140 jTirst annual Report 



symmetrical front lobes. Lower lip without inner lobes ; outer lobes 

 edged with long, slender spiuules. Mandibles with three-jointed 

 palp; third joint of palp longer than both the first and second, and 

 armed with short, scarcely discernible setules. Left mandible witli 

 inner plate, which is more finely toothed than the outer ; molar obso- 

 lete. First maxilla with small inner plate bearing a single spine at 

 the slightly concave apex; outer plate with seven spines at the oblique 

 apex, and a bunch of small seta? at the inner edge of the spine-row; 

 two-jointed palp with three short spines at the apex. Outer plate of 

 maxilla two-tipped with three compound spines, and fringed on the 

 outer margin with slender seta?; inner plate tipped with six com- 

 pound spines. Maxillipeds with slender inner plates reaching about 

 to distal end of the first joint of the palp, and bearing three short 

 spines at the apex; outer plate broader, extending a little beyond 

 the first joint of the palp, the broadly rounded distal margin bearing 

 one long spine, several small spines on the inner part, and finely 

 serrate on the outer part ; the joints of the palp gradually diminish- 

 ing in size from the first to the finger. 



Gnathopod one the smaller, fifth joint with spines extending 

 almost to the palm, which bears ten slender spines. Second gnath- 

 opod with the sixth joint widening to the oblique palm, the front 

 margin of which bears a row of twelve small spines, and at the apex 

 two strong spines; in neither one does the linger extend quite to 

 the apex of the palm. Peraopods one and two slender, nearly equal. 

 Perseopods three to five with second joint greatly expanded into a 

 broad, flat plate, gradually increasing in size to the fifth. The rami 

 of the subequal pleopods bear long, finely compound setse. Uropod 

 one extending almost to distal end of uropod three, peduncle much 

 longer than the subequal rami. Uropod two much shorter, the 

 peduncle of equal length with the inner ramus; the outer ramus 

 narrow and more than half as long as the inner. Uropod three 

 extending beyond uropods one and two; peduncle much longer than 

 the rami ; inner ramus the longer. Telson about half as long as the 

 peduncle of uropod three, about twice as long as broad, and con- 

 verging slightly to the pointed apex. Length '2 mm. 



This species resembles most closely ^4. iinirinitix, but differs 

 especially in the characters of the mandible, maxillipeds, uropods, 

 and telson. 



Laguna Beach, California. Common in Phyllospadix. Coll. V. 

 E. Stout. 



Genus Dulichiella n. gen. 



Body slender; peraeon segment one the shortest, sixth and sev- 

 enth not coalesced. Pleon of six segments beside the telson, third 

 most elongate; some of the pleou segments toothed posteriorly. 



