PROCEEDINGS OF THE NATIONAL MUSEUM 



Figures 1-12.— Procambarus pecki: 1, mesial view cf first pleopod of first form male; 

 2, mesial view of first pleopod of second form male; 3, dorsal view of carapace of first form 

 male; 4, lateral view of first pleopod of second form male; 5, lateral view of first pleopod 

 of first form male; 6, epistome of first form male; 7, annulus ventralis of female; 8, basis 

 and ischium of third pereiopod of first form male; 9, antennal scale of first form male; 10, 

 caudal view of first pleopod of first form male; 11, bases of third, fourth, and fifth perei- 

 opods and first pleopods of first form male; 12, distal podomeres of cheliped of first form 

 male. 



