosca equina, 1895, 95-111; 1898, 
50-56 
Localities of, 1895, 96 ; description of 
fly, illustrated, 97-102 ; habits of, 
102 ; practical remarks as to ac¬ 
customing horses to attack, 105; 
life-history of fly, 105-110 ; in the 
Canary Isles, 110, 111; applications 
to prevent attack of, 117; biblio¬ 
graphy of, 153 
Localities for, 1898, 50-52 ; obser¬ 
vations on, 50, 51 ; description of, 
with illustration of foot, 52-55; 
main points in habits of fly, 55, 
56; horses unaccustomed to, be¬ 
coming unmanageable, 55; peculiar 
cry of, 55 ; paraffin as a preventive, 
55, 56; species first observed in 
Glamorganshire and Brecknock¬ 
shire, 50 
Hippobosca maculata , 1895, 113-116 ; 
1898, 56 
Description and habits of, 1895, 113- 
116 
Mentioned, 1898 56 
Hop (see Plant index) 
Hoplocampa fulvicornis (see Selandria 
morio) 
Hoplocampa (Tenthredo) testudinea, 1883, 
1-3; 1891, 1-5 ; 1892, 10-17 ; 1896, 
9 ; 1897, 1-6 ; 1898, 15 
General habits of, and to prevent, 
1883, 2 
Prevention and remedies, and gather¬ 
ing infested fruit as a means of 
prevention, 1891, 5 
History of, 1892, 11; description and 
habits of, 11-13 ; dates of appear¬ 
ance of, 15 ; to prevent laying eggs 
in bloom, 15 ; prevention and reme¬ 
dies for, 16, 17 
Mentioned, 1896, 9 
Injury by, probably confused with 
that of the Codlin Moth ( Carpocapsa 
pomonella ), 1897, 1-5 ; difference 
between, and C. pomonella, 2-5; 
prevention and remedy, 5, 6 
Mentioned, 1898, 15 
Hop Aphis (see Aphis ( Phorodon) humuli) 
Hop Cone or Strig Maggot (see Psyll- 
iocles attenuatus) 
Hop Flea Beetle (see Psylliodes attenu¬ 
atus) 
Hop “Strig Maggot” (see Cecidomyia 
of the Hop) 
Hornet (see Vespa crabro) 
Hornet Fly (see Asilus crabroniformis) 
Horse and Cattle Flies, 1890, 64-71; 
1894, 75-77 ; 1895, 95-145 
Horse ( Equus caballus) (see special 
index for Mammals) 
Horse Bee (see Gastrophilus equi) 
Horse Bot Fly (see Gastrophilus equi) 
Horse Flies (see Tabanidce) 
Horse or Rain Breeze Fly (see Hcemato- 
pota pluvialis and Tabanidce) 
Horse-radish (see Plant index) 
Horse Warble Fly (see ? Hypoderma 
Loisetti — ? CEdemagena equi — ? Hy¬ 
poderma equi) 
House Flea ( Pulex irritans) 
House Fly (see Musca domestica) 
Humus-Anguillulce, not causing Clover- 
sickness, 1887, 2 
Hybernia defoliaria, 1888, 14-18; 1889, 
56,57; 1891,68; 1895,63; 1896, 
84-103 
Description, life-liistory, and preven¬ 
tion of, 1888, 14-18; to destroy, by 
shaking down, also by sticky-band- 
ing, 15; banding with gas tar to 
prevent, 16; treatment for similar 
attacks in U.S.A., 10; hoeing to 
destroy pup®, 17; hand-feeding 
sheep in orchards, to prevent, 17 
Mentioned with other orchard insects, 
1889, 56, 57 
Time of flight of, 1891, 68 
Percentage of, occurring with Cheima- 
tobia brumata, 1895, 63 
Injury of caterpillars of, to forest 
trees and orchards, jointly with 
Cheimatobia brumata and Tortrix 
viridana, &c., 1896, 84; observa- 
