FiGUBE 25. — Penaeus (M.) duorarum duorarum Burkenroad. a. Petasma, exterior surface, S 38.5 mm. 

 C.I., off mouth of Sabine River, Tex. b. Petasma. S 25.5 mm. c.l.. off mouth of Sabine Kiver, Tex. 

 c. Petasma, distal portion, $ 36.50 mm. c.l., off Melbourne Beach, Fla. d. Petasma, distal portion, 

 S 33.5 mm. c.l., off Sebastian, Fla. e. Appendix masculina, $ 38.5 mm. c.l., off Bdgewater, Fla. 

 f. Appendix masculina, S 39 mm. c.l., off mouth of Sabine River, Tex. 



WESTERN ATLANTIC SHRIMPS OF GENUS PENAEUS 



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