140 first Annual Report 
symmetrical front lobes. Lower lip without inner lobes; outer lobes 
edged with long, slender spinules. 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 with 
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 sete 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 set; 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 jomt 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 finger extend quite to 
the apex of the palm. Perzopods one and two slender, nearly equal. 
Pereopods 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 sete. Uropod 
one extending almost to distal end of uropod three, pedunele 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 A. marionis, but differs 
especially in the characters of the mandible, maxillipeds, uropods, 
and telson. 
Laguna Beach, California. Common in Phyllospadix. Coll. V. 
R. Stout. 
Genus Dulichiella n. gen. 
Body slender; perron segment one the shortest, sixth and sev- 
enth not coalesced. Pleon of six segments beside the telson, third 
most elongate; some of the pleon segments toothed posteriorly. 
