246 
twenty- Four jouded, the proportional length of the joints a as int 
tule 
18°20°6°6°5'5°B°7°4: 4° 4° 7+ 6 7° 6: 6:5: 5° 6: 6°7: 910° 8 
218 3475 ° 6-7 8" 9 10 Le 13 146 15 16 “17°18 19 “20 aa 23° "24 
Sparingly setiferous ; there appears to be a depressed lobe-like process upon 
the distal end of the first or proximal end of the second joint (fig. 2), 
Antenne the same in both sexes ; posterior antenneze nearly as in Calanus 
jinmarchicus, but the primary branch i is somewhat shorter proportionally me 
mouth organs also as in that species. First four pairs of swimming feet as — 
in Pseudocalanus elong gatus, 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 somewhat those of Candace pectinata. Fifth pair of feet in the 
male long and forming a powerful grasping organ; both feet are one- — 
branched and four-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 sete, and a few small hairs. ae 
 Habitat.—Off St Monans, Firth of Forth. Several a were ob- 3 
tained. | 
This comes very near Pseudocalanus, and but for the presence ofa ftth 
pair of feet in the female, and the powerfully developed fitth feet of the 
male, would have become a member of that genus ; as it is, the affinities of 
Stephos minor seem to be with Pseudocalanus on the one hand, and es 
Candace or Acar ta on the other. 
Family Micoruninas, Brady (1878). 
_ Pseudocyclopia, nov. gen. (provisional name). 
nya 
ee pein es 
Body robust, and resembling Psendocyclops in general appearance. Head 7 
anchylosed with thorax. Basal joint of the anterior antenne very large 
and nearly half the entire length of the antenna. The primary branch of oo. ; 
the posterior antenne threejointed, the middle joint long; secondary 
branch large but scarcely so long as the primary branch, fivejointed, 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 i in the male, elongate, one- or two- 
branched, unequal on the two sides, and forming powerful or asa wee ay 
Apiowen | in the female four-, in the male five-jointed, __ ie 7 
Pseudocyelopia erassicornis, n. sp. fpreyeronal name). (PL. VI, 
15-29). 
Length, exclusive of caudal sete, -66 mm. ie (ali thorax <cbae 
: jomted the first segment more than twice the combined length 
other three. Abdomen small, fivejointed in the male, four-jointed n th 
female ; rostrum short, directed coyne nee as antenna ; 
