Plate II. Ornithodoros, Argas. 
Ornithodoros sarignyi cciecvs (Neumann). 
(a) Rostrum of adult. 
(«) Hypostome of larva. 
(/) Hypostome of nymph. 
Argas persicus, Fischer de Waldheim. 
(o) Dorsal surface of adult, showing arrange- 
ment of pits. 
( d ) Showing difference between sexual pores 
of (1) nymph, (2) female, (8) male 
(after Lounsbury). 
(//) Rostrum of adult. 
Argas respertilionis , (Latreille). 
(jw) Mandible of larva. 
(q) Mandible of nymph. 
(/•) Mandible of male. 
(s') Mandible of female. 
(g) Hypostome of adults. 
( o ) Mandible of adult. 
(./•) Stigmatic opening of adult. 
(h) Hypostome of larva. 
(/.) Hypostome of nymph. 
(.;') Hypostome of male. 
(k) Hypostome of female. 
(Z) Mandible of male. 
(to) Mandible of female. 
( n ) Stigmatic opening of adult 
( t ) Hypostome of larva. 
( u ) Hypostome of nymph. 
(v) Hypostome of male. 
(w) Hypostome of female. 
