Archive image from page 136 of Discovery reports (1932) Discovery reports discoveryreports05inst Year: 1932 ACANTHONOTOZOMATIDAE 127 Pariphimedia integricauda, Chevr. (Fig. 70). Chevreux, 1906, p. 39, figs. 21-23. Chilton, 1912, p. 487. Occurrence: St. 179. Palmer Archipelago. 111-5 mm., 2 $$ 15 mm., 1 juv. 6-5 mm. Remarks. The lower margin of the rostrum is continued as a low median keel on to the base of the epistome, rising at its upper end into a triangular pointed tooth. The dorsal tooth on the 3rd pleon segment rises from a low keel. Side-plate 4 fits into a groove near the lower margi
Archive image from page 136 of Discovery reports (1932) Discovery reports discoveryreports05inst Year: 1932 ACANTHONOTOZOMATIDAE 127 Pariphimedia integricauda, Chevr. (Fig. 70). Chevreux, 1906, p. 39, figs. 21-23. Chilton, 1912, p. 487. Occurrence: St. 179. Palmer Archipelago. 111-5 mm., 2 $$ 15 mm., 1 juv. 6-5 mm. Remarks. The lower margin of the rostrum is continued as a low median keel on to the base of the epistome, rising at its upper end into a triangular pointed tooth. The dorsal tooth on the 3rd pleon segment rises from a low keel. Side-plate 4 fits into a groove near the lower margin of side-plate 5, its acute postero-inferior angle projects somewhat laterally; side-plate 6 is also grooved near the lower margin for the reception of the base of the 4th peraeopod when this limb is pushed backwards. The telson is apically notched. Mandibles without a trace of a secondary cutting-plate. Palp of Fig. 70. Pariphimedia integricauda, Chevr. a. General view. b. 2nd, 3rd and rudimentary 4th joints of palp of maxilliped. c. Telson. maxilliped with a minute unguiform rudiment of a 4th joint, not extending to the apex of the 3rd joint, and bearing a single long seta. The colour as preserved is brownish-orange. Distribution. Palmer Archipelago, littoral; South Orkneys, littoral to 4 fathoms. Pariphimedia normani (Cunn.) (Fig. 71). Cunningham, 1871, p. 498, pi. lix, fig. 7. Stebbing, 1906, p. 217; 1914, p. 359, pis. iv, v. Schellenberg, 1931, p. 119. Occurrence: St. 53. Falklands. 2 $? 9-10 mm. from kelp root. Remarks. Easily distinguished from the previous species by the absence of the paired processes on pleon segment 2 and the toothed keel on segment 3. The median keel from the base of the rostrum to Fig. ?I. panphimedia normani (Cunn.). the epistome is the same as in integricauda. Side- Side-plates 4-6.
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