Figure 35. — Frequency distribution of keel-sulcus (K/S) 

 values (both sexes included) in Penaeus {M.) duorarum 

 notialis P6rez Farfante. 



j^-^-^^-^-X 



5 mm. 



Figure 37. — Pcnacus (M.) duorarum notialis Krez Far- 

 fante. Thelycum, $ 38 mm. c.l., off Las Piedras, 

 Gulf of Venezuela. 



524 



U.S. FISH AND WILDLIFE SERVICE 



