246 Part III. — Tenth Annual Report 
twenty-four-join ted, the proportional length of the joints as in the for- 
mula 
18-20'6-6-5'5'5-7-4 - 4 ° 4 • 7 • 6' 7 ' 6 • 6' 5' 5' 6' 6 • 7 ' 9 • 10 • 8 
■ 1 • 2 • 3 • 4 • 5 ' 6 ' 7 • 8 ' 9 ' 10 ' 11 • 12 ' 13 • 14 • 15 * 16 • 17 ' 18 • 19 ' 20 '21 • 22 • 23 '24 
Sparingly setif erous ; there appears to be a depressed lobe4ike process upon 
the distal end of the first or proximal end of the second joint (fig. 2). 
Antennae the same in both sexes ; posterior antennae nearly as in Calanus 
finmarchicus, but the primary branch is somewhat shorter proportionally ; 
mouth organs also as in that species. First four pairs of swimming feet as 
in Pseudoealanus elongatus, fifth pair in the female simple, one-branched, 
two-jointed, small ; first joint about one and a half time longer than 
broad ; the second joint about twice as long as the first, diminishing in 
breadth from the base to the apex, and bearing two small marginal spines 
■ — one opposite the other — on the distal half. The female fifth feet re- 
'semble somewliat those of Candace pectinata. Fifth pair of feet in the 
male long and forming a powerful grasping organ ; both feet are one- 
branched andiour-jointed ; the two last joints of the right foot'are elongate 
and slender, the ultimate joint being strongly curved outward in its upper 
half and forming a long powerful claw. The left foot is rather shorter than 
the other, and terminates in two digitiform processes between which the 
claw-like terminal joint of the right foot interlocks. Abdomen short ; in 
the female four-, in the male five-jointed, the last segment shorter than 
either of the others. Caudal stylets short, length about equal to the 
breadth, and furnished with four long subequal setae, and a few small hairs. 
Habitat.— Off. St Monans, Firth of Forth. Several specimens were ob- 
tained. 
• This comes very near Pseudoealanus, and but for the presence of a fifth 
pair of feet in the female, and the powerfully developed fifth feet of the 
male, would have become a member of that genus ; as it is, the affinities of 
Stephos minor seem to be with Pseudoealanus on the one hand, and 
Candace or Acartia on the other, 
Family Misophriad^;, Brady (1878). 
Pseudocyclopia, nov. gen. (provisional name). 
Body robust, and resembling Pseudoeyclops in general appearance. Head 
anchylosed with thorax. Basal joint of the anterior antennae very large 
and nearly half the entire length of the antenna. The primary branch of 
the posterior antennae three-jointed, the middle joint long ; secondary 
branch large but scarcely so long as the primary branch, five-jointed, the 
third and fourth joints small. Mouth organs nearly as in Calanus. The 
outer branches of the first four pairs of swimming feet three-jointed, and 
longer than the inner branches ; the inner branch of the first pair one- 
jointed, of the second pair two-jointed, of the third and fourth pairs 
three-jointed; the first basal joint of the third pair bears a long stout 
spine on the inner distal angle, longer than the inner branch. The fifth 
pair of feet in the female are small^ one-branched, two-jointed, the first 
joint short, subrotund ; the fifth feet in the male, elongate, one- or two- 
•branched, unequal on the two sides, and forming powerful grasping organs. 
Abdomen in the female four-, in the male five-jointed. 
Pseudoeifclopia crassieornis, n, sp. (provisional name). (PI. VII. figs. 
15-29). 
Length, exclusive of caudal setae, *66 mm. Cephalo-thorax robust, four- 
join'ted, the first segment more than twice the combined length of the 
other three. Abdomen small, five-jointed in the male, four-jointed in the 
female ; rostrum short, directed downwards. Anterior antennae short, 
