Discovery reports (1941) Discovery reports discoveryreports20inst Year: 1941 24 DISCOVERY REPORTS The specimen of 6-5 mm. differs in having small dorsal spines on somites 4-6, the arms of the telson more slender, and the antennal flagellum shorter and without curved setae. In this specimen pleopods 2-5 each have endopods without setae. Colour. Red patches as shown in Fig. 14 b. Sergestes crassus Hansen Hansen, 1922, p. 102, Mastigopus. Gurney, 1924, p. 87, fig. 25, Elaphocaris 2; p. 94, fig. 32, Acanthosoma 2. Material. This species is common at Bermuda. The first Elaphocaris was not identif
Discovery reports (1941) Discovery reports discoveryreports20inst Year: 1941 24 DISCOVERY REPORTS The specimen of 6-5 mm. differs in having small dorsal spines on somites 4-6, the arms of the telson more slender, and the antennal flagellum shorter and without curved setae. In this specimen pleopods 2-5 each have endopods without setae. Colour. Red patches as shown in Fig. 14 b. Sergestes crassus Hansen Hansen, 1922, p. 102, Mastigopus. Gurney, 1924, p. 87, fig. 25, Elaphocaris 2; p. 94, fig. 32, Acanthosoma 2. Material. This species is common at Bermuda. The first Elaphocaris was not identified, but the Acanthosoma was obtained twice by moulting from Elaphocaris 3, Fig. 15. S. crassus. a, Elaphocaris 2; b, Elaphocaris 3. and Acanthosoma i moulted to Acanthosoma 2. The connexion of Acanthosoma with Mastigopus was not proved by moult, but the resemblance in form and colour is so close that we have no doubt of their identity. Description. Elaphocaris 2 (Figs. 15 a, 16). Length 1-2 mm. Rostrum 0-91 mm. Carapace as wide as long, with rather short, stout lateral processes and long posterior spine, reaching to end of body. Telson arms divergent, very slender, more than six times as long as wide; the spines comparatively short; spine 5 shorter than spine 4. Eye rather pear-shaped, length a little more than half length of carapace. There is a minute ventral papilla on the eyestalk, and, in the specimen drawn, there was a pair of very small frontal organs. Labral spine very large.
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