NO. I 



INDEX 



425 



virgatum, Shmdinm, 195, 196, 275 

 Simulium (Dyarella), 169-171 



virgatum rubicunduluvi, Simulium, 194 



Volume of streams in relation to breed- 

 ing, 351, 358, 359 



volvulus, Onchocerca, 2, 3, 6, 7, 13, 37, 

 38, 39, 41-43, 47, 48, 327, 330, 333, 

 ZZ7, 3,72, 373, 375, 376, 378 



Waterfalls, 55 



Width of streams in relation to breed- 

 ing, 351, 352, 353 



Wright, Willard H., vii 



wrighti, Gigantodax, 59, 69, 74, 85, 

 107-111, 275, 277, 302-305, 343, 



wrighti, Gigantodax — continued 

 345, 348, 350, 353, 355, 357, 359, 361, 

 364, table 33, 415 



Simulium, 58 



Simtdium (Gigantodax), 107 



Yepocapa onchocerciasis zone, 14 

 ycpocapense, Simidium (Dyarella), 59, 

 71, 76, 81, 86, 17s, 176, 204-208, 

 292, 302, 303, 30S, 311, 312, 345, 348, 

 350, 351, 353, 355, 357, 359, 361, 363, 

 table 33, 415 



Zoophilic species, 45, 313, 341-342, 406- 

 413 



