Proceedings of the United States National Museum . JE mm. Trichostrongylus calcaratus and Nematodirus leporis For explanation of plate see page 6 U. S. NATIONAL MUSEUM PROCEEDINGS. VOL 66, ART. 16 PL. 2. looyu. Obeliscus cuniculi For explanation of plate see page ILLUSTRATIONS OF UNFIGURED TYPES OF SHELLSIN THE COLLECTION OF THE UNITED STATES NA-TIONAL MUSEUM By William Healey Dall Honorary Curator of Mollnsks, United States National Museum In past years it has happened that it had been advisable to printpreliminary diagnoses of new species in order that established namesmight be used in r
Proceedings of the United States National Museum . JE mm. Trichostrongylus calcaratus and Nematodirus leporis For explanation of plate see page 6 U. S. NATIONAL MUSEUM PROCEEDINGS. VOL 66, ART. 16 PL. 2. looyu. Obeliscus cuniculi For explanation of plate see page ILLUSTRATIONS OF UNFIGURED TYPES OF SHELLSIN THE COLLECTION OF THE UNITED STATES NA-TIONAL MUSEUM By William Healey Dall Honorary Curator of Mollnsks, United States National Museum In past years it has happened that it had been advisable to printpreliminary diagnoses of new species in order that established namesmight be used in reports, or for other reasons. As opportunity offered, drawings were secured of these species andput aside until publication could be made. The present paper collects together a large number of these addition to the figures of types, a few figures of species elsewhereinadequately illustrated, or which are figured in publications diffi-cult of access, have been included. The earlier of these draAvings were made by the late Dr. J. , whose work of this kind has never been surpassed. Thefigures on plate 9, 19 to 26, and a few scattered ones on other platesare by him, and form probabl
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
