AMPHIPODS FROM NORTH AMERICAN WEST COAST — SHOEMAKER 403 



than peduncle and composed of about 14 joints, each of which carries 

 slender sensory filament. Antenna 2 nearly as long as body; third 

 joint not quite ji length of fourth, which is longer than fifth; flagellum 

 about Yi length of fifth peduncular joint and composed of about 6 

 joints. Last 1 or 2 flagellar joints missing in both first and second 

 antennae. Mandible with 3-jointed palp; second joint long, third 

 very short; cutting-edge toothed; spine-row of 6 spines; molar not 

 observed. Maxilla 1, inner lobe with 1 terminal seta; outer lobe 

 mth 5-6 spine-teeth; palp 2-jointed, bearing 7 spines on inner^ distal 

 margin of second joint. Maxilla 2 not observed. Maxilliped very 

 slender with rudimentary outer plate. 



Figure 6. — Proholoides pacifica (Holmes), male: a, antenna 1; b, antenna 2; c, gnathopod 2 

 female: d, gnathopod 2; e, end of gnathopod 2; /, pereopod 2; g, pereopod 5; h, uropod 3. 



