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Cope. 2

The four preceding species may be regarded as congeneric for the present, as they are similar in the forms of the vertebrae, especially in [p. 364] the lumbar diapophyses - A few years ago I defined a genus, based on several species from the Miocene of Maryland, in which the lumbar diapophyses are spiniform. Supposing the [[underlined]] Priscodelphinus harlani [[/underlined]] of Leidy to possess the same character I retained the same generic name for the Maryland species- After an examination of considerable material from the New Jersey locality, including bones of [[underlined]] P. harlanii [[/underlined]], I have failed to observe a single species with the spinous processes alluded to. It thus becomes evident that [[underlined]] Priscodelphinus [[/underlined]] must be retained for the species termed by me [[underlined]] Tretosphys [[/underlined]], while that for which I retained the name [[underlined]] Priscodelphinus [[/underlined]] must receive a new one. For this I propose [[underlined]] Belosphys [[/underlined]] with [[underlined]] B. spinosus [[/underlined]], Cope, as type, and [[underlined]] B. atropius, B. conradi [[/underlined]], and [[underlined]] B. stenus [[/underlined]] as species. At the same time I add that the presence of [[underlined]] Ixacanthus coelospondylus [[/underlined]], Cope, in the New Jersey Miocene mentioned in Cook's Geological Survey of New Jersey by the writer, is doubtful."

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Original document http://www.jstor.org/stable/981866