Plate II. Ornithodoros, Argas. 



OrnWiodoros: .mr'Kjnijl cdervx (Neumaini). (c/) Hypostome of adults. 

 («) Rostrum of adult. (o) Mandible of adult. 



(f) Hypostomc of larva. (.r) Stioniatic opening of adult. 



(/) Hypostome of nympb. 



A)'ga.\ jicrsiciis^ Fiscliei' de Waldlieim. 



(c;) D(.)rsal surface of adult, sliOAving arrange- 

 ment of ])its. 



(rZ) Showing difference between sexual pores 

 of (1) nymph, (2) female, (8) male 

 (after Lounsbury). 



(//) Kostrum of adult. 



AvguK ve^pert'tVtoit'ts^ (Latreille). 

 (yy) Mandible of larva. 

 ((/) Mandible of nymph, 

 (y) Mandible of male. 

 (J) Mandible of female. 



(A) Hypostome of larva. 



(/) Hypostome of nymph. 



(./') Hypostome of male. 



{li) H^ypostome of female. 



(/) Mandible of male. 



(w) Mandible of female. 



(«) Stigm'atic opening of adult. 



(0 Hypostome of larva. 

 ('m) Hypostome of nymph, 

 (y) Hypostome of male, 

 (/y) Hypostome of female. 



