PLATE V. 
Fig. 1. Navicuta macutosa, Donkin. 
2. NavicuLa Lavissima, Kiitzing. 
. NavicuLa DIRHYNcHUSs, Ehrenberg. 
3 
4, Navicuta Hircucocku, Ehrenberg. 
5. Navicuta pusia, Ehrenberg. 
6 
. Navicuta Iripis, Ehrenberg. 
~ 
. Navicuna Firma, Kiitzing. 
8. Navicuta arrinis, Ehrenberg. 
9, NavicuLa AMPHIRHYNCcHUS, Ehrenberg. 
10. NavicuLa sPH#RoPHORA, Kiitzing. 
lla &116. Navicuta ANGLICA, Ralfs. 
12, Navicuta punctata, Kiitzing. 
18. Navicuta AmpuisBzna, Bory de St. Vincent. 
14, Navicuna cryprocerHaLa, Kiitzing. 
