. Die kanadische Feld - naturforscher. November 1920] Die kanadische Feld-naturalistischen ARGULIDAE VOM SHUBEN ACADIE RIVER. NOVA SCOTIA. 149 von Charles Zweig Wilson, Ph. D., State Normal School, Westfield, Massachusetts, USA eine Umfrage der Shubenacadie Fluss mündet in den Becken von Minas, Neuschottland, wurde vor kurzem von Herrn A. H. Leim in Verbindung mit der Kanadischen shad Fischerei. Während dieser sur-sehr viele Exemplare der beiden Jugendlichen und Erwachsenen argulids wurden an shubenacadie mit dem tcw-net in Gezeiten- Wasser, das schien frisch zu sein, anstatt zu segeln. Diese Exemplare wurden an die Prese gesendet

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. The Canadian field-naturalist. November, 1920] ThE CANADIAN FiELD-NaTURALIST ARGULIDAE FROM THE SHUBEN ACADIE RIVER. NOVA SCOTIA. 149 By Charles Branch Wilson, Ph. D., State Normal School, Westfield, Mass., U.S.A. A survey of the Shubenacadie river, which empties into the Basin of Minas, Nova Scotia, was recently made by Mr. A. H. Leim in connection with the Canadian shad fisheries. During this sur- vey many specimens of both young and adult argulids were obtained at Shubenacadie with the tcw-net in tidal water which seemed to be fresh rather than sail. These specimens were sent to the present author for identification, and they proved to contain an abundance of both sexes of two species of Argulus, cne of which had previously been found in many localities on the Atlantic coast farther south, while the other was new to science. The following record of these two species is herewith submitted. Argulus alosae Gould. Argulus alosae Gould, Invertebrata of Massa- chusetts, 1841, p. 340, text figure: S. I. Smith, Report U. S. Com. Fish and Fisheries, 1872, p. 575 (281): R. Rathbun, Proc. U. S. National Museum, vol. 7, 1884, p. 485: J. F. Whiteaves, Cat. Marine Invertebrata cf Eastern Canada, 1901, p. 216: C. B. Wilson, Proc. U. S. National Museum, vol. 25, 1902, p. 707, pi. 12; pi. 26, fig. 80. Record of specimens. Ten specimens, including both sexts, were obtained August 1, 1919, at 8.45 p.m.: two males were obtained on the same date at 9.10 p.m.: a single male was obtained July 21, at 6.15 p.m. Reniarl^s. This species was doubtfully recorded by Mr. J. F. Whiteaves in the reference given above as attached to Casierosteus hiaculeaius Shaw, and other small fishes taken off Pictou island in the Gulf of St. Lawrence. All the other recorded lo- calities are much farther south. The present record substantiates that of Whiteaves and fully establishes the species in Canadian waters. Again it has hitherto been found only upon fish hosts in salt water; the present specimens were

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• bookauthorottawafi
• bookcentury1900
• bookdecade1920
• bookyear1920