284 



INDEX. 



Soap, against bed-bugs, 77 ; in 

 formula for larvicide for flies, 25. 

 socialis, Tdbanus. 



Soda, against mites on fowls, 111. 

 Soda Sulphur Dips, analysis of, 



224. 

 Sodium Arsenite, in baits and sprays 

 for house-flies, 100, 185, 186, 221. 

 Sodiunj Bicarbonate, ineffective 



against bed-bugs, 240. 

 Sodium Carbonate, in dip against 

 lice on domestic animals, 89 ; 

 against mange on horses, 42. 

 Sodium Fluoride, against ants and 

 cockroaches, 40 ; against lice 

 on domestic animals, 14, 45, 89, 

 170, 183 ; ineffective against bed- 

 bugs, 240. 

 Sodium Hypochlorite, against lice 



on horses, 37. 

 Sodium Polysulphide, value of, in 



dips for sheep scab, 224. 

 Sodium Sulphate, as a mosquito 

 larvicide, 137 ; for treating 

 horses infested with GastropMlus, 

 238. 

 Solenopsis geminata rufa, predaceous 

 on Lyperosia exigua in Australia, 

 119. 

 sollicitans, Aedes. 

 Somaliland, Pangonia transmitting 



trypanosomiasis in, 99. 

 sordida, Phormia ; Triatoma. 

 Sorex vulgaris, new Demodex in- 

 festing, 235. 

 soricinus, Demodex. 

 soudanense, Trypanosoma. 

 Souma (see Tryp<xnosoma cazal- 



boui). 

 spadix, Tabanus. 



Spain, Anopheles palestinensis in, 

 177 ; GastropMlus nasalis infes 

 ting man in, 112; Phlebotomus 

 spp. in, 49 ; Stegomyia fasciata in, 

 23 ; measures against mosquitos 

 and malaria in, 28, 177, 216. 

 Sparrow {Passer domesticus), try- 

 panosome in blood of, 229 ; at- 

 tacked by Phormia azurea, 155. 

 Spathicera pavesii (see Gyrostigma). 

 spathipalpis, Theobaldia (see T. lon- 



giareolata). 

 speciosus, Tabanus. 

 spenceri, Aedes. 



Spharagemon bolli, attacked by 

 Euthrombidium trigonum in North 

 America, 147. 

 sphinx, Papio. 



Spiders, predaceous on Glossina, 



99 ; toxicity of extracts of, 112 ; 



not attacked by Trombidium 



akamushi, 187. 



Spinose Ear Tick (see Ornithodorus 



megnini). 

 spinulosus,Polyplax{Eaematopinus), 



Spirochaeta crocidurae, infesting 

 rats at Dakar, 82, 103; experi- 

 ments in pathogenicity of, 11. 



Spirochaeta duttoni, causing relap- 

 sing fever in the Belgian Congo, 

 158 ; life-cycle of, in Ornitho- 

 dorus moubata, 138. 



Spirochaeta icterohaemorrhagiae, 

 probably not carried by insects, 

 165. 



spissipes, Culex (3Ielanoconion). 



spleiidens, Mimomyia. 



splendidum, Amblyomma. 



spretus, Melanoplus. 



squamosa, Neocuterebra. 



squamosus. Anopheles. 



stabulans, Muscina. 



stampflii, Crocidura. 



Stegomyia, conveying horse -sickness 

 in the Belgian Congo, 161 ; per- 

 centage of, in Gambia, 47 ; at 

 Jeddah, 61 ; breeding places of, 

 in the Virgin Islands, 49 ; try- 

 panosomes of Pycnosoma unable 

 to survive in, 34. 



Stegomyia africana, in Nigeria, 225. 



Stegomyia albopicta, in Formosa, 

 50 ; in Hawaii, 163 ; bionomics 

 of, in India. 64, 196 ; in Java, 

 213 ; experimental transmission 

 of dengue by, 195. 



Stegomyia calopus (see S. fasciata). 



Stegomyia fasciata, bionomics of, 

 at Accra, 15, 16 ; and yellow 

 fever in West Africa, 48, 202, 

 225 ; necessity for further mea- 

 sures against, in South America, 

 30 ; in Australia, 62, 227 ; on 

 coast of Black Sea, 78 ; distribu- 

 tion of, in Brazil, 91 ; in Ecuador, 

 192 ; in Formosa, 50 ; presence 

 of, in Southern France, 23 ; 

 presence of, at Genoa, 51 ; in 

 French Guiana, 160 ; in Hawaii, 

 163 ; in Java, 213 ; in Kentucky, 

 210; in Macedonia, 162, 201; 

 and three- day fever in the Island 

 of Rouad, 217 ; larva of, asso- 

 ciated with that of Theobaldia 

 longiareolata in Tunis, 106 ; in- 

 fected with Microfilaria bancrofti 

 in Zanzibar, 123 ; supposed trans- 

 mission of dengue by, 13, 213 ; 

 trypauosomes of Glossina palpalis 

 unable to survive in, 34 ; diffi- 

 culty of finding a repellent for, 

 69 ; natural enemies of, 16 ; 

 vitality of eggs of, 108. 

 Stegomyia luciensis, a variety of 

 8. fasciata in French Guiana, 160. 

 Stegomyia luteocephala, in Nigeria, 



225. 

 Stegomyia metallica, in Zanzibar, 



123. 

 Stegomyia pipersalata, in Java, 213. 



