of the Fishery Board for Scotland. 245 
(fig. 26): In the fourth pair the inner branches are two-jointed, and not 
much more than half the length of the outer branches ; a moderately long 
plumose seta springs from the inner margin of the first joint; and three 
similar sete from the inner margin of the second joint; the inner branches 
are also provided with two small apical spines (fig. 27). 
Remarks.—lIt is probable that the species described above may be new 
to science, as-it'does not agree very satisfactorily with any described species 
known to me; but in the meantime I prefer to place it under the Botryllo- 
philus ruber of Hesse, with which it agrees in some of its more characteristic 
features. 
HARPACTICID. 
Longipedia minor, T. and A. Scott. 
Specimens of this Copepod were obtained in a gathering collected at 
72 fathoms: in the Sound of Mull, on March 31st, 1900. There can be 
no reasonable doubt as to there being two distinct forms of: Longipedia, 
a larger (LZ. coronata, Claus), andia smaller (L. minor, T. and A. Scott), 
for ova-bearing females.of both are occasionally obtained. Whether the 
smaller form should be regarded as a species or a variety is.a question 
that is comparatively unimportant; the two terms are in not a few instances 
convertible, as their use depends to a large extent merely on one’s opinion 
as to the value that should be placed on certain observed differences either 
in structural details or otherwise. 
Canuella perplexa, 'T. and A. Scott. 
This fine species was obtained in tow-net gatherings collected In Dornoch 
Firth, near-Muckle Ferry, on May 19th, 1900. This is a new station 
for Canuella perplexa, 
Eucanuella, T. Scott (gen. nov.). 
Hucanuella is, in some respects, not unlike Longipedia, Claus, but is 
somewhat intermediate in structure between that genus and Canuella. 
Hucanuella differs from both of the genera named in the structure of 
the antenne, of the maxille and of the second maxillipedes, and to some 
extent in that of the first thoracic feet; it agrees with Canuwella in the 
structure of the second, third, and fourth pairs of feet, and to some extent 
in that of the first pair, but differs in that of the fifth pair; it agrees 
with Longipedia in the structure of the third, fourth, and fifth pairs of 
thoracic feet, and to some extent in that of the first pair, but differs in 
that of-the second pair. As there is but the one species of Hucanuella, a 
detailed description of the various points referred to will be found in the 
specific definition. 
Eucanuella spinifera, T. Scott (sp. n.). (Pl. XVIIL, figs. 1-10.) 
Description of the female.— Body elongated, moderately stout, gradually 
tapering towards the extremity of the abdomen ; length, 1°33 mm. (about 
zg of an-inch). The forehead terminates in a broadly conical rostrum, 
the apex of which is rounded. The first cephalothoracic segment is about 
as long as broad, and equal to fully the entire length of the remaining 
segments of the thorax, which are all’ moderately short. The. posterio- 
lateral angles of the fourth joint of the thorax and the first’ joint of the 
