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BULLETIN 2 01, UNITED STATEiS NATIONAL MUSEUM 



Pleopods of the female all biramous; in the first pair (fig. 24, g) 

 the rami are less than half as long as the peduncle, equal in length, 

 and armed with a few plumose setae; the distal margin of the basal 

 joint armed with several very long plumose setae; in the remaining 



Figure 24. — Archaeomysis maculata (Holmes): a, Antennal scale and peduncle, X 78; 

 b, first pleopod of male, X 100; c, second pleopod of male, X 100; d, third pleopod of male, 

 X 100; e, fourth pleopod of male, X 100;/, fifth pleopod of male, X 100; g, first pleopod 

 of female, X 100; h, second pleopod of female, X 100; i, third pleopod of female, X 100. 



pairs (fig. 24, h-i) the exopod is a very minute lobe tipped with two 

 setae, the endopod 1-jointed, longer than the peduncle, and armed 

 with several very long plumose setae. 



First pleopod of the male (fig. 24, b) with the peduncle equal in 

 length to the outer ramus and armed with several very long plumose 



