. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 230 DISCOVERY REPORTS Antenna i, 3rd joint longer than 1st, flagellum 10-11-jointed, accessory flagellum 4-jointed. Antenna 2, flagellum 10-11 -jointed. Epistomial spine strong. Gnathopod 1, 6th joint shorter than 5th, oval, longer than broad, palm oblique, not defined from hind margin, 5th and 6th joints both setose. Gnathopod 2 long, carried transversely across the body, 2nd joint linear, 6th shorter than 5th, ovate, palm very oblique, defined by a small tooth from the short hind margin, with
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 230 DISCOVERY REPORTS Antenna i, 3rd joint longer than 1st, flagellum 10-11-jointed, accessory flagellum 4-jointed. Antenna 2, flagellum 10-11 -jointed. Epistomial spine strong. Gnathopod 1, 6th joint shorter than 5th, oval, longer than broad, palm oblique, not defined from hind margin, 5th and 6th joints both setose. Gnathopod 2 long, carried transversely across the body, 2nd joint linear, 6th shorter than 5th, ovate, palm very oblique, defined by a small tooth from the short hind margin, with three small rounded denticles, finger shorter than palm, 5th and 6th joints setose. Peraeopods 1 and 2 slender, feebly setose, dactyl half length of 6th joint. Peraeopod 3, 2nd joint large, oblong, expanded behind, hind margin very slightly concave, serrulate, lower hind angle rounded, 4th strongly ex- panded, almost circular, 5th and 6th slender. Peraeopod 4 resembling peraeopod 3, but hind margin of 2nd joint gently convex and 4th joint oval, not quite so strongly expanded. Peraeo- pod 5, 2nd joints slender, widest proximally, tapering distally, hind margin undulate, entire, with only a few setules, 4th linear. Uropod 3 slender, peduncle with two stout spines on distal margin. Remarks. Chilton (1912) has described and figured a 3 and a $ from Gough Island which resemble the present specimen very closely. The 2nd gnathopod in the two 3S is similar, and both specimens have the expanded 4th joint in the posterior peraeopods; but whereas in Chilton's specimen the expansion occurred on peraeopods 3 and 5, here it occurs on 3 and 4. In 1920 Chilton came to the conclusion that the Gough Island specimens were more properly identified as dentatus, Chevr., than as afer, Stebb. He states that specimens from New Zealand are the same as those from Gough Island and that the 1st side-plate and the pleon segments in the New Zealand specimens are dentate as in dentatus; but the gnathopods are
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
