ISOPODS OF NORTH AMERICA. 



481 



oval in outline. Ocular processes rather thick and less prominent 

 than in Munna limicola. Caudal segment oblong oval, but slightly 

 narrowed behind, lateral edges 

 evenly convex, and each armed 

 in front with a single slender 

 denticle; apical lamellae dis- 

 tinctly serrated. Eyes rather 

 large, semi-globose. Supe- 

 rior antenna? scarcely reaching 

 to the middle of penultimate 

 peduncular joint of the inferior 

 ones; flagellum composed of 

 only four joints, including the 

 very small apical one. Inferior 

 antennae rather slender, with 

 the flagellum longer than the 

 peduncle. Legs comparatively 

 slender, though less rapidly in- 

 creasing in length posteriorly than in the two preceding species ( M. boecM 

 Kr0yer and M. limicola Sars); first pair, as usual, much the shortest, 



FIG. 538. MtJVNA FABRICII (AFTER HARGER). X 20. 



FIG. 539. MUNNA FABRICII (AFTER SARS). a, FIRST LEG. 6, FIRST ANTENNA, c, DORSAL VIEW. OF 

 FEMALE. d, SEVENTH LEG. e, -EXTREMITY OF SECOND LEG. /, SECOND LEG. g, ABDOMEN ANP 

 UROPODA. h, EXTREMITY OF ABDOMEN WITH UROPODA. i, UROPOD. 



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