. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 96 DISCOVERY REPORTS endopod. The setae are broken in all the male specimens at my disposal, but the remnants do not appear to be modified (Fig. 16 F). Uropods short and compact with the endopod extending only slightly beyond the distal end of the apical spines of the telson; exopod truncate distally and only slightly longer than the endopod (Fig. 16G). Telson in the shape of a trapezium, which is symmetrical about its long axis; twice as broad at the base as at the apex; lateral margins convex
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 96 DISCOVERY REPORTS endopod. The setae are broken in all the male specimens at my disposal, but the remnants do not appear to be modified (Fig. 16 F). Uropods short and compact with the endopod extending only slightly beyond the distal end of the apical spines of the telson; exopod truncate distally and only slightly longer than the endopod (Fig. 16G). Telson in the shape of a trapezium, which is symmetrical about its long axis; twice as broad at the base as at the apex; lateral margins convex at the base, but somewhat concave along the distal two-thirds of their length; armed with 5-6 small spines on each side; penultimate lateral spine larger than the more proximal ones, the most distal one twice as long as the penultimate and half as long as the outermost apical spine on each side. These two spines are. Fig. 16. Pseudomma calmani A, anterior end of adult male in dorsal view; B, left antenna; C, eyeplate; D, eighth thoracic appendage of male; E, distal end of endopod of eighth thoracic appendage (enlarged); F, fourth pleopod of male; G, telson and uropods of adult male in dorsal view. All x 26. borne close to the apex and form, with the graduated apical spines, a regularly graduated series. Apex armed with three pairs of long spines, which increase in length towards the middle line; median pair of spines about one-fifth of the length of the telson; pair of median setae present (Fig. 16G). Length. Adult breeding females from station 219 measured 5-5 mm. from the anterior margin of the eyeplate to the apex of the telson and two adult females from station 229 measured just over 7 mm. The largest specimens were two males which measured 8-5 mm., from station 801. Remarks. This species has been taken with P. sarsi, but may be readily distinguished from it by its smaller size, by its comparatively shorter and thicker antennules and antennae, by the longer apex of th
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