Algae. — Fungi. 073 



phoraceae, while other genera and species have received careful 

 study calculated to place thcm upon a more satisfactory taxo- 

 nomic basis. Stigeoclonium becomes Myxonema of Fries. 

 Some additions have been made to our knowledge of repro- 

 ductive processes in these two families, particularly in con- 

 nection with the zoospores of Microspora. The following species, 

 with one variety and one form are described as nevv : Chaeto- 

 phora attenuata, Draparnaldia platyzonata, Myxonema ventri- 

 cosum, M. aestivale, M. attenuatum, M. glomeratum, M. stag- 

 natlle, Microspora tumidula, M. quadrata, Myxonema lubrt- 

 cum varians, Stichococcus scopulinus, Stichococcus bacillaris 

 forma confervoldea, Tribonema bombycinum forma minor Wille 

 is given the new form name of tenue and Sticchococcus marinus 

 becomes a species instead of a form of 5". varlabllls. The new 

 combinations are as follows: Chaetophora Incrassata, Micro- 

 spora crassior, Myxonema amoenum, M. nanum, M. subuligerum, 

 M. thermale, M. subsecundum, Stichococcus rtvu/aris, Tribonema 

 minus, T. utriculosum. Moore. 



MILLS, F. W. and PHILIP, R. H., The Dlatomaceue of the Hüll 

 District. (Trans. Hüll Scient. and Field Nat. Club. I. 1901. 

 p. 157—223. Plates XII— XXVIII.) 



This list of the Dtatom-F\ora. of the Hüll District comprises 

 about 600 species and varieties — a considerable advance 

 upon the previous lists published by G. Norman in 1859 and 

 1865, which contained about 400 and 480 species respectively. 

 The present list in fact represents nearly half the species that 

 are found in the British Isles. 



The Hüll District includes places within reach of a half- 

 day excursion from Hüll. Each species and variety is figured. 

 Most of thi ügures have been taken from Schmidt's Atlas, 

 Van Heurck's Synopsis and other Standard works, but 

 some have been drawn specially. The nomenclature and Classi- 

 fication are mainly those which have been adopted by Van 

 Heurck. Synonymy is excluded save in so far as it is 

 necessary for keeping in touch with Nor man 's lists. Atten- 

 tion is called in the Introduction to the fixity of certain species 

 in certain localities and on the other hand in the behaviour of 

 other species in their appearence in, or disappearence from 

 certain localities for unknown reasons. Norman' s slides have 

 been subjected to examination. Ethel S. Gepp (nde Barton). 



Mac ALPINE, D., Fungus diseases of stone -fruit trees 

 in Australia and their treatment. Melbourne 1902. 

 With 10 coloured plates and 327 figures. 



In the first part of this work the more important diseases are dealt 

 with, and illustrated by means of coloured plates; while in the second part 

 the diseases of less common occurrence, or of minor importance are 

 given. Part II also contains technical descriptions of the various fungi 

 referred to in Part I and likewise an account of all fungi hitherto found 



Botan. Centralbl. Bd. CX. 1902. 43 



