. Bulletin - United States National Museum. Science. MARINE GAMMARIDEAN AMPHIPODA 475 Genera of Thaumatelsonidae Prothaumatelson Schellenberg Prothaumatelson Schellenberg, 1931.—Gurjanova, 1938. Type-species: Thaumatelson nasutum Chevreux, 1912a; 1912b (monotypy). Species: 2, bipolar, littoral. Pseudothaumatelson Schellenberg Pseudothaumatelson Schellenberg, 1931.—Gurjanova, 1938. Parathaumatelson Gurjanova, 1938. Type-species: P. patagonicum Schellenberg, 1931 (present selec- tion) . Species: 3, subantarctic, Figure 171.—Thaumatelsonidae: Mouthparts, Thaumatelson herdmani Walker (1
. Bulletin - United States National Museum. Science. MARINE GAMMARIDEAN AMPHIPODA 475 Genera of Thaumatelsonidae Prothaumatelson Schellenberg Prothaumatelson Schellenberg, 1931.—Gurjanova, 1938. Type-species: Thaumatelson nasutum Chevreux, 1912a; 1912b (monotypy). Species: 2, bipolar, littoral. Pseudothaumatelson Schellenberg Pseudothaumatelson Schellenberg, 1931.—Gurjanova, 1938. Parathaumatelson Gurjanova, 1938. Type-species: P. patagonicum Schellenberg, 1931 (present selec- tion) . Species: 3, subantarctic, Figure 171.—Thaumatelsonidae: Mouthparts, Thaumatelson herdmani Walker (1907): a, mandible; b,c, maxillae 1, 2; d, maxilliped. Prothaumatelson nasutum (Chevreux, 1912b): e, maxilHped. Gnathopod 1:/, Thaumatelson walkeri Chilton (1912b); g, Pro- thaumatelson carinatum Shoemaker (1955). Gnathopod 2: h, Thaumatelson herdmani; i, Thaumatelson walkeri; j, Prothaumatelson carinatum. Uropod 3: k, Prothaumatelson nasutum. Urosome and pleonite 3, urosomites coalesced, bearing 3 uropods and large telson: /, Thaumatelson walkeri. 285-135 O - 69 - 31. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.
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