PLATE XCIV. 



FIGS. PAGE 



1. Cosmarium ovale Ralfs. x 500. [Consult PL 



XCII, fig. 1, and PL XCIII, fig. 1.] . 267 



2. C. isthmium West. A form, x 500. [Consult 



PL LXXVII, figs. 7-11.] 145 



3. C. excavatum Nordst. forma duplo-major Lund. 



x 500. [Consult PL LXXVII, fig. 12.] . 148 

 4-5. C. protractum (Nag.) De Bary. x 500. [Con- 

 sult PL LXXXII, fig. 8.] . . 181 

 6. C. latifrons Lund. x 400 (after Lundell). 



Description in the next volume. 

 7. C. cylindricum Ralfs. a and b, x 400 (after 



Ralfs) ; a, x 400. Description in the next 



volume. 

 8. C. subcylindricum West, x 520. Description 



in the next volume. 

 9. C. promontorium West & Gr. S. West, x 520. 



Description in the next volume. 

 10. C. lepidum West, x 400. Description in the 



next volume. 

 11. C. ovale Ralfs var. subglcibrum. West & Gr. S. 



West, x 520. 269 



