A. reflexus 25 



smaller teeth. Legs as in A. persicus, except that the coxae are 

 contiguous and the tarsi (Fig. 33) have a more distinct dorsal promi- 

 nence. 



The sexes are distinguished by the same characters as in A. persicus. 

 The male (Figs. 27, 28) may attain 4x3 mm. ^ pore between coxae 

 II, % as in A. persicus (Megnin, 1880, p. 136 ; also Canestrini, 1890, 

 p. 532). The newly emerged female is about 5x3 mm., but when 

 gorged attains 8x4 mm. or even 9x5 mm. 



J-Z 



A 



V V v \ v- 



Fig. 33. A. reflexus. Tarsi I and IV of large nymph. Sketch. W. 



Nymphs measure 4x2 mm. (1st stage) or 55 x 42 to 7 3 x 4"8 

 (2nd stage), they resemble the male, but the larger ones are without a 

 true sexual aperture. 



Larvae almost spherical, L. 0"5 mm., at most 2 mm. (Megnin, 

 1880) with terminal or subterminal capitulum. Hypostome with 

 dentition 2 | 2. Colour testaceous. 



Eggs ovoid, reddish, "5 mm. I. 



The foregoing description is taken in part from Megnin, 1880, 

 Laboulbene and Megnin, 1882, and Neumann, 1896, pp. 4, 5 (con- 

 densed) ; the measurements of the nymphs were made on specimens 

 received by us from Germany in 1908. 



ARGAS REFLEXUS var. MAGNUS Nn. 1905. 



Figs. 30, 32 (see Synonymy above). 



This variety only differs from the type in its large size, its relative 

 narrowness, and the fact that the posterior border of the body is more 

 lanceolate. The details of the digit appear also to differ (compare 

 Figs. 30 and 31). Origin : Equador and E. Patagonia (Gulf of 

 St George). 



A. REFLEXUS. 



Hosts : Pigeons, the larvae have been found once on the horse 

 (Starcovici), and the nymphs and adults may attack fowls and man 

 occasionally. 



