20 GENERAL 
Sand-flies (see Phlebotomus). 
sanguineus, Rhipicephalus, 212, 319, 322, 
324, 326. 
sarawaki, Oculeomyia, 259. 
Sarcopsyllidae, in N. Nigeria, 325, 346. 
Scale Insects, African, observations on, 
85-104. 
scapularis, Leucomyia, 247, 256. 
* Ochlerotatus, 247. 
scataphagoides, Mucidus, 246, 319, 345. 
semicinctum, Colpocephalum, 149. 
secedens, Tabanus, 182, 202, 320 346. 
Sena (Mozambique), cattle trypanoso- 
miasis in vicinity of, 41. 
Senegal, French, possibility of diseases 
being carried from or into, 195. 
senegalensis, Haplochilus, 137, note. 
sergenti, Culex, 265. 
Sierra. Leone, outbreak of Yellow Fever 
in, 127 ; Culicinae in, 246, 259, 263, 265. 
silacea, Chrysops, 166, 341-344 
simillimus, Cyclops, 129, 130, 134. 
simpsoni, Culex, 263. 
ee in N. Nigeria, 317, 319, 324, 
simus, Ehipicephalus, 321, 322 324-8326, 
328. 
sinensis, Culex ager, var., 259. 
5,  Leucomyia, 259. 
7 % gelida, var., 259. 
Siphonaptera, new, from Nyasa, 269-272 ; 
in N. Nigeria, 322, 325, 346. 
sjoestedti, Colpocephalum, 149. 
Sleeping Sickness, occurrence in Dowa 
district, Nyasa, 112; in Gambia, 187, 
note, 188, 205, 210, 214, 223 ; camps for, 
224, 353, 355; method of minimizing 
spread of, 225; not in Tlesha and 
and Oshogbo districts, 8. Nigeria, 276 ; 
colour convention for, 297, 298 ; occur- 
rence in N. Nigeria, 331-333, 337-339, 
344, 352, 353; native names for, 347 ; 
no case discovered in villages on Garara 
River, 352 ; sporadic in Baro, 352, 353 ; 
natives of W. Africa though immune 
may act as reservoirs of, 353. 
socialis, Tabanus, 208, 209. 
somaliensis, Culex, 261. 
Somaliland, British, occurrence of Stego- 
myia fasciata in, 179 ; new Tabanus in, 
176 ; Culex in, 261. 
spathipalpis, Theobuldia, 251. 
INDEX. 
Sphaerococcus draperi, synonym of S. 
marlatti, 104, 
qi marlatti, common in Lower 
Egypt, 104 ; remedy for, 
104. 
sphing, Papio, 206, 207, 223. 
Spilopsyllus cuniculi, 269. 
spinosum, Menopon, 149. 
spirocarpoides, Acacia, 116. 
Sporozoa, found in Anophelines, 6. 
Sporozoits in mosquitos, methods for 
detecting, 1-8. 
Steamers and Launches, tsetse invading, 
190, 198, 202, 204, 205, 207-210 ; effec- 
tive mosquito proofing for, 226 ; mos- 
quitos breed in “ bilge water” on, 354. 
Stegomyia africana, bites only at dusk, 
PH 
- Jfasciata, identification of larva 
of, 127 ; distribution of larva 
at Lagos, 131, 135 ; number 
of vesseis in which were 
found larvae of, 130; sea- 
sonal variation of larvae of, 
131 ; occurs in Sudan, 179 ; 
may transmit virus of horse- 
sickness, 179; vector of 
dengue fever, 179; abun- 
dant in coast towns of 
British Somaliland, 179; 
variations of, 179; in 
Gambia, 188, 195 ; pale var. 
common in Algeria, 248 ; 
in N, Nigeria, 318, 319, 328, 
351, 354, 355. 
3 longipalpis, 268. 
e pollinctor, synonym of S. longi- 
palpis, 268. 
stenopygus, Akidoproctus, 148. 
Stethomyia, considered distinct, 
141; 
Neostethopheles, synonym of, 141. 
Stomowys, cattle trypanosomiasis spread 
, 41; as a_ protozoal 
carrier, 223 ; inoculation ex- 
periments should be carried 
out with, 323. 
> calcitrans, empty pupae of in 
caves of Notabile, Malta, 48 ; 
in Gambia, 197, 207, 208 ; in 
N. Nigeria, 319-321, 323, 324, 
327, 333, 346. 
m nigra, in Gambia, 201, 202, 207, 
208 ; common in Oshogbo, 
S. Nigeria, 275 ; in N. Nigeria, 
pi 319-321, 323, 324, 327, 
346, 
