30 
. cymbifera, Greg. 
. excisa, Greg. | 
. levis, Greg, common near inlet. 
. levissima, Greg. 
. lanceolata, Cleve. J 
. naviculacea, Donkin, occasional, near inlet. 
. obtusa, Greg., common near inlet. 
A. plicata, Greg., abundant and pure, south side, foot of C street. 
A. proteus, Greg., common, foot of B street. 
A. robusta, Greg., common, near inlet, 
Bacillaria paradoxa, Gmelin, (Nitzschia paradoxa, Grun.), com- 
mon in ditches and pools west of railroad bridge. 
Berkleya fragilis, Grev., on eel-grass, south side of bay, August I. 
Biddulphia aurita, Breb., occasional on algze in bay. 
B. Baileyi, W. Smith, occasional near inlet and in river mud. 
B. levis, Ehr., occasional near inlet and on algze in bay. 
B. pulchella, Gray, occasional on alge in bay. 
B. rhombus, W. Sm., occasional near inlet and in mud. 
B. turgida, W. Sm., occasional near inlet and in mud. 
Campylodiscus cribrosus, W. Sm., occasional near inlet and in mud. 
Cocconeis excentrica, Donkin, abundant and pure, south side, 
near inlet, July. 
C. scutellum, Ehr., abundant on alge, particularly Ceramium, 
and on zoéphytes, especially Sertularia. 
Coscinodiscus eccentricus, Ehr. \ 
C. lineatus, Ehr. 
C. omphalanthus, Ehr. } occasional near inlet andin mud. 
C. radiatus, Ehr. | 
C. subtilis, Ehr. 
Dimeregramma marinum, Ralfs, occasional near inlet. 
Epithemia (Hantzschia) marina, Donkin, near inlet. 
£. musculus, Kiitz., common on algze, south side of bay. 
Grammatophora islandica, Ehr. ) 
G. marina, Kiitz. 
G. serpentina, Ehr. 
G. subtilissima, Bailey. 
Homeocladia sigmoidea, W. Sm. (Niteschia fi 
‘asciculata, Grunow), 
common in ditches near railroad bridge. ee 
Sasa d® A A A 
on small brown alge floating 
| in from sea. 
