214 THE AMERICAN MONTHLY [July, 



Some New or Little Known Diatoms. 



By M. P.-T. CIvBVE. 

 From Le Diatomiste. 

 SEE FRONTISPIECE. 



[For the purpose of calling attention to the excellent work being done upon 

 diatoms in Paris by onr friend Tempera we abstract sufficient matter from M. 

 Cleve's article to explain the plate and hope everyone who reads French will 

 take that periodical. No diatomist can do without it. — Editor.] 



1. Navicula gamma, n. sp. From fresh water in Gua- 

 temala, fossil. 



2. Same, var. rectilineata. Brackish water at Cama- 

 roon, Africa (rare). 



3. Navicula epsilon, n. sp. Marine. China and Japan. 



4. Navicula alpha, n. sp. Marine. Japan. 



5. Navicula eta, n. sp. Marine. Japan, Red iSea. 



6. Navicula mceandrina, n. sp. Fresh water. Oregon. 

 Fossil. 



7. Navicula delawarensis. Brackish water Conn., 

 mouth of the Delaware. 



8. Enlarged view of same. 



9. Navicula demerara. Fresh water. Demerara river, 

 Surinam. 



10. Navicula delta, n. sp. Marine. Ceylon. 



11. Navicula tau, n. sp. Fresh water. Demerara river. 



12. Navicula limicola, n. sp. Brackish water. Cama- 

 roon, Africa. 



13. Navicula pi, n. sp. Marine. China. 



14. Navicula grovel, n. sp. Marine. Oamaru, N. Z. 



15. Mastogloia rimosa, n. sp. Marine. Bahama Is- 

 lands. 



16. Mastogloia obesa. Marine. Japan. 



17. Mastogloia bahamensis, n. sp. Bahama Islands. 



18. Mastogloia cuspidata, n, sp. Marine. Bahama 

 Island. 



19. Mastogloia antiqua, n. sp. Fossil. Karand, Hun- 

 gary. 



