606 Palaeontologie. — Cryptogamen. — Algae. 



toire de Sinigallia (Ancone). Parmi les 61 especes qu'il enumere, 

 il decrit quatre especes nouvelles: Fagtis lanceolata Principi, sp. n., 

 Launis Gvidi '\6.., Persea hrachyphylla id. et Ligustrurn sinigalliense 

 id.. et il assimile au Salisbiiria adiantifolia Sm. les 5. adimitoides 

 Unger et 5. Procaccinii Mass. 



La flore tossile de cette region a ete etudiee a plusieurs reprises 

 par Massalongo et par Scarabelli; cependant cette contribution 

 lui ajoute les quatre especes susdites, et huit especes qui n'y etaient 

 pas connues: Alnus, nostratiim Jung., Carpinus ostryoides Goepp., 

 Fagiis pvistina Sap., Querciis fitrcUtewis Paol., Q. mediterrauea Ung., 

 Q. etymodrys Ung., Popnlus attemiata A. Br., Eugenia anconitmia Paol. 



L'auteur fait ressortir la grande analogie qu'a la flore fossile du 

 territoire de Sinigallia (Miocene superieur), avec celle d'autres 

 horizons geologiques, en tirant la conclusion que les vegetaux peu- 

 vent garder ' leurs formes specifiques plus longtemps que les ani- 

 maux, puisque ceux-ci sont tres variables d'une periode geologique 

 ä une autre. II fait aussi remarquer que cette flore caracterise un 

 climat tempere-austral; ä cöte de genres des climats temperes, 

 d'autres y sont caracteristiques des regions chaudes. 



R. Pampanini. 



Hoi'wood, A. R., On the disappearance of certain Crypto- 

 gamic Plauts from Charnwood Forest, Leicestershire 

 within historic times. (Abstract British Association, 1907. p. 684.) 



A summary of cryptogamic plants known to have become extinct 

 through enclosure, drainage, disforestation, smoke and other human 

 agencies. This applies mostly to Lichens, in a less degree to Mosses 

 and Hepatics. The distribution of several species in the Leicester 

 district is still limited to the former area of Charnwood. 



W. G. Smith. 



Ostenfeld, C. H., The Phytoplankton ofthe Aral Sea and 

 its Affluents, with an Enumeration of the Algae ob- 

 served. (Wissensch. Ergebn. d. Aralsee-Expedition ausgerüstet 

 von der Turk. Abt. d. Kais. Russ. Geogr. Gesellsch., Lief. VIII, 

 St Petersburg 1908. p. 123—225, with ^3 plates, and tables in 

 the text.) 



The examination of 82 samples collected by Dr. L. S. Berg in 

 the Aral Sea and the affluents to the sea in the years 1900 — 1903 

 has given the following results: 



1. A list of algae comprehending 19 Myxoph3xeae , 61 Chloro- 

 phj^ceae, 6 Flagellata, 1 Silicoflagellatum, 13 Peridinales and 58 

 Diatoms. 



2. Systematical remarks om some planktonalgae including descrip- 

 tions of the following new species: Aiiabaeiin Bergii, Prorocentnmi 

 obttisitnij Diplopsalis pühda, Peridiniuni subsalsurn and Coscinodiscus 

 avalensis, — all figured in the plates. 



3. In the lower parts of the rivers Syr-Darja and Amu- 

 Darja the quiet places and brack-waters contain a pond plankton. 

 In Syr-Darja the main forms are: Dinobryon diver gens, Peridi- 

 niutn inconspictiiitn, Diatorna elongatmn and Fragilaria virescens in 

 spring, some Myxophyceae and Protococcaceae in high-summer; in 

 Amu-Darja (in high-summer): Microcystis aeruginosa, Pediastrum 

 Simplex, Ceratiuin lürnndineUa and MeJosira äff. granulata. 



4. Several fresh water algae are carried out in the Aral Sea 



