. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 34° DISCOVERY REPORTS 28. Serolis nototropis, (Figs, id, 16, 17). Occurrence. St. WS 796: 47° 49' 37" S, 63° 42' 30" W, 106 m.; 3 ?? (b.). St. WS 797: 47° 45' i8" S, 64° 10' 30" W, 117 m.; I 9 (b.). St. WS813: 51° 35' I5"S, 67° 16' 15" W, 106 m.; i ? (b.), 2 immature (J^. St. WS815: 51° 51'45" S, 65° 44'W, 132-162 m.; I (J. St. WS 816: 52° 09' 45" S, 64° 56' W, 150 m.: I ?. St. WS837: 52° 49' i5"S, 66°28'W, 98 m.; 13. Description. The body (Fig.
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 34° DISCOVERY REPORTS 28. Serolis nototropis, (Figs, id, 16, 17). Occurrence. St. WS 796: 47° 49' 37" S, 63° 42' 30" W, 106 m.; 3 ?? (b.). St. WS 797: 47° 45' i8" S, 64° 10' 30" W, 117 m.; I 9 (b.). St. WS813: 51° 35' I5"S, 67° 16' 15" W, 106 m.; i ? (b.), 2 immature (J^. St. WS815: 51° 51'45" S, 65° 44'W, 132-162 m.; I (J. St. WS 816: 52° 09' 45" S, 64° 56' W, 150 m.: I ?. St. WS837: 52° 49' i5"S, 66°28'W, 98 m.; 13. Description. The body (Fig. 16) is longer than broad, almost oval in shape, but narrowing posteriorly; the dorsal surface is arched, with a pronounced median keel which is better developed in the male than the female. The surface of the body is slightly pitted and covered with rows of conical papillar projections (Fig. ly a). The only adult male measures 11 mm. in length and 8 mm. in greatest breadth, the largest female 12 mm. in length and 9 mm. in greatest breadth, so that in this species the ratio of length to breadth is approximately the same for the two sexes. The head is broader than long, shield- shaped, with the greatest width anteriorly. A short rostrum is present, on either side of which the anterior margin is excavated for the reception of the antennules, and immediately behind this margin a trans- verse ridge extends across the width of the head. The eyes, which are situated on raised areas, are placed rather close together near the posterior border of the head; the area of the latter between the eyes and the anterior transverse ridge is raised. The eyes are small, oval in shape, and contain black pigment. As in all the Serolidae the second thoracic somite is fused with the head; the lateral portion is smooth, but in the middle line, behind the head, the surface is raised into a small dorsal spiniform process. The third and fourth thoracic somites are sub-equal, the fifth and six
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