Page:The Eurypterida of New York Volume 2.pdf/280

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Pterygotus macrophthalmus Hall
Page 350
See plate 69, fig. 2–7; plate 71

1 Ventral view of a nearly entire specimen showing the operculum with female genital appendage and the other sternites, a swimming leg, a detached distal portion of a chelicera and the long, club-shaped basal joint of another
2 Well preserved telson of a larger individual showing the elongate form. Natural size
Horizon and locality. Cranes Corners, Herkimer co., N. Y.


Pterygotus monroensis Sarle
Page 380

3 Fragment of free pincer or chela probably belonging to this species. Natural size
4 Metastoma, probably belonging to this species. Natural size
5 The type. Carapace. Natural size
Horizon and locality. Pittsford, Monroe co., N. Y.


Pterygotus? sp.

6 Fragment of carapace, probably belonging to Pterygotus. Natural size
7 Distorted carapace of a Dolichopterus or Pterygotus. Natural size
8 Telson of a Pterygotus. Natural size
Horizon and locality. McKenzie formation (Basal Cayugan period of Upper Siluric). Near Hancock, Md.

The originals of figures 1–5 are in the State Museum, those of figures 6–8 in the National Museum

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