The Eurypterida of New York/Volume 2/Explanations of plates/Plate 82
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PLATE 82
Pterygotus (Erettopterus) globiceps nov.
Page 374
| 1 | Nepionic stage showing the enormous size of the lateral eyes, the position of the ocelli and the small number of segments. × 30 |
| 2 | Another larval specimen showing slightly different form of carapace, thickened rim of eyes and small number of segments of tapering abdomen. × 30 |
| 3 | An older (neanic) stage in which the abdomen has assumed the proportion and composition of the adult stage. A broad thickened rim surrounds the eyes. × 12 |
| 4 | Carapace of a young individual showing somewhat different characters, apparently due to compression in longitudinal direction. × 15 |
| 5 | Fragment of carapace of young individual, showing the smooth cornea of the eyes partly separated from the facettae. × 5 |
| 6 | Well preserved carapace. Type of the species. × 3 |
| 7 | Largest carapace observed. Shows the lateral eye, somewhat distorted by oblique compression (indicated by the wrinkles) and the ocelli. On the antelateral corner a fragment of the marginal shield of the ventral side with traces of ornamentation is seen. Natural size |
| 8 | Tergite showing antero-lateral lobes and ornamentation. × 3 |
| 9 | Second sternite with genital appendage of young female. × 3 |
| 10 | Swimming leg. Natural size |
Pterygotus (Erettopterus) sp.
| 11 | Portion of a telson showing fine bristles on the margin. Natural size |
| 12 | Telson of young individual. × 3 |
The figures 8, 10, 11 are referred with doubt to this species.
Pterygotus? sp.
| 13 | Problematical fossil, possibly the female genital appendage of a Pterygotus [cf. similar appendage of Pterygotus anglicus, Huxley and Salter, pl. 3, fig. 4, 5, 7]. Horizon and locality. Shawangunk grit. Otisville, N. Y. |
The originals are the State Museum
| Memoir 14. N.Y.State Museum. | Plate 82. |
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| G.S.B. et E.W.C.L. del. | J.B.Lyon Co. State Printer. |