XIV 



LIST OF THE PLATES. 



5) 

 55 



PLATE CLIII. 



Figs. 1-4. Staurastrum aculca- 



tum (p. 160) 

 5. St. vest-Hum (p. 158) 

 6-7 S*. Archer ii (p. 155) 



PLATE CL1V. 



Figs. 1-4. Staurastrtim cond'o- 

 vcrxiun (p. 162) 



\ L ' 



5-7. St. cosmospinosum 



(p. 164) J 

 8-12. St. 'monticulosum (p. 



183) 

 ,, 13. St. megalonotum (p. 



182) 

 14-16. St. forjwidatum (p. 



187) 



PLATE CLV. 



Figs. 1-7. Staurastrum furcatum 



(p. 173) 



8, $.St. arcuatum (p. 180) 

 10. St. subavicula (p. 181) 

 11. St. ainphidoxon (p. 



181) 

 ., 12-14. St. Tohopekaligense 



(P- 



Figs. 



Figs. 



55 



PLATE CLVI. 



1 -2 . Staurastrum d ipla- 

 canthuin (p. 186) 

 3. St. senarium (p. 175) 

 4. St. West ii (p. 187) 

 5. St. gemeltiparum (p. 



176) 



6. &. Clevei (p. 177) 

 l-ll.St.furciyerum (p. 188) 



PLATE CLVII. 



1.- Staurastrum ftirci- 



1/cnun (p. 188) 

 2-4. St. sexangulare (}>. 



L94) 

 5. St. Arctiscon (p. 193) 



PLATE CLVIII. 

 Firs. 1-3. Cosmocladium con- 



o 



strictum (p. 198) 



4-7. C. prrisNtun (p. 200) 



8-10. C. pusillnm (p. 201) 



11-12. C. pidclclhnn (p. 200) 



13-16. C. Saxonicum (p. 202) 



PLATE CLIX. 



Figs. 1-8. Oocardium stratum 



(p. 204) 

 ,, 9-12. Spharozosm-a verte- 



bra-tain- (p. 209) 

 13-17. 8. Aubertianum (p. 

 207) 







PLATE CLX. 



Figs. 1-5 



55 

 55 

 55 



55 



J5 

 55 



55 



Figs. 



55 



55 



J5 



55 



-Sphcerozosma exca- 



vatum (]). 211) 

 6-8. S. granulatHin (p. 213) 

 9-II.S. Wallichii (p. 214) 

 12. S. vertebratum (p. 



209) 

 13-14. Onychonema jiliforme 



(p. 216) 



15-17. 0. Iceve (p. 218) 

 18-22 . Spondylosium pyy- 



mceum (p. 220) ' 

 23-25. S. plan am (p. 222) 



PLATE CLXI. 



1-5. Spondylosium pid- 



chellum (p. 227) 

 6-7. S. papillosum (p. 



223) 



8-11. S. secede ns (p. 225) 

 12-14. S. tetragon-urn (p. 



226) 



15. S. eHipliciDH (p. 222) 

 1 6-27 . Hyalotheca dissiliens 

 (p. 229) 



