Ixodoidea. Ticks. 123 



Coxae I bicuspid. Sikkim. /. Ltevis. 



Coxse I with short spine. Africa. /. Luteus. 



Coxae I with long spine. Brazil. /. Spinosus. 



Genus Eschatocephalus. 



Capitulum long. Palpi pyriform (male), claviform (female). 

 Eyes wanting. Anal groove surrounding anus in front and 

 opening backward. Stigmata circular in both sexes. Dorsal 

 and ventral irregular chitinous thickenings in the male ; striae or 

 fine parallel grooves in the female. Legs usually long. 



Type Species. E. Gracilipes-Vespertilionis. 



Genus Aponomma. 



Eyes wanting. Base of capitulum usually pentagonal, the 

 dorso-lateral border very short. Palpi long. Male as broad as 

 long, or nearly so : ventral surface naked, sexual grooves very 

 divergent backward, and groove semicircular or ogival, opening 

 in front, uniting the sexual grooves : ano-marginal grooves single. 

 Scutum covering entire dorsal surface and usually marked with 

 metallic green spots. Stigmata comma-shaped. Female with 

 scutum nearly or quite as broad as long, with, usually three 

 metallic green spots in triangle. Ventral grooves as in male. 

 Stigmata shorter, less attenuate at postero-lateral extremity. 



KEY TO SPECIES OF GENUS APONOMMA. 



Scutum green spots five in number (male), large, well apart 

 (female). A. Gervaisi. 



Scutum green spots, nine in number (male) : tarsi with spurs 

 (female). A. Exornatum 



Scutum channeled by fossettes : body much broader than long 

 (female). A. Transversale . 



Tarsi II to IV narrowed at extremity (male) : spots on scutum 

 few, fine (female). A. Lceve. 



Tarsi II to IV with terminal tuberosity (male). A. PolUum. 



Scutum with light spots (male) ; tarsi 3 times as long as broad 

 (female). A. Decorosum- 



Tarsi II to IV narrowed at extremity (male) ; numerous deep 

 scutum punctations (female). A. Trachysauri. 



Tarsi II to IV with terminal tuberosity (male). A. Concolor. 



