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259. Cleburne, W. Fossil Algae, Proc. Phil. Acad. 1857: 

 ii. (12Myl857.) 1858. 



Two specimens from Minnesota. 



260. Clendenin, Ida. Observations on the Zoospores of 

 Chaetophora endiviaefolia. Asa Gray Bull. No. 5. 13. 1894. 



261. Cleve, P. T. On Diatoms from the Arctic Sea. Bihang 

 Kongl. Svenska. Vet. Akad. Handl. 1: No. 13. J^pl. 1872-73. 



262. . Diatoms from the West Indian Archipelago. 



Bihang. Kongl. Svensk. Vet. Akad. Handl. 5: No. 8. 1880. 



263. . Farskvattens-Diatomaceer f ran Groenland och 



Argentinska Republiken. 1. Diatomaceer fran Groenland. 

 Oefvers. Kongl. Vet. Akad. Foerhandl. 38: No. 10. 3-7. 1881. 

 —(Bot. Centralb. 11:43. 1882.) 2. Diatomaceer fran Argen- 

 tinsk a Republiken. Oefvers. Kongl. Vet. Akad. Foerhandl. 

 38: No. 10. 7-13. 1881.— (Acad. Bol. Cordoba. 4: 191-197. 1882. 

 Buenos Ayres.) 



264. . On some New and little Known Diatoms. 



Bihang. Kongl. Svensk. Vet. Akad. Handl. 18: No. 5. 1882. 



Specimens collected from Brazil, Florida and California. 



265. . Diatoms collected during the expedition 



of the Vega. Vega-Expeditionens. Vet. Jakt. 3: 1883. Stock- 

 holm.— (Bot. Centralb. 18:132, 133. 1884.) 



Species from Point de Galli and Behring Sea. 



266. . On the diatoms collected during the Arctic 



expedition of Sir George Nares. Jour, Linn. Soc. 20:313-317. 

 (9Apl883.) 1884. 



267. . Note sur les Diatomees trouvees dans la pous 



siere glaciale de la cote orientale du Groenland. Le Diatom- 

 iste. 75. 1892. 



268. . Diatomees rares ou nouvelles. Le Diatomiste. 



75. 1892.— (Ann. Microgr. 351. 1893.)— (Am. Mo. Mic. Jour. 

 15:214,215. 7pZ. J11894.) 



Several forms from American localities. 



269. -_ — . Les Diatomees de I'Equateur. Le Diatomiste. 



2:99. 1 pi. 



One hundred and thirty-seven species and varieties with several new 

 from Ecuador. 



270. Cleve, P. T. and Grunow, A. Beitraege zur Kenntniss 

 der Arctischen Diatomeen. (1879.) Akad. Handl. 17: No, 2. 



1881. 



Gatherings made in Greenland. 



