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



125 



Hood, camerostome and cheeks. — Absent. 



Capitulum. — Large, a little flattened on the ventral side. Surface smooth 

 and shining and with numerous long, barbed hairs. Palpi of moderate length; 

 articles 2, 3 and 4 free. 



Hypostome. — Short, broad and rounded apically; convex ventrally and 

 concave dorsally, thin and scoop-like; with numerous very fine denticles near 

 the rounded edge. 



Fig. 57. Distribution of Anlricola coprophilus (Mcintosh) and A. marginalus 

 (Banks). 



