10 



DICTYOSIPHONACEAE. 



DICTYOSIPHON Grev. 



D. foeniculaceus (Huds. ) Grev. 



Not infrequent along the whole coast. 



D. hippuroides i Lyngb. ) Aresch. 



Kings : College Point, Jamaica Bay, Pike. 



MYRIOTRICHIACEAE. 



MYRIOTRICHIA Harv. 

 M. clavaeformis Harv. 



Suffolk : Greenport, Orient, Montauk, Pike. 

 M. radicans (Dillw. ) Harv. 



Kings : College Point, Pike. 



ELACHISTACEAE. 

 ELACHISTA Duby. 



E. fucicola ( Velley) Fries. 

 Frequent, though local. 



CHORD ARIACEAE . 

 MYRIONEMA Grev. 

 M. vulgare Thur. 



Not infrequent along the whole coast. 



CASTAGNEA (Derb. and Sol.) Thur. 

 C. virescens (Carm. ) Thur. 



Queens: Whitestone. Suffolk; Orient, Pike. 

 C. Zostereae (Mohr) Thur. 



Queens: Whitestone. Suffolk: Orient, Pike. 



MYRIACTIS Kiitz. 

 M. pulvinata Kiitz. 



Suffolk: Greenport, Southampton, Orient, Pike. 



LEATHESIA S. F. Cray. 

 L. difformis (L. ) Aresch. 



Not infrequent throughout. 



MESOGLOIA Air. 



M. divaricata ( Ag. ) Kutz. 



Not infrequent in bays along the south shore. 



CHORDARIA Ag. 



C. flagelliformis (Fl. Dan.) Ag. 

 Suffolk: Pike. 



STILOPHORACEAE. 

 STILOPHORA Ag. 



S. rhizoides Ag. 



Not infrequent in the Sound. 



