Algae. 449 



834. Dllophus flabellatus. La Jolla, California. 



1 1 33. Fucus vesiciilosiis L. forma limicola. Massachusetts. 



833. Sargassnm baccifenim (Turn.) J. Ag. forma angustum. 

 Lat. 25,58 N.; long. 73,39 W. 



1087. Batrachospermiim macrosporum (Wood) Collins, n, comb. 

 (= Chantransia macrospora Wood, 1872.). In a footnote this is 

 changed to B. au&trale, on account of an earlier B. macrosporum 

 Mont. (1850). 



990. Batrachospermiim vagiim Ag. var. flagelliforme Sirdt. forma 

 tenuissima. New York. 



836. Scinaia furcellata (Turn.) Bivona forma complanafa. 

 Florida. 



1138. Celldinm Crinale (Turn.) J. Ag. forma luxurians. Paci- 

 fic Beach, California. 



1 1 39. Gigartina canaliciilata Harv. forma laxa. La Jolla, 

 California. 



1140. Cystoclonium pnrpurascens {Wnds.) Kütz. forma stellatum. 

 Maine. 



938. Delesseria quercifolia Bory var. linearis. Vancouver 

 Island. (In a footnote this is changed to Schizoneura quercifolia 

 (Bory) J. Ag. forma linearis Collins, n. comb.) 



636. Chondria tenuissima (Good. and Woodw.) Ag. forma Cali- 

 fornica. La Jolla, California. 



996. Chondria dasypylla (Woodw.) J. Ag. forma Floridana. 

 Florida. 



698. Callithamnion Halliae. Key West, Florida. 



1148. Ptiloia pectinata (Gunner) Kjellm. forma tenuis. 

 Washington. 



847. Ceramium strictum (Kutz.) Harv. forma proliferum. Con- 

 necticut. 



750. Halymenia Floridana J. Ag. forma dentata (Crouan) n. 

 comb. Florida. 



650. Corallina gracilis Lamour. forma densa. California. 



The author also formally publishes a description of Lyngbya 

 (Leibleinia) subtilis Holden, n. sp., as distributed .under no. 1163. 



Maxen. 



CusHMAN, Joseph Augustine, New England desmids of the sub- 

 family Saccodermae. (Bulletin of the Torrey Botanical Club. 

 XXXlll. June 1906. p. 343-351.) 



Twenty species and several varieties under 5 genera are listed, 

 with diagnoses, from New England. There is provided also a 

 key to both genera and species. 



The foUowing are described as new: Gonatozygon monotaenium 

 var. minutum, Spirotaenia obscura var. crassum and Cylindrocystis 

 diplospora N2iX. minor, from Massachusetts; also, Mesotaenium 

 minimum, from Rhode Island. Maxon. 



FosLiE, M. and M. A. HowE, New American coralline Algae. 

 (Bulletin of the New York Botanical Garden. IV. March 17, 1906. 

 p. 128—136. plates 80—93.) 



The following coralline algae are described jointly by the authors 

 as new: Archaeolithothamnion dimotum, Lithothamnion fruticulosum 

 aemulans, Goniolithon strictum nanum, Lithophyllum daedaleum and 

 L. d. pseudodentaium, all from Porto Rico; Lithothamnion meso- 



Botan. Centralbl. Band 102. 1906. 29 



