146 first Annual Report 
Acanthogrubia uncinata n. sp. 
(Figures 81, 82 and 83) 
Entire body varying between the two tones of orange-green 152 
and 177 (Valette). Flagella of antenne ringed with white. Hyes 
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, aecessory 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 
first; flagellum thirty-one-jointed. Mandible, palp stout, third joint 
fringed with compound sete on the broadly rounded apex, principal 
and secondary 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 sete. Maxil- 
lipeds, outer plates fringed with two rows of short spines; inner 
plate thickly fringed with long, compound sete. 
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 gnathopod one, 
but with shorter and broader fifth joint; enlarged sixth joint, with 
palm distinct and curved, finger longer than palm and_ faintly 
serrate. Perezopods one and two, second joint long and narrowly 
rectangular, sixth joint narrowing distally. Perwopod three, second 
joint expanded, as broad as long, sixth joint with fine spines. Perso- 
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, 
pedunele 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 sete. Telson as broad as long. Length 
8-23 mm. 
Laguna Beach, California. Occasional in tubes in kelp holdfasts 
from deep water. Coll. V. R. Stout. 
