. Bulletin - United States National Museum. Science. 124 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM 3. Endopod of both second legs invaginated at its base inside, as in female; large, 3 mm. or more in length robusta (p. 126) Endopod of right leg only invaginated, left second endopod like other legs; small, 2 mm. or less in length gracilis (p. 127) PLEUROMAMMA XIPHIAS (Giesbrecht) Figure 82 Fleurotuma xipliias Giesbrecht, Fauna und Flora des Golfes von Neapel, vol. 19, p. 347, pis. 32, 33, 1892. Pleuromamma Giesbrecht and Schmeil, Das Tierreich, Lief. 6, Cope- poda, p. 110, 1898. Occm
. Bulletin - United States National Museum. Science. 124 BULLETIN 15 8, UNITED STATES NATIONAL MUSEUM 3. Endopod of both second legs invaginated at its base inside, as in female; large, 3 mm. or more in length robusta (p. 126) Endopod of right leg only invaginated, left second endopod like other legs; small, 2 mm. or less in length gracilis (p. 127) PLEUROMAMMA XIPHIAS (Giesbrecht) Figure 82 Fleurotuma xipliias Giesbrecht, Fauna und Flora des Golfes von Neapel, vol. 19, p. 347, pis. 32, 33, 1892. Pleuromamma Giesbrecht and Schmeil, Das Tierreich, Lief. 6, Cope- poda, p. 110, 1898. Occm^rence.âOne female from the trawl wings, Station 951, Fish Hawk^ south of Marthas Vineyard; three females, trawl wings. Sta- tions 2195, 2224, Albatross, south of Nantucket; two females, vertical haul, Station 20044, Grampus, south of Georges Bank. Distribution.âTropical Pacific (Giesbrecht) ; South African coast (Cleve, Stebbing); California coast (Esterly) ; Gibraltar (Thompson and Scott) ; Abrolhos Islands, Indian Ocean (Giesbrecht) ; Malay Archipelago (A. Scott); Gulf of Maine (Bigelow). Color.âBody banded, translucent or nearly opaque bluish alternating with still more trans- lucent or nearly transparent bands. Caudal seg- ments, antennae, and all the appendages as clear and transparent as water. An elongate blotch of bright crimson extends lengthwise along the center of the ventral surface between and around the bases of the mouth parts and up into the head. The eye is small and a lighter red. (Rathbun.) Female.âBody long and narrow; forehead just Figure 82.âpieuro- above the rostrum prolonged into a pointed proc- mamma anpMas: o, ess; head fused with the first segment; urosome h. head, lateral l^ss than half the length of the metasome; genital â ^iew segment one-half longer than the two abdominal segments combined, protruding ventrally; luminous organ large, nearly always on the right side; fifth legs 4-segmented, the two distal segments fringed with long hairs on
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