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Plate 9. Figs. 3, 4.
Caryocaris wrightii Salte, 1863, pp. 135, fig. 15, pp. 137 and 139. Jones and Woodward, 1892, p. 89, pl. xiv, figs. 11–15, figs. 5, 6 (woodcuts). Chapman, 1908, p. 281, pl.-figs. 2, 3, 5. Idem, 1912, p. 212, pl. xxvii. Id., 1923, p. 42, pl. vii, figs. 11–15.
Observations.—This common Upper Cambrian and Lower Ordovician species is well represented in the present collection. It was originally described from the Skiddaw Slates in England, and the writer has since recorded it from various localities in Victoria, as Loyola (Up. Cambrian); Marong (L. Ordovician-Bendigonian); as well as in erratics of Lower Ordovician black shale in the Permocarboniferous glacial beds of Wynyard, Tasmania.
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The wide distribution of this species may be judged by its occurrence elsewhere. Besides the Skiddavian of England and Wales, it has also been found in the equivalent Arenig of the Firth of Clyde in Scotland, as well as in the Arenig of Belgium (Malaise) and the calciferous group (Tremadoe) of Nevada, North America (Gurley).
Referring to the foregoing list of determinations, it will be seen that Caryocaris wrightii is fairly well represented in the New Zealand Lower Ordovician.
On Plate 9, fig. 3, is shown a typical, fairly large carapace with an exceptionally strong dorsal fold. Fig. 4 on the same plate shows the trifid caudal appendages, also seen in a Belgian specimen as figured in Jones and Woodward (1892, p. 91, woodcut, fig. 6), and also another from the Upper Cambrian of Loyola, Victoria, by Chapman (1923, pl. xii, fig. 14).
Locality.—No. 112, Loc. 3. No. 797, Loc. 12. No. 972, Loc. 4. Nos. 1330, 1332, 1344, Loc. 15. Preservation Inlet, New Zealand. Also from Cape Providence (Park. Coll.).
Horizon.—L 3, L 2, and C 4.