Publications . Plate 11 All figures approximately natural size I^iyiire 1.— Trigonia columhiana, n. sp. Tyi)e sjieeimen. Upper Cretaceous,Haiila formation, Queen Charlotte Islands, B. C. Figure 2.— TritfoiAa iietrconibei, n. sp. Specimen from Newcombe collectionfrom .Skidegate Inlet. Queen Charlotte Islands, B. C. F-gure .S.—Trigonia columhiana, n. sp. Drawing by Eachel Husband, basedupon several specimens from University of Oregon locality 104,>Skidegate Inlet, Queen Charlotte Islands, B. C. L -^^ Plate 11.

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Keywords: ., bo, bookcentury1900, bookdecade1920, bookpublishernp, bookyear1921