74 
New Species of Ixodidcie, etc. 
Fig. 21. Boophilus australis s . From Ceylon, showing abnormalities, x 21. (G. H. F. N.) 
Fig. 22. Boopliilus decoloratus <? . Monstrosity, x 21. (G. H. F. N.) 
Fig. 23. Fig. 24. 
Figs. 23, 24. Rhipicephalus sanguineus <? . Normal. Ventral aspect of fed (23) and 
unfed (24) specimens from India. (G. H. F. N.) 
Fig. 22 illustrates a monstrosity, a B. decoloratus which was 
raised in Cambridge in July, 1907, from a batch of larvae sent to us from 
Cape Colony, by Mr C. P. Lounsbury. In this specimen there are two 
ani and two caudal spines, the median pair of adanal shields being 
slightly underdeveloped as compared to their mates on the outer sides 
