570 



INDEX 



tor t'cnustus, 303; hosts of tectee 

 flies, 490, 498. 



Williams, Anna, 144, 194. 



Wohlftirtid maguificn, 521-522. 



\\"uo(Jrat.s, host of Trialoma prolracta, 

 112. 



Woodtiok, see Dcrmatcntor. 



WoucESTKu, D. (V, 320. 



Worms, 196 205; cla-s.-^ifu-ation, 19(); 

 flatworms in general, 196-198; 

 roundworms in general, 198-199; 

 annehds in general, 199-200; 

 parasitic habitats, 200; life 

 history and modes of infection, 

 200-201; effects of parasitism, 

 201-204; nutriment absorbed, 

 202; toxic effects, 202; infection 

 of wounds made by, 204; rela- 

 tion to appendicitis, 204; diag- 

 nosis, 201; eggs of, 205. See 

 also Intestinal worms and various 

 species. 



Wrigglers, 431. 



Wkight, R. E., 306. 



Wyeomyia smilhii, hibernation, 436. 



Xanihium mncrncarpwn, mites on 



leaves of, 341. 

 Xenopsylla cheopis, identification, 



408; and plague, 411, 412; 



intermediate host of Uynunn- 



lepis, 414; distinguished from 



Piilcx irritnns, 415; habits, etc., 

 417. 

 X-ray, for ulcerating granuloma, 73; 

 for Schistosoma infections, 215. 



Yaki.moff, W. L., 377. 



Yaws, 63-65; distribution, G3; spiro- 

 cluetes of, 03; course of, 63; 

 treatment, 64-65; prevention, 65. 



Yellow fever, in Panama, 2; relation 

 of mosquitoes to, 7, 443; para- 

 site of, 109, 184; 182-186; distri- 

 bution, 182-183; course of, 184- 

 185; treatment and prevention, 

 185; transmitting mosquito, 443- 

 448. 



Yellow fever group of parasites, 169, 

 182. 



Yellow fever mosquito, see Aides 

 calopus. 



Yersin, a., 411. 



Yokagawa yokngawa, 228. 



YoKKE, W., 100, 494, 496. 



YosHiDA, 222, 223. 



Yquitos, reduction of yellow fever, 

 185. 



Zambezi, danger of spread of Glossina 



pulpalis to, 498. 

 Zebu, po.ssiblo intermediate host of 



Tcpnia afritana, 245. 

 Zenker, F. A. von, 7. 

 Zepeda, p., 452. 



