LIST OF THE PLATES. 



XV 



PLATE XV continued. 



Figs. 15-20. CL Venus (p. 137) 

 ;; 21-22. CL Dianie (p. 130) 

 23-27. CL Jennn-i (p. 134) 

 28-30. CL incurvuin (p. 136) 



PLATE XVI. 



Figs. 1-6. Clfifiteriinn ciiJ'i.-ij"iriiiii 



(p. 138) 



7-8. CL eboracense ( p. 140 ) 

 9-14. CL Leibleinii (p. 141) 

 ,, 15-16. CL inoiuliferum 

 (p. 142)' 



PLATE XVII. 



Figs. 14. Closteriuitt Ehrenben/ii 



(p. 143) 

 ,, 5-6. CL Malinvernianum 



(p. 145 ) 



7-8. CL decorum (p. 184) 

 9-11. CL Icuiceolatuni 

 (p. 149 ) 



PLATE XVIII. 



Figs. 1-6. Clotiff-rittni acerostnit 



(p. 146) 

 7. CL lanceolatum 



(p. 149) 

 8-12. CL Liniula (p. 150) 



PLATE XIX. 



Figs. 1-5. Closte'fiitni 



(p. 153) 



CL SiUqua (p. 154) 

 CL 



(p. 154) 



CL littorale (p. 155) 

 CL tuirtidinn (p. 156) 



6-8. 

 9-13. 



14. 

 15-18. 



PLATE XX. 



. 1-5. Closterium Cornu 



(P- 15?) 



Q-I2.CI. abruptum (p. 158) 

 13-14. 67. to./* (p. 160) 

 15-16. CL Balmacarense 



(p. 161) 



PLATE XX 



Figs. 17-18. CL Scnt;<;t,,i (\>. 161) 

 19- . CL pttsiUum (p. 162) 



PLATE XXI. 



Figs. 1-5. Closterium ^/YI '/// -//M// 



(p. 164) 



6-7. CL striyosum (p. 165) 

 8-16. CL gracile (p. 166) 



17. CL Lundellii (p. 169) 

 ,, 18-19. CL adculitre (p. 174) 



PLATE XXII. 



Figs. 1-3. Closterium attenuatum 



(p. 169) 



4-5. CL tunjidtnn Cp. 170) 

 6-14. CL Prltchardianum 

 (p. 172) 



PLATE XXIII. 



Figs. 1-3. Closterium pruiinut 



(p. 173) 



,, 4-5. CL acicnlare (p. 174) 

 6-8. a 7 . Centthiiit (p. 17i'.) 

 9-15. Cl. actitmn (p. 177) 

 16-19. CL fwbithituni (p. 179) 

 20-21. CLidiosjjorum (p.180) 



PLATE XXIV. 



Fi^s. 1-5. Closterium linentum 



(p. 181) 

 6-13. CL Ralfsii (p. 182) 



PLATE XXV. 



Figs. 1-3. Clofterium decorum 



(p. 184) 



4-5. CL laterole (p. 186) 

 6-13. CL Kutzinrjii (p. 186) 



PLATE XXVI. 



Figs. 1-8. Closterium rostratum 



(p. 188) 

 ,, 9-13. CL setaceum (p. 190) 



