8 STALK- AND SESSILE-EYED CRUSTACEA 
maxillipeds finely denticulated on their inner margins. Legs slender, 
elongate ; abdomen broad. Colour, reddish yellow. (J. & L.) 
Auckland Is. (Hombron and Jacquinot). 
In this species the depressions separating the regions of the carapace 
are scarcely marked, the tubercles are longer and more acute towards 
the margins, the colour on the exposed parts of the carapace and 
anterior legs reddish, mottled with yellow. A specimen of an adult 
female exists in the British Museum Collection. Length, 23 in.; 
breadth, 2 in. 
> 
7. Leptomithrax longimanus. PI. I, fig.3. 
Leptomithrax longimanus, Miers, Ann, Mag. Nat. Hist. (ser. 4) xvii, 
p. 220, (1876). 
Carapace triangular, branchial regions convex on the sides, depression 
separating the branchial from the gastric, cardiac, and hepatic regions 
deep and well defined, carapace covered, as are also the arms and wrists, 
with a very close velvet-like pubescence, and with small scattered 
granules, Spines of rostrum long. Antero-lateral margins destitute of 
spines. Anterior legs very long, about twice as long as the carapace, 
hand slender, cylindrical, and minutely granulous. Ambulatory legs 
slender, covered with a close pubescence, decreasing regularly in length 
from the first to the last. Length, 13 in.; breadth, 14 in. 
New Zealand (Coll. Brit. Mus.). 
At once distinguished by the great length of the anterior legs, and 
the absence of spines on the antero-lateral margins. 
The male only is known. 
HYASTENUS. 
Hyastenus, White, P.Z.S., xv, p. 56, (1847). 
Carapace triangular, with the sides straight, rounded behind, usually 
convex on the branchial regions. Spines of rostrum long, divergent. 
Supra-ocular spine small or obsolete, directed outward, with a fissure 
above and below. Orbits small, upper margin not projecting. Eyes 
completely retractile. Basal joint of the external antenne rather long, 
without spines at its distal extremity. Anterior legs in the male 
unarmed, not nearly as long as the first pair of ambulatory legs, 
which are longer than any of the succeeding. Abdomen of ¢ seven, of 
@ five-jointed. 
