462 SUMMARY OF CURRENT RESEARCHES RELATING TO 



described ; and both occur on Alaria esculenta. Many of the species- 

 names are followed by critical notes and remarks. 



! * Flora of Koh Chang.*— The Messrs. West publish a list of 124 



fresh-water algae from this island, of which nine species and seven 

 varieties are new. A complete description is also given here for the 

 first time of Micrasterias Mobii West and G. S. West. The paper is 

 illustrated by three plates. 



Major Eeinbold gives a list of 62 marine algse other than Ooralli- 

 nacea?, for this district. The new species described are : Boodlea (coacta 

 var. ?) siamensis and Rhabdonia Schmidtii ; a new forma major of Aspero- 

 coccus fastigiatus is described, and a forma prolificans of Gracilaria dura. 

 A plate is given of Bhabdonia Schmidtii. 



Mons. Gomont records 27 species of Myxophyceae, of which Scytonema 

 Schmidtii and Brachytrichia maculans are new. Both are figured on 

 one plate. 



The number of Peridiniales recorded by J. Schmidt is 44, con- 

 taining the description of a new genus Ostreopsis, represented by the 

 species O. siamensis, and a new form and a new variety of other species. 

 The paper includes eight figures in the text. 



Mycetozoa and Fungi. 



Notes on Mycetozoa.f— Arthur Lister and G. Lister have established 

 a new species Chondrioderma asteroides from a specimen collected by 

 Miss A. Fry at Ventimiglia. The outer dark-coloured wall of the 

 sporangium, which is marked by dark lines or furrows, dehisces in a 

 stellate manner into about eight to twelve reflexed lobes, which are 

 snow-white on the inner side. The subglobose columella is also white 

 or pale cream-coloured. The spores are purple brown. The authors 

 consider it to be most nearly allied to C. radiatum Eost., but quite 

 sufficiently distinct to be worthy of specific rank. A note is given on 

 Physarum gyrosum Eost. The original specimen grew in a hot-house 

 in Berlin, and the writers held it at one time to be identical with 

 Fuligo septica. An interesting series of specimens sent by Dr. Jahn 

 from South America have led them to the conclusion that P. gyrosum 

 is a distinct species. 



A careful study of Dr. Ladislav Celakovsky's Die Myxomyceten 

 Bdhmcns, and a comparison of his specimens with types in their posses- 

 sion, have enabled them to make a number of corrections with which 

 Dr. Celakovsky fully agrees. A number of new species were found to 

 be merely variations of forms already described. They now publish 

 the result of this examination. 



The Acrasieae.t — A monograph of this group is in preparation by 

 Edgar W. Olive, and in the meantime he has published a preliminary 

 enumeration of the Acrasieae and their allies under the general term 

 Sorophorese. The author has discovered a new genus Guttulinopsis with 

 three species. The genus is characterised by the lobose pseudopodia of 

 the myxamosbae; the fructifications of all the species are yellowish 



* Botan. Tidsskrift, xxiv. (1901) pp. 157-221. 



t Journ. Bot., xl. (1902) pp. 209-13 (1 pi.). 



% Proo. Amer. Acad. Arts and Sci., xxxvi. (1901) pp. 333-44. 



