ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 3 i 9 



mass surrounded by chromosomes. A blepharoplasl is demonstrable, 

 from which the flagellum may arise by two filaments. There are often 

 green chloroleucites. The cytoplasm contains grains of paramylon. 

 Reproduction may occur by asexual vegetative division or by a sexual 

 method, but substantial evidence as to the phases of the latter is still 

 absent. Most species live in fresh-water, a few are marine, and a few 

 are parasitic. 



The order is divided into three families : the Buglenidae, which are 

 holophytic, and the Astasiidae and Paranernidfe, which are saprophytic 

 or saprozoic. Four new species are described, including Scytomonas 

 dobelli, from the digestive tract of Molge vulgaris, and Plmotia marina, 

 a marine form, from Woods Hole. A large number of genera and species 

 are dealt with. 



Foraminifera from Australian Coast.* — Frederick Chapman re- 

 ports on a collection made by the F.I.S. ' Endeavour ' from the east coast 

 of Tasmania and off Cape Wiles, South Australia. The list includes 

 over 150 species, some of which are of considerable interest. Figures are 

 given of new varieties of Spiroloculina dorsata Reuss, S. grata Terquem, 

 Comuspira carinata Costa, and of the species Marsipella cylindrica Brady 

 (from 1122 fathoms), Marginal inn costata Batsch, and Cristellaria tri- 

 carimlla Reuss. 



Sporozoa of Spatangoids.t— Helen L. M. Pixell-Croodrich has 

 studied the Sporozoa of EcMnocardium and Spatangus, previously 

 referred to Lithocystis schneideri Criard, but including at least five 

 species. Two new ones are described, L. foJiacea and L. microspora. 

 The genus Urospora is also represented by U. neapolitana sp. n. and 

 U. echinocardii sp. n. There is no such species as " Urospora ssenuridis'''' 

 which has been ascribed to T.ubifex by some authors. The so-called 

 "solitary encystment" of Lithocystis is not a normal stage, but is the 

 result of necrotic specimens attacked by the phagocytes of the host. In 

 both Lithocystis and Urospora there is intercalated a stage — prozygote 

 — in which the cytoplasm of the gametes has fused and the tail of the 

 spore has appeared, but the nuclei have not yet combined to form the 

 synkaryon of the true zygote. In Urospora, both the " male " gamete 

 and the prozygote are flagellated and motile. 



New Acanthosporid Gregarine.J — Max M. Ellis describes Prismato- 

 spora era/isi g. et sp. n. from nymphs of dragon-flies collected near 

 Douglas Lake, Michigan. The sporocyst is prismatic, composed of a 

 central, regular, hexagonal prism, capped at each end by a regular, 

 truncated, hexagonal pyramid. There are long spines, in two series of 

 six each, inserted symmetrically in the tetrahedral angles at the junctions 

 of the apical pyramids with the central prism. There are no equatorial 

 or polar spines. The epimerite is subglobose with lateral recurved 

 hooks. The new genus stands close to Cometoides Labbe. 



The parasites occurred in the pre-rectal alimentary canal and coul i 



* Biol. Results ' Endeavour,' iii. (1915) pp. 3-33 (1 pi.). 



t Quart. Jouru. Micr. Sci.. lxi. (1915) pp. 81-104 (1 pi.). 



\ Trans. Amer. Micr. Soc, xxxiii. (1911) pp. 215-22 (7 figs.). 



