Buffalopterus (Eurypterus) pustulosus Hall Page 201 See plate 23 1 Interior view of postabdomen, lacking the last segment. Original of Pterygotus globicaudatus Pohlman. Natural size 2 Enlargement of anterior portion of a carapace, reproduced in plate 23, figure 1, showing character of ornamentation and margin. Ocellar mound with traces of ocelli in lower left corner. × 3 3 Enlargement of posterior portion of the same carapace, to show character of ornamentation. Ocellar mound in front. × 3 4 Enlargement of portion of specimen represented in figure 1 to show character of scales on tergite Horizon and locality. Bertie waterlime. Buffalo, N. Y.

All figures are from photographs, of which the originals are in the museum of the Buffalo Society of Natural Sciences