WERNER, F. 1911. Scorpions and allied annulated spiders. Wellcome Trop. Research Laboratories, 4th Rept., vol. B, p. 178-194. Pls. xiv-xv. WHITFIELD, A. 1912. A method of rapidly exterminating pediculi capitis. Lancet 1912 (2), p. 1648. See notes. WILLISTON, S. W. 1908. Manual of the North American Diptera, New Haven, p. 1-405. WILSON, G. B. and CHOWNING, W. M. 1903. Studies in _Piroplasmosis hominis_. Journ. Inf. Dis., iv, p. 31-57. WILSON, W. H. 1904. On the venom of scorpions. Rec. Egyptian Gov't School of Medicine, Cairo, ii, p. 7-44. INDEX Abscess, 178 Acanthia, 87 Acariasis, 58 Acarina, 23, 58, 131, 259 Acarus dysenteriæ, 132 Accidental parasites, 131, 132, 134 Aedes, 194, 293 Aedes calopus, 182, 201, 205, 206, 208 Aedes cantator, 101 Aedes sollicitans, 101 Aedes tæniorhynchus, 101 Aerobic bacteria, 152 Æstivo-autumnal, 186 African Relapsing Fever, 230 Akis spinosa, 177 Alternation of Generations, 175 Amblyomma, 264 Amblyomma americanum, 67 Amblyomma cajennense, 67 American dog tick, 228 Amœboid organism, 189 Anisolabis annulipes, 177 Anterior poliomyelitis, 241 Anopheles, 194, 291 Anopheles crucians, 199 Anopheles maculipennis, 182 Anopheles punctipennis, 198 Anopheles quadrimaculatus, 197 Anopheline, 192 Anthocoris, 279 Anthomyiidæ, 300 Anthomyia, 138 Anthrax, 165 Antipruritic treatment, 72 Ants, 42 Aphiochæta, 295 Apis mellifica, 36 Arachnida, 258 Araneida, 6 Argas, 64 Argas persicus, 63, 235, 237 Argasidæ, 62 Argopsylla, 317 Argus, 259 Arilus, 284 Arthropods, poisonous, 6 Asopia farinalis, 177 Assassin-bugs, 31, 219 Auchmeromyia, 117 Automeris io, 47 Avicularoidea, 12 Babesia, 226 Babesia bovis, 223 Babesia ovis, 225 Babesiosis, 221-222 Bacilli, 170 Bacillus icteroides, 202, 205 Bacillus pestis, 166 Bacillus typhosus, 153 Back swimmers, 30 Bdellolarynx, 304 Beauperthuy, Louis Daniel, 2 Bed-bug, 86, 88, 90, 173, 219-220 Bed-bug, cone-nosed, 92 Blister beetles, 54 Belostoma, 28, 277 Belostoma americana, 31 Belostomatidæ, 30 Bengalia, 314 Bird-spiders, 10 Black death, 1, 166 Black flies, 33, 104, 247 Black heads, 80 Blaps mortisaga, 134 Blepharoceridæ, 286 Boophilus, 264 Boophilus annulatus, 67, 223-225 Bot-flies, 112 Blue bottle flies, 140 Brill's disease, 238 Brown-tailed moth, 48 Bruck, 34 Buthus quinquestriatus, 21 Cabbage butterfly, 56 Calliphora, 136, 140, 312 Calliphora erythrocephala, 141 Calobata, 296 Camponotinæ, 43 Cancer, 254 Cantharidin, 54 Cantharidin poison, 55 Canthariasis, 134 Capsidæ, 280 Carriers, simple, 4, 144 Carriers of disease, 144 Carrion's fever, 253 Caterpillar rash, 45 Cat flea, 172 Cattle ticks, 222 Causative organism, 170 Cellia, 291 Centipedes, 25, 257 Ceratophyllus, 120, 316 Ceratophyllus acutus, 123 Ceratophyllus fasciatus, 122, 172, 213 Ceratopogon, 108 Cheese-fly, 137 Cheyletus eruditus, 271 Chigger, 60, 70 Chigoes, 126 Chilopoda, 25, 257 Chiracanthium nutrix, 18