List of Illustrations xix 



FIOCRE PAOE 



261. Ixodes signatus ?, capitulum and scutum, capitulum in ventral 



aspect, palp in profile, coxae, spiracle, 



tarsi 1 and 4, hypostome .... 262 



262. „ „ ^ , venter of gorged specimen 262 



263. ,, „ o , capitulum and scutum, capitulum in ventral 



aspect, coxae, anal groove, spiracles and 



tarsus 4 . 263 



264. „ „ L, capitulum and scutum, parts of venter, tarsus 3 263 



265. Ixodes unicavatus $ , capitulum and scutum 265 



266. „ „ o , capitulum and scutum, parts of venter, spiracle 



and tarsus 4 265 



267. „ „ L, capitulum and scutum, parts of venter and 



tarsus 3 265 



268. Ixodes loricatus <J , dorsum and venter 267 



269. „ „ 9 > capitulum in dorsal aspect .... 267 



270. Ixodes loricatus var. spinosus 9 , capitulum, scutum, parts of 



venter, etc. 269 



271. Ixodes coxaefurcatus £ , dorsum, venter, spiracle, tarsus 4 . . 270 



272. Ixodes vespertilionis <$ , venter 273 



273. „ „ £, capitulum in dorsal aspect .... 273 



274. „ „ £ , digit and hypostome 273 



275. „ „ ,$, leg 1 273 



276. „ „ J, foot 273 



277. „ „ ?, capitulum and scutum, parts of venter, 



spiracle and tarsus 4 ... 274 



278. „ „ $, hypostome and digit 274 



279. „ „ $?, capitulum in dorsal and ventral aspects . 274 



280. „ „ o, capitulum and scutum, parts of venter, 



spiracle and tarsus 4 . . . . 275 



281. „ „ L, capitulum in dorsal and ventral aspects, 



with scutum, coxae and tarsus 3 . 275 



282. „ „ L, digit 275 



283. Hypostome of Ixodes ricinus <$ , taken whilst copulating . . 305 

 284-287. Process of oviposition in Ixodes ricinus 309 



288. Ornithodorus moubata $ , with empty spermatophore attached to 



vulva 319 



289. A series of eggs of different species of Ixodoidea to show their 



relative sizes 330 



290-299. Hypostomes of Argasidae compared 332 



300-307. „ „ Ixodidae „ 343 



