j r o FRIEDRICH HUSTEDT. 



2 2. A^. didelta nov. spec. 



23. A^. rechmi nov. spec. 



24. A\ puiictulatmn nov. spec. 



25. 26. Amphora geniculata nov. spec. 

 27. Stmtroneis laticeps nov. spec. 



28. — 30. Fj^agilaria asiatica nov. spec. 



31. Gomphojtema parvultim var. subelliptica Cl. 



32. 33 Naviciila hungarica var. linearis Oestr. 

 34- öS- Goviphoiiema Hedini nov. spec. 



36. Navicula Hedini nov. spec. 

 '^'j . N. viridula var. pamirensis nov. var. 

 38. 39. Amphora Ostenfeldi nov. spec. 

 40. 41. Aavic7ila subrhombica nov. spec. 



Tafel X. 



42. Haiitzschia aviphioxys var. rompaeia nov. \'ar. 



43. 44. Nitzschia pscndolinearis nov. spec. 



45. N'. Kittlii Grün. 



46. 47. A\ snbviirea nov. spec. 



48.^ — 50. N. b a ciliar iceformis nov. spec. 

 51 (-'V—!). 52. A''. bacillum nov. spec, 

 53. — 55. A^. tibetana nov. spec. 



56. N. frustulum var. asiatica nov. var. 



57. A^. regiila nov, spec. 



58. 59. N. 6W**»/i?ÄÄ» nov. spec. yUt'C^t^&vc«^ 

 60, 61. A^. iicgiformis nov, spec. 



62. — 64. A^. bacilliforvtis nov. spec. 

 65. 66. A^. gradifera nov. spec. 

 67. Cymbella tibetana nov. spec. 



