THE MARINE ALG.E OF NEW ENGLAND. 113 



occurs at Charleston but is not known farther north, is also to be included in the 

 present genus, then the definition given above will have to be modified so as to include 

 plants having more than one row of cells, an extension of the genus apparently- 

 adopted by Thuret, but not originally adopted by Areschoug. 



E. ceramicola, (Lyngb.) Aresch. (Bangia ceramicola, Chauviu; 

 Phyc. Brit., PI. 317. — E. ceramicola, Le Jolis, Liste des Algues Marines 

 de Cherbourg, PI. 3, Figs. 1, 2.) 



Filaments diffuse, formiug a web or fringe on algre, cells about as long 

 as broad. 



On algse, especially the smaller Floridece, in tide-pools. Late summer 

 and autumn. 



Gloucester, Mass., Mrs. Davis, Mrs. Cochrane ; Peak's Island, Maine, 

 W. G. F.; Europe. 



In examining with the microscope the filamentous Floridece one often meets with a 

 few filaments of this species. It is not, however, common to find it in such abundance 

 on the shore as to attract the eye of the collector who is not especially in search of it. 

 It attains its full size in the month of September. 



? GOMOTRICHUM, Kiitz. 



(From yuvia, an angle, and Tpi%iov, a small hair.) 



Fronds filamentous, branching, composed of rose-colored, disk-shaped 

 cells, embedded in jelly. 



A genus composed of only two or three species. Kiitzing describes two species, but 

 his limitation of them is not now kept by algologists. Zanardini describes aud figures 

 a G. ccerulescens, which is not red in any sense. The systematic position of the genus 

 is very doubtful, and were it not for the color of the cells, G. elegans would probably 

 be placed in the Kostochinece. The only reproduction known consists in the escape of 

 the cells from the gelatinous sheath and a division into two new cells, then into four, 

 and so on until a new filament is formed. 



G. elegans, Zanard. (Bangia elegans, Chauv.; Phyc. Brit., PI. 246.) 



Filaments about .02 mm in diameter; cells cuboidal or ovate, about 



.009-10 mm in diameter. 



On Dasya elegans. 



Cotuit Port, Mass., Mrs. J. T. Lnslc ; Europe. 



A small and rare plant, growing in tufts scarcely a tenth of an inch high. We have 

 only one American specimen, collected by Mrs. Lusk, of Gloucester. The locality was 

 incorrectly given in the List of the Marine Algce of the United States, Proc. Am. 

 Acad., 1S75, the specimen not having been found by Mrs. Lusk at Gloucester, but at 

 Cotuit, Mass. 



Suborder SQUAMARIE^E. 



Fronds forming horizontally expanded crusts, usually membrana- 

 ceous, occasionally somewhat incrusted with lime, composed of closely 

 packed vertical filaments arising from a horizontal stratum of cells j 



fructification either in external protuberances composed of parallel fila- 

 S. Miss. 59 8 



