Alsrae. 187 



■& 



Andrews, F. M., Conjugation of two different species of 

 Spirogyra. (Bull. Torrey bot. Club. XXXVIII. p. 299. June, 1911.) 



Notes and a figure of conjugation of Spirogyra crassa and 5. 

 communis. It was observed that "in most cases the contents of the 

 cells of the smaller species, 5. communis, passed over the larger 

 one, S. crassa, in the process of conjugation." The less common 

 condition (transfer from the larger species to the smaller) is shown 

 in the accompanying illustration. Maxon. 



Campbell, D. H., Notes on some Californian green algae. 

 (Torreya. XI. p. 17. January, 1911.) 



The writer calls attention to the occurrence of two species of 

 green algae, collected in certral California, which are not men- 

 tioned by Collins in his recent paper "The green algae of North 

 America." These are Pithophora oedogonia (Mont.) Wittrock and 

 Spondylomomm quatemarium Ehrhenb. The latter species has been 

 known only from Europe and Asia, and the California speci- 

 mens are considerably smaller. Maxon. 



Conn, H. W, and L. Washburn Webster. A preliminary 

 report on the Algae of the fresh waters of Connecti- 

 cut. (Bull. X. Conn. Geol. Nat. Hist. Survey. p. 78. pl. 1—44. 

 Hartford, Connecticut. 1908.) 



The scope of the present paper is indicated in the title. The 

 systematic treatment is confined chiefly to the larger groups, keys 

 being provided only to the genera. Few species are mentioned, 

 and these are in most instances not accompanied by descriptions. 



Maxon. 



Collins, F. S,, Notes on Algae. X. (Rhodora. XIII. p. 184—187/ 

 August, 1911.) 



Two new species and 1 new form are described : Dermocarpa 

 Vickersiae Collins, sp. nov., on fronds of Dictyopteris delicatida, Bar- 

 bados, Miss Anna Vickers; Chantransia Dufourii Collins, sp. nov., 

 on Sargassum vulgare, Beaufort, North Carolina, Hoyt; and Ahnfeld- 

 tia plicata forma furcatella Collins, forma nov., from Massachusetts. 



The following new combinations occur: Chantransia Dasyae Col- 

 lins (Acrochaetium Dasyae Collins); C. ßexuosa (Vickers) Collins [A. 

 flexuosum Vickers); C. Dictyotae Collins (A. Dictyotae Collins); C. 

 minima Collins (A. minimum Collins); C. Hoytii Collins (A. Hoytii 

 Collins). Maxon. 



Collins, F. S., The green algae of North America. (Tufts 

 College Studies. IL p. 79—480. pl. 1— 8. July, 1909.) 



The term „green algae" is here used in the broad sense and 

 not as synonymous with the „Chlorophyceae" of most modern wri- 

 ters. However, the Desmidaceae, Characeae, and Flagellates are 

 omittcd. The introduction contains a discussion of the scope of the 

 work, notes upon our present knowledge of this group, and sugges- 

 tions as to methods of collecting, preserving, and studying this 

 group of algae. Following this is the sytematic treatment, comprising 



