46 



Arachnida and Myriopoda 



Genus — Hyalomma, Koch. 



Hyalomma aegyptium, Linnaeus. 



Hyalomma aegyptium, L., is a very abundant tick in Africa, 

 and occurs also in Southern Europe and Asia. Its hosts are very 

 numerous, and include camels, cattle, and horses. This species 

 sometimes attacks human beings, and Eonsisvalle says its bite 

 produces morbid phenomena in man. 



Fig. 20. 



Hyalomma aegyptium, L. Dorsal and Ventral aspects of male, x 10. 



(After Neumann.) 



Genus — Margaropus, Karsch. 



Margaropus annulatus atistralis, Fuller. 



This cattle-tick has a very wide distribution in Central and 

 South America, and is the carrier of Texas Cattle Fever. In his 

 paper on the blood-sucking ticks and other arthropods of Jamaica, 

 Newstead states of this tick: "It is generally believed that the 



