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between these there is a carinate epibranchial tooth, and another 
(hepatic) more advanced lower down on the side. A tooth 
bounds the orbit externally, and an antero-lateral tooth is pro- 
duced about to a level with the rostral apex. Not far behind 
the antero-lateral there is a little lateral denticle, figured but 
not mentioned by Smith. For P. junceus Bate does not either 
in figure or description introduce this denticle or the pair on the 
rostrum. 
The first segment of the pleon has a fringe of forward-pointing 
setules on the front margin of its second division, the third, 
fourth and fifth segments have similar fringes on the hind 
margin directed backwards. All the segments have the lower 
margins setose. The long sixth segment is not clearly sulcate 
on the back. The long narrow, dorsally-flattened telson has 
on the lower half two pairs of little spines, of which Smith gives 
no indication, but which appear in Bate’s figure of P. junceus. 
The apex carries two elongate plumose spines, flanked by a 
pair of strong spines scarcely a third as long, and these by a pair 
of quite small spines. Smith speaks of “ the narrow tip armed 
with four very slender spines, of which the median are twice as 
long as the lateral.” In Bate’s P. junceus this armature is left 
quite indistinct. 
The eyes are large, closely contiguous, the cornea extensive, 
the colour in formalin orange-brown. 
The first antennae have the first jot more than twice 
as long as the second, the point of the lateral process reaching 
the apex, at some distance behind which the joint has a neat, 
almost circular orifice, probably auditory. The shorter flag- 
ellum is about as long as the peduncle, its companion by about 
a fourth of its own length longer, this one carrying long sete 
except towards the end; both flagella have the first joint 
elongate, the remaining joints short. 
The scale of the second antennae is between three and four 
times as long as broad, narrowing a little to the rounded apex, 
which like the lateral margin is fringed with long plumose 
setee, the terminal tooth of the unarmed margin not being 
outstripped by the rounded apex. A rather long and very 
slender detached flagellum, grasped by the first cheliped, 
probably belonged to the specimen. 
In the third maxilliped the last joint is a little longer than 
the penultimate, by no means “almost twice the length ” 
as in Leach’s original definition of the genus. 
The first peraeopods have a distal tooth on the outer margin 
of the fourth joint, which is fringed with setee on both margins. 
The very short fifth joint has a tooth on the inner apex. The 
sixth joint is widest at the apical tooth of the inner margin, 
