Plate I (photographs). Ornithodoros, Argas. 
Ornithodoros savignyi caecus, Neumann. 
(a) Dorsal and ventral surfaces of female; (b) Ventral surface of male; (c) Ventral surface of nymph- 
(<1) Ventral surface of nymyh, just molted to octopod stage ; (e) Ventral surface of larva in resting stage’ 
Argas persirus, Fischer de Waldheim. 
(/) Larva; (g) Females (natural size) ; (h) Females enlarged ; (i) Margin of body of adult. 
A rgas vespertilionis, Latreille. 
(/■') Larva attached to bat’s wing; (l) Dorsal and ventral surface of male; (m) Dorsal and ventral surface of 
female : (n) Nympli, very much enlarged, showing arrangement of pits on the bodv ; (o) Margin of body of 
adult, showing shape of marginal pits ; (p) Adults feeding on a bat. ‘ J 
