. / V Fig. 16. S. ciassiis. Elaphocaris 2, ventral. A, frontal sensor)' papilla; B, ocular papilla; C, maxillule; D, maxilla; E, maxillipede i; F, maxillipede 3. Fig. 17. S. crassus. Acanthosoma i; a, antenna; b, telson. Acanthosoma i (Fig. 17 a, b). Length 2-55 mm. Rostrum 0-85 mm. Rostrum very spiny, with large basal spine. Supraorbital spines very small. One pair of small lateral spines. Margin of carapace with a row of spinules continuous with the spinules of the lateral spine. Dorsal organ very small. No posterior dorsal spine. Abdominal somites with dorsal spines i and 2 smaller than 3-6
. / V Fig. 16. S. ciassiis. Elaphocaris 2, ventral. A, frontal sensor)' papilla; B, ocular papilla; C, maxillule; D, maxilla; E, maxillipede i; F, maxillipede 3. Fig. 17. S. crassus. Acanthosoma i; a, antenna; b, telson. Acanthosoma i (Fig. 17 a, b). Length 2-55 mm. Rostrum 0-85 mm. Rostrum very spiny, with large basal spine. Supraorbital spines very small. One pair of small lateral spines. Margin of carapace with a row of spinules continuous with the spinules of the lateral spine. Dorsal organ very small. No posterior dorsal spine. Abdominal somites with dorsal spines i and 2 smaller than 3-6, which are subequal. No ventral spines. Lateral spines short and prickly, decreasing backwards; that of somite 5 very small. Telson short, nearly as wide as long, but posterior fork with very long slender arms. These arms nearly parallel and reaching beyond the uropods, bearing two inner and two outer spines. The lateral spine of the telson is inserted just beyond the fork, on the arm itself. Eye one-fifth length of body, the length not quite i^ times width of eyeball, which is slightly asymmetrical. No papilla seen on eyestalk. Antennal scale very broad near end, and of characteristic shape (Fig. 17 a)\ flagellum short, not much longer than scale,
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
