. Bulletin - United States National Museum. Science. GAMMARIDEAN AMPHIPODA 145. Figure 31.—Eurystheus spinosus Shoemaker, male, mm., station 38-A-2: a, pereopod 1; b, pereopod 3, minus coxa; c, right gnathopod 2, medial view; d, left gnathopod 2, lateral view; e, ventrodistal end of outer ramus of uropod 1;/, g, h, uropods 1, 2, 3; i, head and epistome-upper lip complex; j, enlarged view of posterior edge of pleonal epimeron 3. and sharpness. The gnathopods of some young individuals of M. martesia are like those of E. spinosus and some of the former specimens may have been misidentified be
. Bulletin - United States National Museum. Science. GAMMARIDEAN AMPHIPODA 145. Figure 31.—Eurystheus spinosus Shoemaker, male, mm., station 38-A-2: a, pereopod 1; b, pereopod 3, minus coxa; c, right gnathopod 2, medial view; d, left gnathopod 2, lateral view; e, ventrodistal end of outer ramus of uropod 1;/, g, h, uropods 1, 2, 3; i, head and epistome-upper lip complex; j, enlarged view of posterior edge of pleonal epimeron 3. and sharpness. The gnathopods of some young individuals of M. martesia are like those of E. spinosus and some of the former specimens may have been misidentified because of this similarity. The third uropods of M. martesia appear to have longer, more slender rami than those of E. spinosus, but without dissecting and mounting the uropods in precisely replicated planes this characteristic is not useful for identification. Because the writer is not satisfied with the identifica- tions of all specimens in both species he has not removed the uropods in anticipation that further study of large suites of adults of the two species will reveal other, more reliable characters. There is no evidence that M. martesia is the terminal adult of E. spinosus. Transformation of male gnathopod 2 from one condition to the other would be of extraordinary degree but this situation must. 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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