ZOOLOGY AND BOTANY, MICROSCOPY, ETC. b 583 



Fresh-water Microfauna of Paraguay.* — E. von Daday has done 

 a big piece of work in his report on the collections of fresh-water 

 Plankton made by Professor J. D. Anisito in various parts of Paraguay. 

 The memoir deals with Protozoa, Hydride, Nematoda, Nematorhyncha, 

 Rotifers, Crustaceans, Tardigrada, and Hydrachnids ; and W. Michaelsen 

 reports on the Naididse. Altogether about 350 species are discussed, 

 including many new forms. 



Pelagic Organisms in Scottish Lakes .f — James Murray points out 

 that Scotland is favourably situated for the study of fresh-water plank- 

 ton, since it forms a meeting place for the northern and southern zoo- 

 plankton, the eastern and western phytoplankton. He takes a survey of 

 the characteristic forms. Many of them occupy areas which coincide 

 approximately. Thus Diaptomus laticeps, D. laciniatus, and the Des- 

 mids of the western type, alike extend over the whole of Scotland north 

 of the Caledonian Canal and into the Outer Hebrides ; south of the 

 Great Glen they are confined to the west coast and some of the central 

 counties, being entirely absent, so far as is known, from all the eastern 

 counties south of the Moray Firth. All have their eastern limit in some 

 small lochs about the extreme western corner of Aberdeenshire. A 

 prominent feature of the Scottish plankton is the Arctic character of 

 its Crustacea. 



Biology at Jena during the Nineteenth Century.$ — Ernst Haeckel 

 recalls some of the illustrious workers in Biology who were connected 

 with Jena during the last century. Starting with Goethe and Oken, he 

 briefly refers to the progress of a hundred years and to the work of men 

 like Emil Huschke, Matthias Schleiden, Oskar Schmidt, Carl Gegenbaur. 

 Biology at Jena has for many years centred in Haeckel himself. 



Bibliotheca Zoological — 0. Taschenberg has completed the seven- 

 teenth instalment of his list of zoological papers published between 1861 

 and 1880. It deals with palseontological literature. 



Tunicata. 



The British Tunicata. || — The first volume of an unfinished mono- 

 graph on The British Tunicata, by the late Joshua Alder and the late 

 Albany Hancock, has been edited by Mr. John Hopkinson, and the Rev. 

 A. M. Norman writes a prefatory history of the work. The work began 

 as a descriptive catalogue by Alder (finished in 1863), and was enlarged 

 to a monograph by Hancock during the subsequent ten years. Alder 

 died in 1867 and Hancock in 1873, and the unfinished work was left 

 for a time in Huxley's hands. As Huxley was unable to devote time to 

 making a presentable volume out of the manuscripts, they were returned 

 to Hancock's representatives, and have till last year remained in the 

 care of the Natural History Society of Newcastle-upon-Tyne. At Canon 

 Norman's request they were sent for publication to the Ray Society,. 



* Zoologica, xviii. (1905) Heft 44, pp. 1-374 (23 pis. and 2 figs.). 



t Proc. R. Phys. Soc. Edinburgh, xvi. (1905) pp. 51-62. 



\ Jenaische Zeitschr. Naturwiss., xxxix. (1905) pp. 713-26. 



§ Bibliotheca Zoologica, II. Lief. 17. Leipzig, 1905, 8vo, pp. 5165-5512. 



|| Ray Society, 1905, xii. and 146 pp. (20 pis.). 



