AMPHIPODS FROM NORTH AMERICAN WEST COAST — SHOEMAKER 401 



Figure S. — Metopelloides dubia, new species, male: a, antenna 1; b, antenna 2; c, mandibular 

 palp; d, cutting-edge and accessory plate of right mandible; e, maxilla 1;/, maxilliped; 

 g, lower lip; h, gnathopod 1; i, gnathopod 2; ;, end of gnathopod 2; k, pereopod 1; /, 

 pereopod 2; m, pereopod 3; n, uropod 3; o, telson. 



of joint bearing row of very fine spinules (fig. 5/) ; palp rather short, 

 first joint slightly longer than subequal second and third; fourth joint 

 slender, curved, bearing nail and row of fine spinules on inner margin. 

 Lower lip with widely separated lobes; mandibular processes very 

 short, blunt. 



Coxal plates 2-4 much deeper than their body segments. Coxal 

 plate 2 extending forward to front of head. Gnathopod 1, second 

 joint about as long as fifth and sixth joints combined; third, fourth, 

 and fifth joints equal in length, third with small downward-pointing 

 lobe; sixth joint narrowing distally, without palm; seventh joint nearly 

 ji length of sixth, inner margin armed with fine closely set teeth and 



