. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Column round, strong, with very unequal joints. This species differs from the preceding in the greater depth of thecalyx, the more elevated and less deeply grooved dome, and in the morenumerous and smaller spines. It also possesses a subcentral proboscis,instead of only a prominent anal aperture. The sculpturing of the platesis of a different character, and the surface of the plate depressed withpromine
. Annual report of the regents of the university of the state of New York on the condition of the State Cabinet of Natural History and the historical and antiquarian collection annexed thereto. Column round, strong, with very unequal joints. This species differs from the preceding in the greater depth of thecalyx, the more elevated and less deeply grooved dome, and in the morenumerous and smaller spines. It also possesses a subcentral proboscis,instead of only a prominent anal aperture. The sculpturing of the platesis of a different character, and the surface of the plate depressed withprominent margins almost the reverse of M. depressus. Geological formation and locality. In the shales of the Hamilton group:Western New-York. C. A. White, collector. CONTRIBNTIONS TO PALEONTOLOGY. 137 GENUS CACABOCRINUS ( Troost, Catalogue). DOLATOCRINUS? ( Lyon). The generic formula of this genus, according to the typical speciesof the author, is as follows : Basal plates, 3; Radials, 5X3; Radials of the second series, or supraradials, 10 x 1 or 2; Interradials, 1 to 10 or more. Anal area not distinguishable from the interradial areas. CACABOCRINUS ( Diagram of the typical species). a Qo;^. w^
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectscience, bookyear1853
