208 



PROCEEDINGS OF THE NATIONAL MUSEUM 



are the most easily studied aspects of the ventral surface of the gnath- 

 osoma (Fig. 41.) 



15. Palpi.— Ea^ch composed of six segments: coxa, trochanter,, 

 fe7nur, genu, tibia, and tarsus; pattern of setation appears to be nearly 



O 



o 



o 



o 



a 



Figure 41.— Taxonomically important mouth parts of the Haemogamasinae: a. Dorsal 

 view of the gnathosoma of a female of Euhaemogamasus ambulans (Thorell) showing 

 epistome and chelicerae; b, ventral view of the gnathosoma of a female of E. ambulans 

 showing maxillary corniculi and setae. 



