Cooley & Kohls: Argasidae of N. America, etc. 



57 



parken. Surface irregular and with a few transverse wrinkles; with a few 

 spines in a group on each side. Palpi long, longer than in parken, with surface 

 of all articles smooth. Article 1 with a knife-edge flange for the entire length 

 on the median side extending over the base of the hypostome; articles 2, 3, 

 and 4 free. 



Hypostome. — Long, sides nearly parallel and rounded apically. Denticles 

 arranged -/•>, with the large teeth limited to about the distaf two-fifths of the 

 length and with teeth in lateral and median files about equal in size. Length 



vr< 



Fig. 23. Ornithodoros turicata (Duges). A, Leg I of female. B, Leg IV of female. 

 C, Hypostome of female. D. Hypostome of male. E, Capitulum of larva, ventral view. 

 F. Larva, dorsal view. 



