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PROCEEDINGS OF THE NATIONAL MUSEUM vol. 112 



Figure 16. — Parathemisto gaudichaudii (Guerin), Gulf of Maine: a, Pereopod 2, carpal proc- 

 ess, seen from above. Parathemisto gracilipes (Norman), west of Kyusyu, Japan: b, 

 Same. Parathemisto japonica Bovallius, off Cape Esan, Japan: c, Head and antennae 

 female. Parathemisto libellula (Lichtenstein), Point Barrow, Alaska: d, Same; e, 

 pereopod 2, carpal process, seen from above;/, same, lateral view; g, antenna 1, lateral 

 view; h, mandibular palp; i, maxilla 1, palp; /, maxillipcd, inner plate and right outer 

 plate omitted; k, pereopod 1; /, pereopod 3; m, pereopod 4; 11, pereopod 5; 0, distal end 

 of uropod 3. Scale same for a-b, e-f, i-j, and l-m. 



