. 54 DISCOVERY REPORTS Genus Tryphosites, Sars. Stebbing, 1906, p. 77; 1914, p. 355. Sexton, 1911 (Ann. Mag. Nat. Hist., ser. 8, vol. vn), p. 510. The genus is characterized by the prominent spiniform process of the epistome. It includes the northern longipes (Bate and Westw.) with a strong upturned point on the postero-inferior angle of pleon segment 3, and alleni, Sext., with two points, stebbingi (Wlkr.) from Cape Adare and Coats Land,1 with a short point, and chevreuxi Stebb. with the lower hind margin strongly serrate. Tryphosites chevreuxi, Stebb. (Fig. 19). Stebbing, 1914, p. 355, pi. i
. 54 DISCOVERY REPORTS Genus Tryphosites, Sars. Stebbing, 1906, p. 77; 1914, p. 355. Sexton, 1911 (Ann. Mag. Nat. Hist., ser. 8, vol. vn), p. 510. The genus is characterized by the prominent spiniform process of the epistome. It includes the northern longipes (Bate and Westw.) with a strong upturned point on the postero-inferior angle of pleon segment 3, and alleni, Sext., with two points, stebbingi (Wlkr.) from Cape Adare and Coats Land,1 with a short point, and chevreuxi Stebb. with the lower hind margin strongly serrate. Tryphosites chevreuxi, Stebb. (Fig. 19). Stebbing, 1914, p. 355, pi. iii. Occurrence: 1. St. 51. Falkland Islands. 1 <J 7-5 mm., 2 $? 8-9 mm., 1 juv. 6 mm., from kelp root. 2. St. 222. Cape Horn. 1 juv. 7 mm. 3. St. WS 71. Falkland Islands. 3 $$ (1 ovig.) 12-13 mm- 4. St. WS 92. Between Falkland Islands and South America. 1 $ 8 mm., 2 immat. 7 mm. Remarks. Antenna 1 in ?, flagellum 14- jointed, accessory flagellum 5-jointed. Antenna g N C. 2, flagellum 14-jointed. Side-plate I slightly Fig. 19. Tryphosites chevreuxi, Stebb. a. An- narrowed, or at least not widened, below. Telson terior margin of head with epistome and upper more tapering than in Stebbing's figure, with UP' *• Variation of epistome. r. Pleon segments , • , 1 l • 1 3 and 4. narrower subacute apices, each lobe with two apical and two lateral spines. The epistomal process is more upturned and falciform than in longipes. A single accessory branchia on both segments 5 and 6. Distribution. Falkland Islands, 8 fathoms. Genus Tmetonyx, Stebb. Stebbing, 1906, pp. 73, 720. Schellenberg, 1926, p. 278; 1931, p. 40. T. stebbingi (Wlkr.) must be transferred to the genus Tryphosites as Chilton (1912) has shown, owing to its having the epistome produced in a long acute process. The only other austral representatives are miersi from Australia, the Kerguelen species cicadoides Stebb., and the Antarctic ('Gauss' winter station) species cicodopsis Schell. The following species is very closel
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