JTicst annual Hcport 



Acanthogrubia uncinata n. sp. 

 (Figures 81, 82 and 83) 



Entire body varying between tbe two tones of orange-green 152 

 and 177 (Valette). Flagella of antenna? ringed witb white. Eyes 

 bright rose. 



Body robust. Head produced in front of eyes. Side-plate one 

 produced forward. Side-plate five with very deep front lobe and 

 small hind lobe. Eyes small, subrotund. Antenna one, first joint of 

 peduncle slightly longer than second, and four times as long as third; 

 flagellum forty to sixty-jointed, accessory flagellum as long as first 

 four joints of primary flagellum. Antenna two, stout, setose; sec- 

 ond joint of peduncle longer than third, and about twice as long as 

 lirst; flagellum thirty-one-jointed. Mandible, palp stout, third joint 

 fringed with compound setae on the broadly rounded apex, principal 

 and s ..... mdary plates dentate, toothed spines in spine-row, molar 

 small. Maxilla one, outer plate with ten spines, second joint of palp 

 broad with nine small spines around the apex and inner margin, 

 with a diagonal row of slender setules around the whole joint. 

 Maxilla two, both plates thickly fringed with compound setae. Maxil- 

 lipeds, outer plates fringed with two rows of short spines; inner 

 plate thickly fringed with long, compound setae. 



Gnathopod one, fifth joint long, but not so long as the oval 

 sixth; sixth joint setose, palm not defined, finger faintly serrate. 

 Gnathopod two in female thickly setose, similar to guathopod one, 

 but with shorter and broader fifth joint; enlarged sixth joint, with 

 palm distinct and curved, finger longer than palm and faintly 

 serrate. Per.Topods one and two, second joint long and narrowly 

 rectangular, sixth joint narrowing distally. Peraeopod three, second 

 joint expanded, as broad as long, sixth joint with fine spines. Peraeo- 

 pods four and five much longer and proportionately narrower; sec- 

 ond joint somewhat expanded and narrowing towards the distal end ; 

 sixth joint with six spines and not narrowing distally. Pleopods 

 with unequal rami fringed with long compound spines. Uropods one 

 and two, peduncle longer than the unequal rami. Uropod three, 

 peduncle a little longer than the rami, with a transverse row of 

 short spines on the apical margin; outer ramus with two spine-like 

 hooks ; inner ramus broader with a transverse row of short spines, 

 one apical spine, and a row of seta?. Telson as broad as long. Length 

 8-23 mm. 



Laguna Beach, California. Occasional in tubes in kelp holdfasts 

 from deep water. Coll. V. E. Stout. 



