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I.—On a New British Isopod (Cyclosphæoma Trilobatum) from the Great Oolite of Northampton

Published online by Cambridge University Press:  01 May 2009

Henry Woodward
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Extract

Mr. Thomas Jesson, B.A., F.G.S., of Great Houghton House, Northampton, was lately so fortunate as to discover in the Great Oolite of that county, a new and most interesting example of an Isopodous Crustacean, which, by his kindness, I am permitted to figure and record in the Geological Magazine.

Type
Original Articles
Information
Geological Magazine , Volume 7 , Issue 12 , December 1890 , pp. 529 - 533
Copyright
Copyright © Cambridge University Press 1890

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References

page 529 note 1 See Geol. Mag. 1889, pp. 193–196 Google Scholar, Pl VI. Figs. 1–7.

page 529 note 2 A History of the British Sessile-eyed Crustacea, by Bate, C. Spence and Westwood, J. O., 1868, in 2 vols.; vol. ii. p. 398, etc.Google Scholar

page 530 note 1 In the majority of the Isopoda the “head” segments become fused with the first segment of the thorax, and form a cephalic shield which is freely movable upon the second thoracic segment. In Serolis the first and second thoracic segments are closely united, and completely fused dorsally, though the sterna of the two remain distinct; in some species an incomplete transverse suture upon the first epimera seems to mark the line of division between the two segments dorsally; in others the epimera of the two thoracic segments are completely united, and show no traces of their original distinctness; these epimera are always largely developed, and completely inclose the cephalic shield on both sides (Frank E. Beddard, iteport on the Isopoda collected by H.M.S. “Challenger,” during the years 1873–76. Part I. Serolis: Zoology, vol. xi. 1884, p. 8).Google Scholar

page 532 note 1 See remarks in Monograph on the British Carboniferous Trilobites, by Woodward, H., Pal. Soc. Mon. 1883–84. p. 76 Google Scholar.

page 532 note 2 See Article “Crustacea,” Encyclopædia Britannica, 1877, ninth edition, vol. vi. p. 659, fig. 72, A—E, by Woodward, H..Google Scholar

page 532 note 3 See my paper “On Eocene Crustacea from Gurnet Bay, Isle of Wight,” Quart. Journ. Geol. Soc. 1879, vol. xxxv. pl. xv. pp. 342–350, on Archæoniscus, p. 349.Google Scholar