Index 
vittatus, *159; chirping 
of, 159 
Nemoura, 74 
Neophasia menapia, 445 
Nepa, 201 
Nepidse, Nepa {nepa, a 
scorpion), 194, 201 
Nerve endings in labial 
palpus of Machilis poly- 
poda, *26; in maxillary 
palpus of Locusta viri- 
dissima, *26 
Nerve-winged insects, 223 
Nervous system, 20; in 
head of locust, *23of 
house-fly, *22; of locust, 
*22; of midge, *22; 
stages in development 
of, of honey-bee, *24; 
stages in development 
of, of water-beetle, *25; 
sympathetic, 23 ; of larva 
of harlequin-fly, *24 
Nest, artificial, for ants, 
*550; communal, of yel¬ 
low-jacket, Vespa sp., 
*505; Fielde, for ants, 
*55!; Janet, for ants, 
* 550 , * 55 ! 5 of Califor¬ 
nia honey-ant, 546; of 
Camponotus pennsyl- 
vanicus, *545; of bum¬ 
blebee, *519; of leaf-cut¬ 
ter bee, *514; of a mud- 
dauber wasp, *499; of 
Vespa crabro, *504; of 
western agricultural ant, 
*542; of yellow-jacket, 
Vespa sp., cut open to 
show combs within, *506 
Nest-building of wasps, 
508 
Nest-burrow of Ammophi- 
la, *494; of Astata uni- 
color, *500; of Oxybelus 
quadri-notatus, *491; of 
short-tongued mining- 
beetle, *516 
Nesting-grounds of Am- 
mophila, *492 
Nests, for rearing ants, 
548 
Nest-tunnel of carpenter- 
bee, *513 
Nest-tunnels of two car¬ 
penter-wasps, *502 
Net, for collecting insects, 
how to make, 635; wa¬ 
ter, for collecting drag¬ 
on-fly nymphs, *87 
Net-winged midge, cross- 
section of body of larva 
of, *315 ; cross-section of 
eyes of, *317; female, 
*316; female, mouth- 
parts of, *316; head of 
larva of, showing forma¬ 
tion of adult head-parts, 
*318; heads of male and 
female of, *316; larva of, 
*315; mouth-parts of, 
*9; mouth-parts of larva 
of, *317; pupa of, *315; 
venation of wing of, 
*317 
Net-winged midges, 304, 
314 
Neuroptera ( vevpov , neu- 
rum, nerve ; nrepov, 
pterum, wing), 55, 223; 
key to families of, 224 
Nezara pennsylvanica, 214 
Nicoletia texensis, *61 
Nirmus, 118; felix, *121, 
122; lineolatus, 116; pi- 
leus, 117; prcestans, *114 
Nitzschia, 119 
Noctuidse, Noctua {noctua, 
a night owl), 370, 399 
Nomadidse, N o m a d a 
{vopag, nomas, nomad) 
455 . 
Nomeiettix parvus, *148 
“No-see-ums,” 310 
Notodonta stragula, *392 
Notodontid, venation of, 
*392 
Notodontidae, Notodonta 
(varoq, notus, the back; 
odovq, odus, tooth), 369, 
392 
Notolophus leucostigma, 
405; developing mouth- 
parts of, *363; larva of, 
*405 
Notonecta, 199 
Notonectidse, Notonecta 
(varoq, notus, the back; 
vijKTrjg, nectes, a swim¬ 
mer), 194, 198 
Notum (dorsal wall of a 
body segment) 
Number of insect species, 
5 6 
Nycteribiidse, Nycteribia 
{wKTepiq, nycteris, a 
665 
bat; ftioq, bius, life), 
35 i, 35 p 
Nycteribia sp., 352 
Nymph (young of insects 
with incomplete meta¬ 
morphosis), *42, *67 
Nymphalid, venation of, 
*440 
Nymphalidse, Nymphalis 
{vvpxpr), nymphe, a 
nymph), 450 
Oak bucculatrix - moths, 
376 
Oak leaf-roller, 380 
Oak-apples, 471, *472 
Oak-scale, southern Cali¬ 
fornia, *192 
Oak-worm moth, orange- 
striped, *428 
Oblique-banded leaf-roller, 
380 
Oblong leaf-winged katy¬ 
did, *151 
Obsolete-banded strawber¬ 
ry leaf-roller, larva of, 
*364; pupa and adults 
of, *365 
Ocellar lens of larva of 
saw-fly, *30 
Ocellus, *3, 31; section of, 
of honey-bee, *30 
Ocneria dispar, 405 
O d o n a t a (bfiovq, odus, 
tooth, applicability un¬ 
certain), 53, 75 
Odontomachus hcematodes, 
34 ° 
Odontomyia, venation of 
wing of, *329 
Odynerus, 499 
CEcanthus angustipennis, 
160; fasciatus, *159, 
*160; niveus, *159, 160 
CEdemasia concinna, 394; 
eximiq, *393; larva of, 
*393 
QEdipodinae, 136, 143 
CEneis, 457 
QEstridse, CEstrus {olcrpoq, 
oestrus, a gadfly, a 
sting), 332, 337 
Oiketicus abbotti, 386 
Oil-beetles, 289 
Olfersia americana, 351 
Ommatidium, *31, *32, *33 
Omus, 253 
Oncomyia, 337 
