THE BOG-MOSSES OF ESSEX. 111
(70) STEBBING, T. R. R.: "On a Crustacean of the Genus Zia." Ann.
Mag. Nat. Hist. Ser. 4., Vol. XI. (1873).
(71) STEBBING, T. R. R.: The Victoria County History of Essex (1903);
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(71a) STEBBING, T. R. R.: The Victoria County History of Buckinghamshire
(1905); Crustacea.
(72) VEJDOVSKYF: "Zur Morphologee der Antennen und Schalendruse
der Crustaceen." Zeit. Wiss. Zool., Vol. LXIX., p. 378.
(73) VERHOEF, K. W.: "Ueber Palaearktische Isopoden. Zool. Ant.,
Vol. XXIV.
(74) WEBB, WILFRED MARK: "The occurrence in Essex of a species of
Woodlouse (Isopoda) new to Britain (Porcellio ratzeburgii, Brandt)."
Essex Naturalist, Vol. XI. (1899), p. 127.
(75) WEBB, WILFRED MARK: "Notes on Woodlice" (Including
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(1900), pp. 295-296.
(76) WEBER, MAX.: "Uber einige neue Isopoden der Niederlandischen
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(77) ZADDACH, E. G.: Synopses crustaceorum Prussicorum prodromus
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(78) ZENKER, C. D.: No paper upon woodlice by this author is known, but
he is quoted in Panzer's Deutschlands Insecten (51), which see.
(79) ZITTEL, K. A. von: Textbook of Palaeontology. English Translation,.
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THE BOG-MOSSES (SPHAGNACEAE) OF ESSEX:
A CONTRIBUTION TO THE FLORA
OF THE COUNTY.
Read by FRED. J. CHITTENDEN, County Technical Laboratories, Chelmsford.
THE present paper is an attempt to collect the scattered
records of the occurrence of the Bog-Mosses in Essex, to
bring the nomenclature into line with more recently published
lists, to define the limits of their distribution at the present day,.
and to correlate their distribution with the geological formation
of the county.
In the Victoria History of Essex the following remark occurs
respecting the Sphagnaceae or Bog-mosses: "Comparatively few
species of Sphagna are recorded, but the list of species of this
genus will probably be largely increased by further investi-
gation."