of the Fishery Board for Scotland. 388 
of the cephalon or thorax, but the abdomen, which was moderately 
elongated and cylindrical, was divided into four distinct segments, the 
first three of which were smaller than the last one; the last—or anal 
seement—was about as long as the combined length of the two that 
preceded it. The caudal furca were short and very divergent, extending 
outwards at almost right angles to the abdominal segment (fig. 34, 
Pl. XI1I.). The antennules, which showed very little jointing, were 
very shoré and stout except the end joint, which was a small one (fig. 
29, Pl. XIIf.) The antenne (fig. 30, Pl. XIII.) were also short and 
stout, and armed with a moderately strong but short and slightly clawed 
terminal spine. The mandibles with their palps resembled very closely 
the figures of these appendages given by Dr. Canu in his interesting 
work on the marine Copepoda (Les Copepodes du Boulonnais, Pl. XL, 
figs. 3 and 4). The biting part of the mandible is armed with five large 
teeth, arranged widely apart, and several minute, close-set, and slightly 
elongated spinules, while the palp ends in two short setiferous branches 
(fig. 31, Pl. XIII.). The maxille are broadly foliaceous, the masticatory 
lobe is armed with a series of spiniform sete along the margin, and 
a number of stout, elongated plumose sete adorn the margins of the 
maxilla-palp. The anterior foot-jaws are stont but simple one-jointed 
appendages furnished with several stout plumose terminal sete (fig. 37, 
Pl. XIV.). The posterior foot-jaws (fig. 32, Pl. XIII.) are moderately 
stout, and armed with a short but comparatively strong terminal claw. 
There are also a number of setee on the inner margin of these appendages. 
The first pair of thoracic feet (fig. 38, Pl. XIV.) are stout and moderately 
short ; both branches are three-jointed and of nearly the same length, and 
they are both provided with elongated and densely plumose sete on the 
inner margins. The next three pairs, which are somewhat similar to each 
other, have the inner branches short and slender and apparently three- 
jointed, while the outer branches, which are also three-joinied, are 
moderately stout and elongate; neither the inner nor outer branches were 
observed to carry sete, their only armature appeared to consist of one or 
two minute spines. ‘The fifth feet appeared to be obsolete, but this 
appearance may have been due to the specimen being somewhat 
imperfect. 
When it is remembered that the specimen here described was found 
free amongst a quantity of mixed dredgings, and not im situ in any 
Ascidian, and that, moreover, from the habitat of the animal its whole 
structure is more or less flaccid and more liable to injury than the stronger 
free-swimming forms, it need not be surprising that it should differ to 
a small extent from the more perfect and better preserved specimens. 
After a careful study of the characters of this Clyde specimen, I have 
little doubt that it belongs to the species to which it has heen ascribed. 
There does not seem to be any previous British record of Gunenotophorus 
globularis, and its occurrence in the Clyde estuary is therefore of interest. 
Botryllophilus (%) ruber, Hesse. 
1864, Botryllophilus ruber, Hesse, Ann. Sci. Nat. Zool. (5), t. 1., 
P]. XI1., figs. 1 and 2. 
I have noticed two, or perhaps three, specimens of a Botryllophilus in 
some material that was dredged at Tarbert Bank, Lower Loch Fyne, in 
the vicinity of Hast Tarbert. The specimens were not found in situ 
‘within any Ascidian, but were mixed up amongst the debris; their host 
had probably been damaged by the lip of the dredge so that they escaped. 
According to Dr. Canu, the characteristics of the genus Botryllophilus 
are shown particularly—First, in the structure and position of the thoracic 
feet ; second, in the almost constant existence of a single ovigerous sac of 
a strictly spherical form sheltered between the fifth feet. 
