of the Fishery Board for Scotland. 225 
Several specimens of what appears to be this species were obtained in 
Loch Morar. 
Cyclops fimbriatus, Fischer. 
£1785. Cyclops crassicornis, Miiller, Bntataostnaed pi hh ey PL 
XVIILL. figs. 15-17. 
1853, Cyclops fimbriatus, Fischer, Bull. Soc. Imp. Moscow, p. 94, 
PI. IIL. figs. 19-28, 30. 
1891. Cyclops fimbriatus, Brady, op. cit., p. 25, Pl. IX. fig. 1. 
This pretty Cyclops was moderately frequent in the bottom material 
collected at the head of the loch. 
Family Harpacticipz. 
Genus Aitheyella, Brady. (See note at p. 235.) 
Attheyella spinosa, Brady. (Pl. VI. figs. 11-20.) 
1880. Attheyella spinosa, Brady, Mon. Brit. Copep., vol. 11. p. 58, 
Pl. XLII. figs. 15-18; Pl. XLVI figs. 13-18. 
Female as described by Dr Brady (op. cit.). 
Male.—The third joint of anterior antenne dilated exteriorly so as to 
form a large lobe-like process (fig. 23). Mouth organs and first and 
second pairs of swimming feet as in the female. Both branches of third 
pair of swimming feet three-jointed ; the first two joints of the outer 
branches are broad and of about equal length, the second joint is armed 
on the outer half of the distal end with a strong conical spine slightly 
curved outward at the extremity, third joint narrow and as long as the 
other two together; the first two joints of the inner branch are very 
short, the second being armed with a moderately long spiniform process, 
the two edges of which instead of being straight are curved in a some- 
what irregular zigzag manner; the last joint, which is nearly twice as 
long as the first two together, is furnished with a long plain terminal 
seta, besides a short and plumose subterminal one. Fourth pair as in the 
female. Fifth pair small; basal joint moderately broad, somewhat 
rounded, but not much produced posteriorly, and provided with two stout 
plumose sete; secondary joint elongate-ovate, furnished with several 
setz, as shown in the figure (fig. 18). Caudal stylets rather longer than, 
and not so much dilated as those of the female. 
Attheyella spinosa was frequent in the bottom material from the head 
of the loch, and also in that from Brinacory. ‘The large spines on the 
outer branches of the third swimming feet of the male form a striking 
character. 
Aitheyella cryptorum, Brady. (Pl. VI. figs. 21-31). 
1868. Canthocamptus cryptorum, Brady, Jour. of Micros. Sci., 
vol. ix., Pl. VI. figs. 1-10. 
1880. Attheyella cryptorum, Brady, Mon. Brit. Copep., vol. ii. 
p. 60, Pl. LII. figs. 1-18. 
Length, exclusive of caudal sete, 66 mm. (34th of an inch). The 
general form is something like that of Canthocamptus. Anterior antenne, 
of the female, short, moderately stout, eight-jointed. A sensory filament 
springs from the upper distal angle of the fourth joint. The proportional 
length of the joints are as follows :— 
Pe Bee ie Ole OF ce. RUE 
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