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joint is very sparsely furnished with short hairs both on the anterior and the posterior sides;
along the distal boundary of the last-mentioned joint there is on the outside a series of short,
stift’ hairs, often somewhat longer than the other hairs.
Second antenna: — Distally on the inside close to the exopodite the prot
o-p o d i t e has a very short bristle. The exopodite lias four bristles on the end joint.
The fourth to the ninth joints (on the Naples specimen the third to the ninth joints) of this
brandi have basal spines, which decrease in size and strength the more proximallv they
are situated, the one on the fourth joint being scarcely perceptible. The endopodite
(fig. 5) is small with scarcely distinguishable joints; its end bristle is about twice the
length of the stem.
Mandible: — Protopo dite: — Coxale: The scythe-shaped process (fig. 7):
The part situated distally of the main spine grows uniformly and gently narrower into a fine
point; its ventral edge is even and somewhat convex. The distance from the point of the process
to the main spine is about as great as the distance from the latter to the proximal ventral spine.
The dorsal bristle is attached somewhat nearer the point of the process than its distance from the
main spine and is situated somewhat more than half its length distally of the latter; it extends
to a distance of not quite half its length beyond the distal point of the process. The dorsal
serrate teeth are exceedingly small; they seem sometimes practically even to be absent ; they are
not indicated in the figure. The main spine is rather small. There are four or five ventral spines,
the proximal one of which is rather strong, the rest are very weakly developed. On the part
situated distally of the main spine there are about eight or nine transverse rows of hairs. The
rod-shaped process is blunt distally and is there furnished with three short, fine, bristle-like
points. Basale: The backwards pointing process has three or four distal bristles, four triaena
bristles and one dwarf bristle. The triaena bristles have from one to six pairs of secondary
spines under the distal pair of spines. The peg on which the glands emerge is rather small.
The dorsal side of this joint is quite smootli, without either hairs or bristles. The
exopodite (fig. 6) is, if we include its two distal bristles, about as long as or slightly
longer or shorter than the anterior side of the first endopodite joint. Endopodite
(fig. 6): Of the three ventral bristles on the first joint the shortest one has short hairs, the
two others have, proximally of the long secondary bristles, respectively about six to nine
and ten to sixteen pairs of short secondary bristles. Antero-distally this joint is not armed
with chitinous spines. Second joint: This has only one proximal bristle, which is about
a fifth of the length of the main bristle a. Between the main bristles b and c there
is a long, narrow bristle with short hairs. The medial cleaning bristles are relatively few;
the specimen from the coast of England that 1 was able to investigate showed the followmg
arrangement of these bristles:
Right mandible J
5 bristles in a distinct lower row.
2 ,, below the main bristle b.
Left mandible
(i bristles in a distinct lower row.
2 ., below the main bristle b.
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