206 



Leathesia difformis (L.) Aresch. — Probably the young thalli on Zoster a. 



Lithophyllum pustulatum (Lamour.) Fosl. 



Lomentaria uncinata Menegh. 



Melobesia Lejolisii Rosan. — On leaves of Zoslera. 



Mesogloia divaricata (Ag.) Kutz. 



Monoslroma leptoderma Kjellm. 



M. undulatum Farlowii Fosl. 



Petalonia fascia (Mull.) Kutz. 



Phyllophora membranifolia (Good. & Woodvv.) J. Ag. 



Polyides rotundus (Gmel.) Grev. 



Polysiphonia elongata (Huds.) Harv. 



P. Harveyi Bailey 



P. nigrescens (Dillw.) Grev. 



P. Olneyi Harv. 



P. urceolata (Lightf.; Grev. 



P. urceolata formosa (Suhr) J. Ag. 



P. variegata (Ag.) Zanard. 



Punctaria latifolia Grev. 



Pylaiella littoralis (L.) Kjellm. 



Rhodermis Georgii (Batt.) Collins — On leaves of Zostera. 



Rhodomela subfusca (Woodw.) Ag. — Also the red form, approaching Rhodomsla 



Rochet Harv. 

 Rhodymenia palmata (L.) Grev. 

 Sargassum Filipendula (Ag.) J. Ag. 

 Scytosiphon lomentarius (Lygyb.) J. Ag. 

 S. lomentarius complanatus Rosev. 

 Spermothamnium Turneri (Mert.) Aresch. — Attached to the base of Polysiphonia 



elongata. 

 Sphacelaria cirrhosa (Roth) Ag. 

 Spyridia fdamentosa (Wulf.) Harv. 

 Sterrocolax decipiens Schmitz. — "Abundant on Gymnogongrus Torreyi, which fact 



may be interpreted as strengthening the idea that G. Torreyi is only a form of 



Ahnfeltia plicata."* 

 Slilophora rhizodes (Ehrh.) J. Ag. 

 Ulothrix flaccida (Dillw.) Thuret 

 TJlva Lactuca L. 

 U. Lactuca latissima (L.) DC. 



FUNGI 



SCHIZOMYCETES 



Bacillus amylovorus (Burr.) DeToni — On leaves of Pyrus communis. 



EUMYCETES 



Phycomycetes 

 Bremia Laclucae Regel — On Lactuca leaves. 

 Cystopus candidus (Pers.) Lev. — On Bursa Bursa-pasto/is and other mustards. 



* Some Midwinter Algae of Long Island Sound, by M. A. Howe in Torreya 14: 

 97-101. June, 1914 (Contr. N. Y. Botanical Garden No. 169). 



