REV. A. MERLE NORMAN, M.A., ON THE CRUSTACEA. 275 
have one of their margins only plumose. The interior branch is 
two-jointed; the first joint has the entire length of the inner 
margin edged with spines of unequal length, and also some 
cilia of the same character as those of the peduncle on the basal 
half, there are likewise a few plumose cilia on the outer margin ; 
the second joint is half the length of the first; spined like it on 
the inner margin, and terminates in a strong, sharp, claw-like 
spine, from the outer base of which springs a long simple cilium 
which reaches considerably beyond the extremity of the claw. 
The exterior branch is in the form of a flattened oar-like blade, 
having the inner margin gradually rounded off to meet the outer. 
It slightly exceeds the length of the first joint of the interior 
branch and appears to consist of a single joint, although, at 
about one-third of its length there is an indication of a diagonal 
division across half of its breadth. The inner margin and apex 
are densely clothed with numerous and very long cilia. These 
cilia (Pl. XIII. fig. 8, 8a) are of a very remarkable character, having 
the shaft multi-articulate or annular, and the margins plumose. 
The outer margin of the exterior branch has a few much smaller 
cilia. 
The structure of the shell consists of numerous little semi- 
circular plates, which are granular on their surface, and over- 
lap each other like the tiles of a house (Pl. XIII, fig. 9). 
There are two pair of abdominal feet. Each foot consists of 
a large and broad basal joint ciliated on the inner edge, and 
two rami, the inner of which is one jointed, and the outer two 
jointed ; both furnished with very long plumose cilia. 
Length, six tenths of an inch, without the antenne. 
Dredged in deep water off Tynemouth. 
CYRIANASSA ELEGANS, n. sp. (Pl. XIV., fig. 1-6). 
Abdominis segmenta tria priora pedibus natatoriis instructa 
Antenne longissime. Telson elongatum, spines octo 
(duobus centralibus subtilissime ciliatis) terminalibus, 
spinaque gracili utrinque infra medium sita ornatum. 
Appendicum caudalium pedunculus inarmatus; rami ambo 
sparse spinosuli. 
Vit, We) IMS IR 21 
