170 



U.S. NATIONAL MUSEUM BULLETIN 261 



Figures 157-159. — 157, Tretogonia conspersa Schmidt (c and k from specimen 

 from Panama, plate not shown in c; others, from Rio Orinoco): j, right 

 pygofer process, ventral view; k, style and connective, dorsal view. 158, T. 

 cinerea (Osborn),*'paratype: j, pygofer, right side, ventral view. 159, T. con- 

 spicua Melichar, lectotype. 



