610 GEOLOGICAL SURVEY OF NEW JERSEY. 
O. littoralis, Carm. 
Marine. In salt-water marshes; frequent—Wolle. 
QO. princeps, Vauch. 
Fresh water. Cape May: On pools, Dennisville. 
©. imperator, Wood. 
Fresh water. Frequent in ponds and pools. 
BEGGIATOA, Trevisan. 
B. alba, Trev., var. marina, Warming. 
Marine. Atlantic: On leaves and stems of Spartina in 
brackish ditches—Martindale. 
B. arachnoidea, Rab. 
With the former—Martindale. 
LEPTOTHRIX, Kutz. 
L. eruginea (Kiitz.), Kirch. 
Fresh water. In ponds; frequent. 
L. rigidula, Kiitz. 
Marine. Atlantic: On alge, Atlantic City—Martindale. 
L. ochracea, Kitz. 
Fresh water. In ditches and small pools; frequent. 
SPIRULINA, Turpin. 
S. tenuissima, Kiitz. 
Marine. Atlantic: Atlantic City, mixed with other minute 
forms—Martindale. Monmouth: Swimming River—Britton. 
CHROOCOCCACEZ. 
GL@OTHECH, Neg. 
G. confluens, Neg. 
Terrestrial. On wet rocks. 
APHANOTHECHR, Neg. 
A. prasina, Neg. 
Fresh water. Occasional ; floating on ponds. 
