380 PROCEEDINGS OF THE AMERICAN ACADEMY 



412. Ch.etomorpha brachtgona, Ilarv. Key West. 



413. Cn^TOMORPHA TORTUOSA, Dillw. Nuhaiit, Mass., north- 

 ward. Common. 



414. HoRMOTRiCHUM YouNGANDM, Dillvv. Nbw York. 



415. HoRMOTRiCHUJi Carmich^lii, Harv. Boston, Mr. Calverly. 



416. Lyngbya majuscula, Harv. Wood's Hole, Mass., and 

 southward. 



417. Lyngbya ferruginea, Ag. New York; Greenport, L.T. 



418. Lyngbya fulva, Harv. Stouiugton, Conn. 



419. Lyngbya niguescens, Harv. Peconic Bay, LI. 



420. Lyngbya confervoides, Ag. Charleston, S.C. 



421. Lyngbya pusilla, Harv. Sullivan's Island, S.C. 



422. Lyngbya hyalina, Harv. Key West. 



423. Calothrix confervicola, Ag. Everywhere. 



424. Calothkix scopulorum, Ag. Everywhere. 



425. Calothrix vivipara, Harv. Seaconnet Point, R.I. 



426. Calothrix pilosa, Harv. Key West. 



427. Calotiirix dura, Harv. Key West. 



428. MiCROCOLEUS CORYMBOSUS, Harv. Key West. 



*429. SpiiiEROZYGA Carmich^lii, Harv. Noank, Conn. ; Europe. 

 *430. RivULARiA ATRA, Roth. New England. Common on rocks 

 and shells. Europe. 



