PLANTS OF RHODE ISLAND. 117 



BACILLARIA, Gmel. 



1. paradoxa, Gmelin. Newport and Rocky Point, S.^. .Br if/^s. 



2. cursoria, Dorkin. Newport, S. A. Briggs. 



SYNEDRA, Ehrb. 



1. lunaris, Ehrb. Providence. 



2. pulchella, Kutz. Providence. 



3. gracilis, Kutz. Mark Rock, jS. A. Briggs. 



4. undulata, Bailey, Newport, S. A. Briggs. 



5. Ulna, Ehrb. Common. No. 177. 



6. splendens, Kutz. Providence. 



7. Gallioni, Ehrb. Rocky Point, S. A. Briggs. 



8. tabulata, Kutz. Newport, S. A. Briggs. 



9. fulgens, W. S. Newport, S. A. Briggs. 

 10. crystallina, Kutz. Rocky Point, Newport, Briggs. 



CYMATOPLEURA, Smith. 



1. solea, Breb. Providence. 



2. elliptica, Breb. Providence. 



SURIRELLA, (Turp.) 



1. biseriata, Breb. Common. No. 178. 



2. splendens, Kutz. Providence. 



CAMPYLODISCUS, Ehrb. 

 simulans, Greg. Newport, S. A. Briggs. 



STRIATELLA, Ag. 

 unipunctata, Ag. Newport, S. A. Briggs. 



RHABDONEMA, Kutz. 



1. arcuatum, Kutz. Newport, S. A. Briggs. 



2. Adriaticum, Kutz. Newport, S. A. Briggs. 



TABELLARIA,* Ehrb. 



1. flocculosa, Roth. Rocky Point, *'. A. Briggs ; Quidnesset. 



No. 179. 



2. fenestrata, Lyngb. Common. 



GRAMMATOPHORA, Ehrb. 



1. marina, Kutz. Newport, S. A. Briggs. 



2. islandica, Grev. Rocky Point, .S. ^1. Brig^^s; Providence, «&c. 



PODOSIRA, Ehrb. 

 hormoides, Kutz. Newport, S. A. Briggs. 



* T. Thwaitesii, Olney, n. sp. allied to T. flocculosa, Providence," Alg. Rhod. 

 No. 180, is not known by any drawing or description. 



