EXPLANATION OF PLATE XVII. 



Pilumnoplax heterochir (Studer). Male (E.6211). Cara- 

 pace 11 ram. wide. 



Fig. 1. Dorsal view. 

 Fig. 2. Ventral view. 



Pilumnus fissifrons, Stimpson. Male (E.3184). Carapace 

 8 mm. wide. 



Fig. 3. Dorsal view. 

 Fig. 4. Ventral view. 



