Page:The Eurypterida of New York Volume 1.pdf/268



Hall. Palaeontology of New York. 1859. 3:414, pl. 83, fig. 1; pl. 83A, fig. 1

Professor Hall based his description of this genus Dolichopterus and of its genotype  upon a single specimen from the waterlime at Williamsville. This is now in the American Museum of Natural History and is unique in its state of preservation, for it can be lifted bodily out of the matrix and exhibits both sides; these were so accurately figured by Whitfield that new figures can add only immaterial features. Unfortunately, however, this type lacks the greater part of the postabdomen and telson and retains only the proximal portions of the limbs, save the last pair, besides being incomplete in such other important points as the posterior portion of the metastoma, the opercular appendages and the operculum itself. It is therefore extremely gratifying that later collections in this State have afforded three more specimens of this extremely rare species which happily supply the desired information. The most important of these is a specimen from the famous locality of Wheelock's hill, Litchfield [pl. 43]. This retains the postabdomen and telson and furnishes important information as to the limbs