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Show 1 9 0 6 . ] OF THE NEW ZEALAND LAKES. 6 9 5 Trans. & Proc. New Zealand Institute, vol. xi. (1878) p. 261, pi. xi. fig. E, 2, a -e ; G. O. Sars, Freshwater Entomostraca of New Zealand, 1894, p. 10, pi. ii. A few specimens found in company with the preceding species in the Rotoiti gathering and in a similar netting from Waikare Lake. C erio d aphn ta gloeosa, sp. n. (Plate XLVIII. figs. 1-3.) Female. Outline as seen laterally subquadrangular, rounded; the head separated from the rest of the body by a very deep cervical depression, much flattened in front and produced ventrally into a rounded lobe the extremity of which is almost filled by the large eye; hinder part of the body almost circular, with a large triangular, sharply pointed projection above the middle of the posterior margin (fig. 2) ; dorsal margin boldly arched, ventral also arched but less so than the dorsal; seen ventrally the outline is broadly elliptical (fig. 1), greatest width in the middle and equal to about two-thirds of the length, anterior extremity forming a rounded protuberance which is nearly filled by the eye, posterior produced into a sharp triangular spine. Shell devoid of marginal hairs, and showing no surface-markings except a uniform dotting. The antennae and other appendages are of the usual form. Caudal lamina armed with a long, slender terminal claw (fig. 3), which is quite simple and destitute of marginal setze or pectinations; posterior margin of the lamina bearing at the distal extremity a series of about eight slender spines. Length *76 mm. Habitat. Roto Aira, in vertical nettings to a depth of 50 feet, in Taupo Lake at 450 feet, and in a netting among reeds in Waikare Lake-abundant in all these gatherings. It is interesting to note that all the three lakes in which this Ceriodaphnia occurs lie, as Mr. Lucas tells me, on a single river, the Waikato. B osmina m er id io n a l is G. 0. Sars. (Plate X LVIII. figs. 4, 5.) Bosmina meridionalis G. O. Sars, Pacifische Plankton-Crustaceen (Zoolog. Jahrbiich. v. 1903) p. 631, Taf. 34. figs. 3 a-c. Professor Sars's type specimens were taken in Wakatipu Lake, New Zealand, and it occurs in greater or less abundance in most of the lake gatherings. I have seen only females, nor did any males occur in the gatherings examined by Sars. C o p e p o d a . B o eck e l l a t r ia r t ic u l a t a (G. M. Thomson). Boeckia triarticulata Thomson, Trans. & Proc. New Zealand Institute, vol. xv. (1882) pi. vi. figs. 1-9. Boeckella triarticulata G. O. Sars, Freshwater Entomostraca of New Zealand, p. 49, pis. vii. & viii. |
