ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 577 



e - Crustacea. 



Idotea hectica.* — Walter E. Collinge describes this imperfectly 

 known species from the Atlantic. It belongs to that division of the 

 genus Idotea which is characterized by the narrow, elongated, filiform 

 body, and in which the epimera are either not visible dorsally, or else 

 are very small. The division contains such species as /. linearis Linn., 

 /. indica M.-Edwards, and /. elongata Miers. 



Monograph on Phyllopoda conchostraca.f — Eug. Daday de Dees 

 continues his systematic account of Phyllopods, and deals with the 

 group " Conchostraca," which includes the familiesjjynceidae, Limna- 

 diida3,Cyclestheriida3,Ca3nestheriida5,and Leptestheriidae. In the present 

 instalment the author discusses Camestheriidas, with the new genera 

 Csenestheria, Csenestherietta, and Eocyzicus, and the genus Estheria, now 

 called Gyzicus Aud. 



Pelagic Entomostraca of Durban Bay. J— G. Stewardson Brady 

 reports on a collection of two species of Cladocera and fifty-four species 

 of Copepoda. Among the Copepods are several new genera — Metranura 

 (closely allied to Paracalanus and Acrocalanus), Isocope (differing from 

 other Pontellidse chiefly in the structure of the swimming feet and 

 posterior antennas), Oithonopsis (differing from Oithona in its remarkably 

 short abdomen and in its posterior antennae and mouth parts). 



Entomostraca of the Albert Nyanza.§— VV. A. Cunnington reports 

 on a collection from this great lake which is but slightly known faunisti- 

 cally. In all only ten species are known, a small number when it is 

 remembered that the lake has a superficial area of some 2000 miles. 

 The species now reported were collected by Leiper and identified 

 by Sars. 



Parthenogenetic Generations of Daphnia.|j — A. M. Banta has 

 succeeded in rearing as many as one hundred generations of Daphnia 

 pal ex without sexual forms, from large females taken from a pond in 

 which there were no male or " winter " eggs to be found. Each line 

 was propagated by selecting from the first brood of a young female when 

 the brood was released from the pouch. Each individual was placed in 

 a separate bottle with standard food and left undisturbed till the first 

 brood appeared. There was no sign of decreased vigour or loss of 

 vitality in the lines, and the author concludes that the sexual cycle in 

 D. pulex is not an inherent necessary thing, but is determined by 

 environment. 



Northern and Arctic Fresh-water Ostracods.lf — G-unnar Aim 

 records a large number of new localities (in Siberia, Nova Zembla, 

 Finland, Greenland, Spitzbergen, etc.) for species of Oypris^ Eucypris, 

 Gydocypris, Gandona, and other fresh-water Ostracods. Some new 



* Ann. Nat. Hist., xvi. (1915) pp. 162-4 (1 pi.). 

 t Ann. Sci. Nat. (Zool.) xx. (1915) pp. 39-192 (41 figs.). 

 J Ann. Durban Museum, i. (1915) pp. 134-46 (6 pis.). 

 § Ann. Nat. Hist., xvi. (1915) pp. 80-3. 

 || Proc. Soc. Exp. Biol. Med., xi. (1914) pp. 180-2. 

 1 Arkiv Zool., ix. (1914) No. 5, pp. 1-20 (1 pi. and 8 figs.). 



