Volltext Seite (XML)
73 Locality and Horizon.—Russell’s Shaft, Earley, Co. Northumberland (The late Lev. TV. B. Clarke):—Upper Marine Series ; Nicholson’s Quarry, near north-cast corner of Owen’s 1,100 acres, near West Maitland, Co. Northumberland {Prof. T. TL. B. David, B.A., Lev. IB. II. Yarrington, M.A., and Mr. T. Browne) :—Lower Marine Series. The first locality is a very typical and interesting one, being referred to by the late Rev. W. B. Clarke, E.R.S., in a “ Section of Coal Pits at Stony Creek, New South Wales, near West Maitland,” 1 in the third bed from the surface, in Pit B. Ilis note is as follows :—“ Grey grit and conglomerate of quartz porphyry, &c., sandstone and soapy clay, muddy and blue; consistency variable, with Spirifer, Eenestella, Conularia, Orthoceras, Asteridse, &c.” The specimens described by Prof, de Koninck were also from the same locality and horizon. 2 PAL7E ASTER (MONASTER) StUTCHBURII, sp. nOV. PI. XIII, Fig. 1. Sp. Char.—Body elongate; disc probably of medium size, but general proportions unknown. Rays long, very slowly tapering, straight sided, forming with one another an angle of from 60° to 75°; abactinial surface moderately convex, bearing several (five or six) rows of small convex poly gonal plates, inclusive of the marginal pieces, and becoming much crowded at the apices of the rays, where they form oblique rows; marginal plates strong, short, thick, high, or somewhat pyramidal, and sublxexagonal in out line. Actinial surface more or less flattened; avenues narrow, straight sided; ambulacral plates unknown; adambulacral plates transversely oval, thick, and arched, clothed with short, subulate, stout spines, arranged in about three alternating rows ; oral plates very small, the two halves of each, pustuliform. Madreporiform plate unknown. Ohs.—Lalceaster Stutchburii, although vieing with P. ClarJcei in size is a straight rayed, and non-pctaloid form, of the true Lalceaster outline, and so differing from the latter, as well as in the increased number of plates on the abactinial surface. 1 Sedimentary Form. N. S. Wales, Fourth Edition, 1878, Vert. Section 1 (3rd plate). (8vo. Sydney. By Authority, 1878.) 2 Foss. Pal, Nouv.-Galles du Sud, Pt. 3, 1877, p. 168.