Gamasidcs. 105 



GENUS HYALOMMA. 



Species : H. Crassifarsus. H. yEgyp{tium. 



H. Affine. 



Family ARGASID^. 



Genus : Argas. Flat body. Proboscis beneath cephalo-thorax: 

 eyes wanting. Bloodthirsty and often venomous. 



Species : A. Americanus. Mammals. Texas. 



A. Chinche. Mammals. Columbia. 



A. Talaje. Mammals. Mexico. 



A. Coriaceus. Mammals. Mexico. 



A. Persicus. Venomous bug of Miani. Man, Fowls. 

 Persia. Very venomous. 



A. Tholazani. Body narrow. Man, Sheep, Mam- 

 mals. Persia. 



A. Pipistrellae. Mammals. Europe, Asia, Africa, 

 America. 



A. Mauritianus. Poultry yards in Mauritius. 



A. Miniatus. Poultry (Ox ?). America. S. States. 



A. Reflexus. Pigeons, man. 



Genus : Ornithodorus. Oval body ; lateral margins straight ; 



hood curved ventrally ; eyes present or absent. 

 Species : O. Turicata. Man, pig, fowl. S. America, Mexico, 

 Gulf States, United States. Often fatal. 

 O. Megnini. Spinous ear tick. I/yre-shaped. Cat- 

 tle, horse, ass, dog, sheep, man. Mexico. 

 O. Savignyi. Giant Tick. Man, Mammals. Sen- 

 egal, Africa, Guadaloupe. Very injurious. 

 Causes farcy in cattle. 



Family GAMASID^. 



Genus : Gamasus. Coriaceous integument. Mandibles with 

 claws. Larva hexapod. Lives in musty hay, 

 manure, etc. 



G. PteropTOIdBS. Body small, brown, ovoid, legs 

 long with claws. Fur of moles, field mice and rab- 

 bits. 



G. Fenilis. Musty hay. Accidentally on mammals. 



Genus : Dermanyssus. Acari of poultry house. Soft integu- 

 ment. Oviparous. Larva hexapode. 



D. Gallinse (Avium). Hen manure, roosts, etc. Man, 

 mammals. 



D. Hirundinis. D. of Swallow. Probably a variety. 



