U. S. NATIONAL MUSEUM 



BULLETIN 158 PLATE 41 



Paeon elongatus. New Species: Development stages 



a, Newly hatched metanaupHus, ventral; 6, copepodid stage, dorsal; c, first antenna; d, second 

 antenna; e, mouth parts, ventral; /, second maxilla; g, maxilliped; h, first leg; ;', second leg. 



