of the Fishery Board for Scotland 253 
somewhat widely apart. The ovisacs are very large, and the point at 
which they are attached to each side of the genital segment is nearer 
their posterior than their anterior ends; they thus occupy a rather 
peculiar position in relation to the body of the Copepod ; the ovisacs 
are of an elongate-oval form, and from the peculiar manner in which 
they are attached to the genital segment, they extend forward along each 
side of the body of the Copepod instead of backwards, as in the 
majority of Copepods which carry two ovisacs. It was the peculiar 
position of the ovisacs that attracted my attention to this specimen, 
(fig. 12). 
The antennules are short and six-jointed, the second joint is consider- 
ably longer than any of the others ; the formula shows the proportional 
lengths of all the joints :— 
Numbers of the joints, are, eine Cae ee A ore 4 ge eeae 
Proportional lengths of the joints AS i tees, so) oA REM eh eh alan ee a ghiahO 
The joints are sparingly setiferous, and taper very gradually from the 
proximal to the distal end (fig. 14). 
The antenne are very small, they each consist of a single two-jointed 
branch, armed with about six terminal sete; the three middle sete are 
moderately elongated, but the others are short; the joints of the 
antennz are sub-equal and nearly three times longer than broad (fig. 15). 
The mandibles have a remarkable resemblance to those of the 
Lernzopodide ; they are moderately elongated, narrow, and somewhat 
cylindrical ; they taper slightly from about the middle of the distal 
extremity, the inner margin is denticulate from about the middle to the 
apex of the mandible (fig. 16). 
The maxille are very rudimentary; they are somewhat papilliform, 
and furnished with about four moderately stout spines (fig. 17). 
The first maxillipedes are moderately stout, but of a somewhat 
rudimentary structure; they appear to be each composed of two joints, 
the first is comparatively tumid, the second is smaller and terminates 
in a boldly rounded apex finely serrated on the margin (fig. 18). 
The second maxillipedes are large and strong; they are each com- 
posed of two joints, the basal joint is considerably larger than the other, 
the second is armed with a short but stout claw, the margin of which 
is convex and fits into a corresponding hollow in the joint to which it is 
articulated (fig. 19). 
Thoracic jfeet.—There appear to be only two pairs of thoracic feet, 
which are similar to each other in size and structure. They appear to be 
each composed of a single two-jointed branch of moderate length, 
furnished with two somewhat elongated and two or three very small 
sete (fig. 20). The position of the thoracic feet is somewhat abnormal ; 
one pair is almost in line with, and outside of the second maxillipedes, 
the other pair occupy a somewhat intermediate position and somewhat 
further forward, as shown in figure 13, 
Habitat.—Dredged at Tarbert Bank, Lower Loch Fyne, in 17 to 20 
fathoms, October 28th, 1899. One specimen only—a female—was 
observed. 
Remarks.—This somewhat curious Copepod, which I have now tried 
to describe, is in some respects not very unlike Cancerilla tubulata, 
Dalyell. It has a somewhat similar squat form, large ovisacs, and short 
six-jointed antennules ; while, as regards the form of the mandibles and 
maxille, and especially of the latter, the disparity is not very great; it is 
only in the structure of the antenne, the maxillipedes, and the thoracic 
feet that the most marked differences are observed. The antenne are 
