NORTH AMERICAN PARASITIC COPEPODS: NEW GENERA AND SPECIES OF CALIGIN.E. By Charles Branch Wilson, Department of Biolof/y, State Normal tSchool, Westjleld, Mass. Durine: the summer of 1905 it was the author's good fortune to enjoy two months' study of the parasites which infest our Southern fishes. The work was carried on during the months of Jidy and August at the laboratory of the Bureau of Fisheries at Beaufort, North Carohna. For this vahiable opportunity the author is indebted to the courtesy of the Hon. George M. Bowers, U. S. Commissioner of Fish and Fish-eries, to whom acknowledgment is gratefidly made. Thanks are also due to Dr." Caswell Grave, the director of the laboratory, for placing at easy disposal every facility which the laboratory afforded. A good idea of the value and abimdance of the material thus gathered may be obtained fi'om the present paper, which includes only those forms belonging to the subfamily Caliginae, the others being reserved for future publication. This paper may be con-sidered as the supplement of the more extensive one already pub-hshed upon the same subfamily.** It also represents the first collected work upon the copepod para-sites of our Southern fishes. Isolated forms have been reported from the middle Atlantic by Leidy in 1855; from the southern Atlantic by Say in 1818; by Dana in 1854, and by Rathbun in 1884, and from the Danish West Indies by Kroyer in 1863. But all of these accounts include scarcely a dozen species, fidly two-thirds of which were described by Kroyer alone. Wliile Iris descriptions are nearly always accurate enough for purposes of classification, yet they w^ere all made from preserved material, and therefore of necessity give us notliing in regard to the coloration or habits. And only one or two of the species have ever been seen since their original description. aProc. U. S. Nat. Mus., XXVIII. 1905, p. 479. Proceedings U. S. National Museum, Vol. XXXIII— No. 1580. 593
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