The Eurypterida of New York/Volume 2/Explanations of plates/Plate 84
PLATE 84
Eusarcus longiceps nov.
Page 257
| 1 | Carapace of young specimen showing outline and position of lateral eyes. Natural size |
| 2 | Carapace of young specimen with traces of ornamentation |
| 3 | Well preserved specimen, showing marginal border and outline of ventral side (as darker rim). Probably somewhat compressed in posterior part. Natural size |
| 4 | Largest carapace observed. The lateral margin is partly folded under and the specimen appears therefore too narrow. The lateral eyes and ocelli are well preserved in the specimen; the former are somewhat displaced by the folding. Natural size |
| 5 | Carapace and preabdomen; the former apparently retaining the original outline. Type. The preabdomen is imperfect. Natural size |
| 6 | Large carapace with the marginal shield of the ventral side thrown outward in the posterior part. Natural size |
Eusarcus triangulatus nov.
Page 258
| 7 | Largest and most perfect carapace observed, apparently but little distorted and retaining the first tergite. Type. Natural size |
| 8 | Small carapace with fragment of first tergite. × 2 |
| 9 | Carapace and preabdomen much distorted, but showing their great width. The swimming leg is too indistinct for accurate figuring. Natural size |
Disjecta membra referable to Eusarcus
| 10 | Metastoma, possibly belonging to Eusarcus longiceps. × 2 |
| 11, 12 | Metastomas, possibly belonging to Eusarcus triangulatus. Natural size |
| 13–16 | Patches of integument exquisitely retaining the ornamentation. The latter exhibits considerable variation, recalling the ornamentation of Eusarcus and Echinognathus. Figure 13, × 4; figure 14, × 5; figure 15, × 2; figure 16, × 5 |
| 17 | Portion of abdomen, comparable in outline to that of a Eusarcus. Natural size |
| 18 | Postabdominal segment, recalling that of a Eusarcus. Natural size |
| 19, 20 | Spines of endognathites, belonging to this genus, or to Echinognathus or Stylonurus. Natural size Horizon and locality. Lower Siluric: Schenectady shale. The originals of figures 1–7, 10, 11, 13–16, 18–20 are from the Dettbarn quarry at Schenectady, those of figures 8, 9 from Duanesburg, that of figure 12 from Rotterdam Junction and that of figure 17 from Aqueduct, all in Schenectady county. All originals are in the State Museum |
| Memoir 14. N.Y.State Museum. | Plate 84. |
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| G.S.Barkentin del. | J.B.Lyon Co. State Printer. |