. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. i56 DISCOVERY REPORTS Remarks. Although the character of the telson is unknown, the form for which this genus is proposed seems satisfactorily placed in the family Calliopiidae The mouth- parts, side-plates and subsimilar peraeopods fit in well with most of the other genera. There is, however, a certain resemblance to the Pleustids (cf. Parapleustes latipes, Sars, 1895, pi. cxxvii) and the long 4th pleon segment recalls Lafystius. The name is from the locality, Clarence Island. Clarencia chelata
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. i56 DISCOVERY REPORTS Remarks. Although the character of the telson is unknown, the form for which this genus is proposed seems satisfactorily placed in the family Calliopiidae The mouth- parts, side-plates and subsimilar peraeopods fit in well with most of the other genera. There is, however, a certain resemblance to the Pleustids (cf. Parapleustes latipes, Sars, 1895, pi. cxxvii) and the long 4th pleon segment recalls Lafystius. The name is from the locality, Clarence Island. Clarencia chelata, Brnrd. (Fig. 91). Barnard, 1931, p. 428. Occurrence: St. 170. South Shetlands. 1 immat. about 13 mm. Description. Integument not strongly indurated, smooth. No rostrum. No trace of eyes or ocular pigment. Antero-lateral angle of head rounded. Peraeon segments. Fig. 91. Clarencia chelata, Brnrd. a. General view. b. 3rd peduncular joint and portion of flagellum of antenna 1. c. Lower lip. d. Mandible, e. Maxilla 1. /. Maxilla 2. g. Maxilliped. /;. Gnathopod 1. slightly raised on posterior margins, becoming increasingly imbricate posteriorly, seg- ments 6 and 7 ending in a blunt medio-dorsal projection. Side-plates 1-4 moderately deep, 1 subquadrate, slightly produced forwards, 2 and 3 rounded below, 4 with lower angle narrowly rounded, and the oblique posterior margin nearly straight, 5 and 6 with posterior lobes deeper than the anterior lobes. Pleon segments 1-3 carinate, the carina on each segment ending in a sharp tooth; postero-inferior angles of segments 2 and 3 rounded-quadrate; segment 4 long, with dorsal depression between a slight basal hump and a posterior blunt dorsal ridge. Segments 5 and 6 and telson Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Institute of Oceanographic Sciences (Grea
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