of the Fishery Board for Scotland. ikl) 
the past summer, was found to contain many copepods, some of them 
being rare forms; several specimens of Stephos scotti were obtained in 
this gathering, and they included both males and females. The dissections 
of both species corresponded exactly with Prof. G. O. Sars’ description 
and figures in the work referred to. 
The two drawings (pl. i1., figs. 1 and 2) represent an adult female and 
male from the Granton quarry gathering; the only obvious external 
difference between them is in the structure of the fifth pair of feet, separate 
drawings of which are represented by figures 3and 4. A full description 
of the species, with drawings, is given by Prof. Sars in the work already 
mentioned. 
Genus Parastephos, G. O. Sars (1902). 
Parastephos pallidus, G. O. Sars. Pl. ii., figs. 5-10. 
1892. Parastephos pallidus, G. O. Sars, Crustacea of Norway, 
vol. iv., p. 65, pl. xliv. 
The genus Parastephos was recently instituted by Prof. G. O. Sars for 
a single male specimen of a copepod found many years before at Sjerjehavn, 
west coast of Norway, in about 100 fathoms, where the bottom was soft 
and muddy. 
During the past summer, while examining a bottom tow-net gathering 
collected near the head of Loch Fyne in November, 1901, I observed 
several specimens, both males and females, of this interesting species ; but 
though most of the male specimens were adult, the females, with the 
exception of one, were more or less immature. The drawings of the male 
prepared by Prof. G. O. Sars are perfectly characteristic, but the figures 
given here may be useful to those who have not seen the drawings of the 
learned author referred to. 
The species is a moderately large one, the adult male (fig. 6) is very 
nearly two millimetres in length, while the adult female (fig. 5) is some- 
what larger, being 2°19 mm. (about ;4, of an inch). The description of 
the fifth feet of the male may be best given in Prof. G. O. Sars’ own 
words :—“ Last pair of legs in the male largely developed and very 
asymmetrical, right leg slender and terminating in a strong denticulated 
claw, left leg much coarser, with the antepenultimate joint the largest’ 
(fig. 10). The distal portion of the right leg can apparently be folded 
completely back upon the proximal portion as shown in the figure. 
The female antennules resemble those of the male; they are equally 
elongated and composed of twenty-four joints, the second and eighth joints 
are each nearly as long as the combined lengths of the two joints wh!ch 
immediately follow them. The antennules are only sparingly setiferous, 
and are furnished with several small sensory filaments (fig. 7). The fifth 
pair in the female appear also to be asymmetrical; in the only adult 
specimen obtained the left leg of the fifth pair is considerably longer than 
the right one, but this appears to be the only difference (fig. 9). 
In the female, each of the first three abdominal segments expands 
posteriorly into a ridge which is fringed with fine hairs, as shown in 
fig, 2. | 
In the adult male represented by the drawing, the second. pair of 
thoracic feet (fig. 8) are alike on both sides, the outer branches being both 
three-jointed and the inner two-jointed. Prof. G. O. Sars, in his descrip- 
tion of the only male specimen he had, states that the outer branch of the 
right foot of the second pair was only two-jointed ; but such a difference 
is rather unusual among the Calanoida, and probably his specimen may 
