File:Geological magazine (1914) (14764276172).jpg

Identifier: geologicalmagazi611914wood (find matches)
Title: Geological magazine
Year: 1864 (1860s)
Authors: Woodward, Henry, 1832-1921
Subjects: Geology
Publisher: London (etc.) Cambridge University Press
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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Text Appearing Before Image:
ength 6 to 65 mm.; front wallsflatly arched, slightly below rather sharply defined side walls justbelow the aperture but rising flush with and merging into themtowards the foot; in the upper part of the zooecium the side wallshave a strong tendency to bulge out low down, occasionally producinga sort of external front wall with quite an abrupt margin ; aperturessmall, high, and narrow with a straight lower lip, upwards fromwhich the almost straight sides converge very gradually until theyare ended by a very flat arch ; paired, circular, flat, wide, perforatedspine bases occur on the margin at about half the height, and impingeslightly on the aperture ; above them come a pair of pores situateclose to the margin just below the upper corners, and another pairoccur close together in the centre of the arch. 1 Pal. Fran.?. Terr. Cret., torn, v, p. 389, pi. 712, figs. 1, 2. 2 Geol. Norfolk, by Samuel Woodward, 1833, tab. iv, fig. 7.2 Loc. cit., p. 454, pi. 605, figs. 14, 15. Geol. Mag., 1914.
Text Appearing After Image:
ii. M. Brydone, phot. Bemrose d- Sans Ltd., Collo. Chalk Polyzoa, R. M. Brydone—Neiv Chalk Polyzoa. 99 Ooscia fairly abundant but very delicate, the one figured being theonly perfect one I have met with, small, and of the water-bottle type,with a globose body, a strongly constricted neck, and a slightlyexpanded lip; beneath them the margin of the aperture is deeplycut away. Avicularia small, mandibular, apertures tending to be hourglass-shaped, very numerous, every zooecium having normally on eitherside of its head a slightly diverging pair, whose upper ends rest inhollows in the succeeding zooeciiim ; others are scattered aboutirregularly, and some of these develop long convex bodies and may-become sub-vicarious. This species, while distinguishable from Somalostega vespertilio,Hag., sp.,^ by the presence of ooecia and the almost rectangular lowercorners of the aperture, Avould be very near it but for the absence inH. vespertilio of the apertural spine bases and pores of II. nitesce

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