. The Geology of Minnesota . Figs. 10, 11. Two views of an imperfect, partially enrolled individual of hotelus susce Whitfield. Formation and locality.—Specimens having about the same dimensions as the original occur in theHudson River group at Granger (Museum No. 8434) and two miles east of Spring Valley. Minn, (collectiopof Mr. Ulrlch). TRILOBITES. 709 Ptycliopyge ulriolil.] Subgenus PTYCHOPYGE, Angelin, 1854. Ptychopyge ulrichi, n. sp. This species is represented in the material before me by seven more or less com-plete pygidia; one small and entire, 21 mm. in length and 35 mm. in greatest
. The Geology of Minnesota . Figs. 10, 11. Two views of an imperfect, partially enrolled individual of hotelus susce Whitfield. Formation and locality.—Specimens having about the same dimensions as the original occur in theHudson River group at Granger (Museum No. 8434) and two miles east of Spring Valley. Minn, (collectiopof Mr. Ulrlch). TRILOBITES. 709 Ptycliopyge ulriolil.] Subgenus PTYCHOPYGE, Angelin, 1854. Ptychopyge ulrichi, n. sp. This species is represented in the material before me by seven more or less com-plete pygidia; one small and entire, 21 mm. in length and 35 mm. in greatest width;another, a part of a very large one, fully 120 mm. in width across the top. The generalform of the first is semi-oval except about the margins which are broadly co, Fig. 12.—An entire pygidium of Ptychopyge ulrichi. Cannon Falls. The lobation is clearly defined, the axis beiug relatively narrow, slightly more thanone-fifth the entire length of the shield, and extending for somewhat more thantwo-thirds the length of the pygidium, ending in a blunt, not elevated extremity.
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Keywords: ., bookcentury1800, bookdecade1890, bookidgeologyofmin, bookyear1897
