284 ENTOMOLOGY FOR MEDICAL OFFICERS 



The adults of O. moubata probably live for years. The 

 eggs are laid in a clump on or in the ground. The larva 

 does its first moult within the egg-shell, so that when it 

 actually issues from the egg (in about eight days to three 

 weeks) it has four pairs of legs (Fig. 125). 



According to Christy, O. moubata is capable of trans- 

 mitting Filaria perstans. 



Ornithodorus Savignyi (Audouin). Differs from 0. 

 moubata in having two pairs of eyes, which are situated on 

 the supracoxal folds — one pair above the first coxae, the 

 other pair above the second intercoxal space ; it is also 

 more hairy, and the tarsus of the fourth pair of legs is longer 

 and slenderer. It is found in many parts of Africa, and 

 also at Aden and in South India. 



Ornithodorus coriaceus, Koch. Body distinctly though 

 bluntly pointed in front ; integument with mammillose areas 

 separated by smooth reticulose areas. Found in California, 

 Mexico, and Paraguay. Attacks man. 



Ornit/todorus turicata (Duges). Body elongate-oblong, 

 with nearly parallel sides and a distinct acuminate point at 

 the front end, the point covering the mouth-parts. Found in 

 Tropical America. It attacks man, and its bite is said to 

 cause suppuration and ulceration. 



Ornithodorus megninii (Dug^s). The body is rudely 

 hourglass-shaped, the lateral constriction between cephalo- 

 thorax and abdomen being very conspicuous. Integument 

 finely granular and punctate. Hypostome unarmed. In the 

 larva the integument is spinulose. Found in the tropical 

 and subtropical parts of America. It attacks the ears of 

 cattle, occasionally of man also. 



Ornithodorus talaj'e (Gu^rin). Body elongate-pentagonal, 

 the front end forming a distinct point which covers the 

 mouth-parts. There are lateral movable lips to the triangular 

 camerostome. The typical form is found in Mexico and 

 South America. A variety is found in various islands of 

 the South Atlantic and Indian oceans. Another variety is 

 known from Venice and the neighbourhood of the Sea of 

 Aral. It attacks man, and its bite is said to be very painful. 

 Nuttall, with his usual sedulous care, has noticed the 

 measures that, in different places have been adopted against 



