82 STALK- AND SESSILE-EYED CRUSTACEA 
Rostrum very short. Eyes concealed beneath the carapace. Internal 
antenne with two flagella. Anterior legs very large, unequal, one 
hand greatly developed, of variable shape, chelate, with the moveable 
finger uppermost. 
87. Alpheus socialis. 
Alpheus socialis, Heller, Voy. Novara, Crust. p. 106, pl. x, fig. 1, 
(1865). 
Rostrum very short, triangular, rising between the bases of the eyes, 
divided from the orbits by a deep groove, reaching to scarcely half the 
length of the first jot of the peduncle of the antennules, Orbits 
armed with a spinule in front, a little shorter than the rostrum. The 
basal scale of the antennules of the length of the first jomt, the second 
joint twice as long as the first. Antenne armed at the base with a 
long and acute spine, nearly reaching to the end of the second jomt of 
the peduncle of the antennules. Their basal scales very narrow in 
front, nearly triangular, shorter than the peduncles, with a large 
apical spine reaching beyond the end of the peduncle of the antennules. 
Anterior legs unequal, with the larger hand a little twisted outwardly 
towards the extremity; the palm compressed, the margins entire, the 
upper margin with two longitudinal ridges, the surface thinly pilose ; 
the fingers very short pilose. Legs of the second pair longer than 
those of the third pair, last pair rather robust, with the meros unarmed, 
the tarsus spinulose below, the finger acute, short. Length about 
Zin. (H.). 
Auckland (Heller) ; New Zealand (Coll. Brit. Mus.). 
Also found at Sydney (Heller). 
88. Alpheus novee-zealandix. Pl.-II, fig. 2. 
Alpheus nove-zealandie, Miers, Ann. Mag. Nat. Hist. (ser. 4) xvii, 
p. 224, (1876). 
Rostrum triangular, acute, rising at a considerable distance behind 
the bases of the eyes, separated from the orbits by a deep and wide 
eroove, and projecting beyond the frontal margin of the carapace to 
nearly the extremity of the first jomt of the inner antennex. Inter- 
ocular part of the frontal margin of the carapace straight, without 
spinules, considerably more prominent than the part exterior to the 
