LIST OF THE PLATES. 



Xlll 



PLATE CXLIII continued. 



Figs. 9-13. St. crenulatum (p. 1 10) 

 ,, 14-16. St. proboscidiioit (p. 



129) 



17. St. bicorne (p. 117) 

 ,, 18-22. St. oxyacantham (p. 



169) 

 23. St. eboracense (p. 137) 



Figs. 



,, 



PLATE CXLIV. 



1-2. Staurastrum stib- 



gracillimum (p. 118) 

 3-13. St. gracile (p. 96) 



PLATE CXLV. 



Figs. 1-10. Staurastrum 



doxutti (p. 101) 



,, 11-12. St. pseudopelagictim 

 (p. 107) 



PLATE CXLVI. 



Figs. 1-3. Staurastrum para- 



doxwn (p. 

 ,, 4. St. dubiuni (p. 



5. St. boreale (p. 112) 

 6. St. pelagicum (p. 124) 

 7-8. St. anatinum (p. 142) 



PLATE CXLVII. 



Figs. 1-6. Staurastrum ana- 



I in ton (p. 142) 

 ,, 7. St. natator (p. 149) 



PLATE CXLV1II. 



Figs. 1. Staurastrum Dun- 



cense (p. 116) 



'2-3. St. Manfeldtii (p. 114) 

 ,, 4. St. dorsidentiferum 



(p. 171) 

 b-7.St. Sebaldi (p. 166) 



5J 



55 



Figs. 



55 

 JJ 



55 



J5 



5) 



Figs. 



Figs. 



55 

 55 



Figs. 



PLATE CXLIX. 



1 . Staurastr uin iotan ton. 



(p. 121) 



2-5. St. tetracerwm (p. 118) 

 6. St. micron (p. 123) 

 7. St. irregular e (p. 150) 

 8. St. latiusculum (p. 



124) 



9-10. St.cyrtocerum (p. 135) 

 1 1 . St. pseudotetracerum 



(p. 122) 



12. St. Chavesii (p. 134) 

 13. St. Pseudosebaldi (p. 



113) 

 14-16. St. Heimerlianum 



(p. 165) 

 11. St. Sebaldi (p. 166) 



PLATE CL. 



1-3. Staurastrum Arachne 



(p. 151) 



4. St. cyrtocerton (p. 135) 

 5-13. St. margaritaceum (p. 



131) 

 14-15. -St. sexcostatnnt (p. 



147) 

 16. SZ. Cerastes (p. 141) 



PLATE CLI. 



1 . Staurastrum Cerastes 



(p. 141) 



2-5. St. elongatum (p. 156) 

 6. St. barbaricum (p. 157) 

 7-8. St. verticillatum (p. 



155) 

 9-11. St. vestituiH (p. 158) 



PLATE CLII. 



1 -4 . Staurastrum Oph i u ra 



(p. 153) 

 5-8. St. vestitum (p. 158) 



