. Bulletin - United States National Museum. Science. Figs. 281-282.—Acuakia axtiuris. 281, Male tail, a, Cross section ; b, ventral view. After Schneider, 1SGG. 282, «., Male tail X about 50 ; b, female tail end. After Linstow, 1873 Life history.—Unknown; Linstow (1895) found an encapsulated larva in Gam-marus pulex which he regarded as possibly this species. Distribution.—Europe. It has unfortunately, but quite naturally, happened that many of the older genera have poorly described and little known species as types. This is the case with Acuaria, type A. anthuris, and this is one reason for t
. Bulletin - United States National Museum. Science. Figs. 281-282.—Acuakia axtiuris. 281, Male tail, a, Cross section ; b, ventral view. After Schneider, 1SGG. 282, «., Male tail X about 50 ; b, female tail end. After Linstow, 1873 Life history.—Unknown; Linstow (1895) found an encapsulated larva in Gam-marus pulex which he regarded as possibly this species. Distribution.—Europe. It has unfortunately, but quite naturally, happened that many of the older genera have poorly described and little known species as types. This is the case with Acuaria, type A. anthuris, and this is one reason for the complicated relationships of Acuaria, Spiroptera, Anthuris, and Dispkaragus; a well described and commonly known type species aids in the definition of a genus and in the efforts to. Fig. 283.—Accaria ANTHURIS. Ovejector. After Seurat, 1915 promptly assign the species to a valid genus and retain it there. Even yet, A. ant hurts is not well described in any work available to the writer, and there are certain discrepancies that need clearing up in the available descriptions. In a discussion of the genus Acuaria sensu stricto (p. 217) the writer has briefly summarized the somewhat complicated status of the genus Acuaria as related to Spiroptera, Anthuris, and Disphara- gus. A detail of that case, not discussed there, is the fact that Ru- dolphi's Spiroptera anthuris was a composite species and as such S. anthuris is in part a synonym of several other recognized 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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