Plate IVb. 
Fig. 4—Argas Miniatus. 
(Engorged females). 
A—Dorsal view. 
B—Ventral yiew. 
a, Rostrum. 
b, Legs. 
ec, Body, 
Fig, ¢—Boophilus Annulaius. 
(Mature, male). 
Fig. 7—Ornithodcros Megnini. 
(Section of skin, showing 
spines). 
5—Dermacentor Electus. 
(Engorged female). 
a, Prominent rostrum, 
b, Large white shield. 
ec, Legs. 
Fig. 
Fig. 8—Leg Boephilus Annu- 
latus. 
a, Tarsus, 
b, Pulvillum. 
c, Hooklets, 
