FiGUBE 46. — Penaeiis (M.) aztecus aztecus Ives. a. Petasma, exterior surface, S 36 mm. c.l., off Matagorda Bay, Tex. 

 b. Petasma, interior surface, S 36 mm. c.l., off Matagorda Bay, Tex. c. Petasma, distal portion, <5 37 mm. c.l., 

 off Matagorda Bay, Tex. d. Petasma, lateral view, $ 35 mm. c.l., off Sebastian, Fla. e. Appendix masculina, 

 S 37 mm. c.l., off Matagorda Bay, Tex. 



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U.S. FISH AND WILDLIFE SERVICE 



