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BULLETIN 2 01, UNITED STATES NATIONAL MUSEUM 



Basal plate of the exopod with the outer distal corner rounded and 

 without spine. 



Pleopods in the male of the type characteristic of the genus ; fourth 

 pair (fig. 55, k) with the exopod rather longer than the endopod 

 and terminating in a single long and rather stout plumose seta. 



Figure 55. — Mttamysidopsis elongata (Holmes): a, Right mandible with palp, X 100; 

 b> cutting edge of left mandible, X 330; c, maxillule, X 330; d, maxilla, X 100; e, eye, 

 X 100; /, peduncle of antennule, X 78; g, antennal scale and peduncle, X 78; A, first 

 thoracic limb, X 100; i, second thoracic limb, X 78; ;', third thoracic limb, X 78; k, fourth 

 pleopod of male, X 100; /, uropod, X 78; m, telson, X 100. 



Telson (fig. 55, m) short, two-thirds as long as the sixth abdominal 

 somite, one and a half times as long as broad, linguiform in shape 

 with the distal half much narrower than the proximal half; apex 



