. Bulletin - United States National Museum. Science. Figure 32,—Oaetanus kruppii: a. Female, lat- eral ; 6j male, fifth legs bristles chiefly on the posterior surface. Total length, mm. Male.—Spines at posterior corners of fifth segment much shorter than in the female; anal segment also much shortened; first antennae not reaching the caudal rami, their basal half with numerous short colored aesthetasks on the anterior margins; no bristles on the fourth basipods; fifth legs biramose, endopods 1-segmented, right exopod 2 or 3 segmented, left exopod 3-segmented. Total length, mm. Bc
. Bulletin - United States National Museum. Science. Figure 32,—Oaetanus kruppii: a. Female, lat- eral ; 6j male, fifth legs bristles chiefly on the posterior surface. Total length, mm. Male.—Spines at posterior corners of fifth segment much shorter than in the female; anal segment also much shortened; first antennae not reaching the caudal rami, their basal half with numerous short colored aesthetasks on the anterior margins; no bristles on the fourth basipods; fifth legs biramose, endopods 1-segmented, right exopod 2 or 3 segmented, left exopod 3-segmented. Total length, mm. BcTnarks.—This is a deep-water species and rather widely distrib- uted, but it has never before been reported from our American coasts. It may be distinguished from the preceding species by the fact that the frontal spine is turned ventrally at right angles to the body axis. Genus GAIDIUS Giesbrecht, 1895 Head fused with the first segment; fourth and fifth segments also fused, with spines at the posterior corners; urosorae 4-segmented in. 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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