. Fig. 41. S. pcctiiiatus. a, Mastigopus, 6 mm.; b, setae on flagellum. Sergestes sargassi Ortm. Hansen Hansen, 1922, p. 154, Mastigopus. Illig, 1927, p. 330, S. nudus, Mastigopus (?), fig. 103. Cecchini, 1928Z), p. 38, Mastigopus (?). Ortmann (1893, p. 69) mentions an Acanthosoma which he thought was that of S. sargassi, but without figure or adequate description. Material. We have no larvae which can with certainty be referred to this species, and the Mastigopus is rare at Bermuda. The Acanthosoma described below, of which one specimen was taken in 1935 and one in 1938 at Bermuda, cannot be
. Fig. 41. S. pcctiiiatus. a, Mastigopus, 6 mm.; b, setae on flagellum. Sergestes sargassi Ortm. Hansen Hansen, 1922, p. 154, Mastigopus. Illig, 1927, p. 330, S. nudus, Mastigopus (?), fig. 103. Cecchini, 1928Z), p. 38, Mastigopus (?). Ortmann (1893, p. 69) mentions an Acanthosoma which he thought was that of S. sargassi, but without figure or adequate description. Material. We have no larvae which can with certainty be referred to this species, and the Mastigopus is rare at Bermuda. The Acanthosoma described below, of which one specimen was taken in 1935 and one in 1938 at Bermuda, cannot be proved to belong to S. sargassi, but there is no other species to which it can be attached. Its colour and general resemblance to S. pectinatiis support the identification. Description. Acanthosoma 2 (Figs. 42, 43). Length 3-0 mm. Rostrum 0-96 mm. Rostrum denticulate, longer than antennule, with long basal spine. Carapace as wide as long. Supraorbital spines denticulate, longer than eye; anterior lateral spines long and stout, with several long basal spinules; posterior lateral spines with long basal spinules. Hepatic spines long, slender, denticulate. Posterior dorsal spine very long, with spinules. Dorsal organ large.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
