234 Transactions.—Zoology. 
appendages long, projecting considerably beyond the tail, falciform, acute, 
curved inwards; the inner much shorter, sub-rectangular, longer than 
broad, truncated at the apex. Claws short, subequal, hooked. Reddish 
brown. Length -6 inch. Kaikoura Harbour and Stewart Island. 
Norz.—Since writing the foregoing description, I have seen, through 
favour of Dr. Haast, the Atlas of the Crustacea described by Dana in the 
Zoology of the U.S. Exploring Expedition. From the figures alone (not 
having been able to obtain a description), l think that this tennis may 
prove to be identical with A. australiensis, Dana. 
Genus Cymodocea, Miers’ Cat., p. 118. 
Sub-genus Dynamena, Leach, Dict. Sec. Nat., t. 12., p. 343. 
Terminal segment of the abdomen simply notched, but without a median 
lobe. Rami of caudal appendages lamellate, as in Spheroma. 
7. Dynamena huttoni, nov. sp. Fig. A.6. 
Moderately convex, nearly smooth, marked with numerous minute 
granulations. Head small, twice as broad as long, with small obtuse 
frontal lobe. Segments of thorax subequal, the three last slightly produced 
backward at their infero-posterior margins, the last with a slightly rounded 
lobe, just overlapping the edge of the abdomen. First segment of abdomen 
with four lines of articulation, the last of which has a tooth on each side on 
its posterior margin. Last segment triangular, swollen above, ending in 
two short acute teeth, with a rounded sinus between them. Rami of 
caudal lamelle equal, oval-oblong, obtuse. Orange-yellow colour. Length 
'5 inch. 
Dunedin. 
I have named this species after Professor Hutton who collected it. 
Genus Nesea, M. Edw., Hist. Nat. Crust., iii., p. 216. 
Body not very flexible, and incapable of being rolled into a ball. Ex- 
ternal ramus of the caudal lamelle projecting, thick and rounded, incapable 
of being folded beneath the inner. Inner rami united to the inferior 
margin of the abdomen and earried transversely underneath it, so as to be 
easily mistaken for it. 
8. Nesea caniculata, nov. sp. Fig. A.7. 
Body very convex ; roughly granulated, particularly towards the abdomen. 
Head prominently rounded. Eyes black, triangular, received into a deep 
indentation in the margin of the first thoracic segment; an intra-marginal 
groove extending between the eyes round the front of the head. Frontal 
lobe small, obtuse. Basal joint of inner antenne large, and adhering 
nois to the head, second joint short and rounded, third slender. Outer 
