. Fig. I. S. atlanticus. a, Elaphocaris i; b, Elaphocaris 2; c, dorsal spine from side. Description. Elaphocaris i (Fig. i a). Length o-8 mm. Anterior process dividing into three equal denticulate spines. Lateral process curved backwards, denticulate, and without spines. Posterior process about two-thirds length of abdomen, denticulate, without spines. Telson branches long and narrow, the long spines subequal. Elaphocaris 2 (Fig. i b, c). Length 1-3 mm. Rostrum 0-94 mm. Rostrum as long as carapace, with seven spines, rather irregularly arranged. Lateral process with five anterior and four post

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. Fig. I. S. atlanticus. a, Elaphocaris i; b, Elaphocaris 2; c, dorsal spine from side. Description. Elaphocaris i (Fig. i a). Length o-8 mm. Anterior process dividing into three equal denticulate spines. Lateral process curved backwards, denticulate, and without spines. Posterior process about two-thirds length of abdomen, denticulate, without spines. Telson branches long and narrow, the long spines subequal. Elaphocaris 2 (Fig. i b, c). Length 1-3 mm. Rostrum 0-94 mm. Rostrum as long as carapace, with seven spines, rather irregularly arranged. Lateral process with five anterior and four posterior spines. Posterior process swollen at base, 1 We have in all cases omitted references which have already been given by Hansen. 2 The colour is indicated by black or stippling in the figures.

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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti