CBTPTOQAMIA. 483 



Lambeet ct BuRGTJE. — Etudes sur les Algues dans le departement 

 de I'Aisne ; par M. M. Ed. Lambert et Burgue, in 8vo. pp. 109. 

 (Extr. du Bulletin de la Societe litteraire et scientifique de 

 Chauny (Aisne). Paris, F. Savy. 



Lespinasse. — Les Zoospores et les Antherozoides des Algues, Mstoire 

 de la decouverte, du mouvement et des fonctions pliysiologiques de 

 ces organes ; par M. Gr. Lespinasse. Bourd. Soc, Linn. 1861. 



Lewis, F. W. — Notes on new and rare species of DiatomacefB of the 

 United States Sea Board. Phil. Proc. 1861. p. 61. 



LoBB. — On the self-division of Micrasterias denticulata. Lond. Mic. 

 Trans. 1861. p. 1. 



NaGELi. — Beitriige zur Morphologie und Systematik der Ceramiaceae- 

 Sitzungsberichte der konigl. bayerischen Akademie der Wissen- 

 schaften zu Miinchen. Vol. ii. p. 297. 



Tlie reputation of the author will ensure the attention of 

 Botanists to this paper on the structure, reproduction, and classi- 

 fication of the Ceramiacese. Its length precludes any detailed 

 account of it ia this place. 



Nate. — Algologische Notizen von J. Nave in Briinn. Bot. Zeit. 

 17 May, 1861. Vol. xix. p. 131. 



In this paper the author in the first instance endeavours to 

 show that Microhaloa originates from the discharged contents 

 of the cells of the threads of Tolypothrix. The formation of 

 Merismopaedia by division of the cells of Microhaloa, is after- 

 wards noticed, and he then mentions the occurrence of a Micro- 

 cystis very like Microcystis ceruginosa, Ktzg. which appeared to 

 arise from the irregular division and subsequent disintegration of 

 the Merismo])a3diae. He considers the connection between Toly- 

 pothrix and Microhaloa exti^emely probable, that the connection 

 between Microhaloa and Merismopaedia is beyond doubt, and the 

 connection betAveen the latter and Microcystis a very probable one. 



NoEMAN, Geoege. — On some uudescribed species of Diatomacese. 

 Lond. Mic. Trans. 1861. p. 3. 



Ntlandee. — Diatomaceis Fenniae fossilibus additamentum ; auct. 

 M. W. Ny Ian der. Saellskapets pro Fauna et Flora fennica 

 Notiser. Vol. vi. N. S. p. 147. (Published separately in 8vo. 

 pp.12). 



■ Notula circa Spermosiram et Nodulariam Algarum genera, 



scripsit William Nylander. A. S. N. Vol. xv. p. 34. 



In this note Dr. Nylander expresses an opinion that Nodu- 

 laria Suhriana, Klitz. Tab. Phyc. is probably only a young state 

 of Spermosira littoralis, Harv., and that possibly Spermosira 

 Vrieseona, and litorea Kiltz. may be also only states of S. lit- 

 toralis. 



Sciienk. — Zur Kenntniss der geschlechtlichen Fortpflanzung der 



Gattung Vaucheria, von Schenk. Wiirz. N. Z. Vol. ii. p. 201. 



The first portion of this paper contains a very short account 



of the development of the male and female organs of Vaucheria 



