PLATE XLIII. 
5O MicRrows 

Page 
Fig. 414. Oedogonium hystricinum Transeau and Tiffany............ Sk MR 120 
Fig. 415. Oe. armigerum Hirn. (Redrawn from Hirn)....................... ise. 
Fig. 416. Oe. aster Wittr. (Redrawn from Hirn)........ I 120 
Fig. 417. Oe. hystrix Wittr. (After Wittrock)................ es a 4 EP 120 
Rig: 418; Oex hystrix-y- eanadense Tiffany: =: . 2... <5. seen ee eee 121 
Fig. 419. Oc. hystrix v. subglobosum Wittr. (After Wittrock)............... 121 
Biss. 420 and 421. Ge. echinospermum:Al. Br. :.. 5... Jo scene eee ce es es 121 
Fig. 422. Oce..echinospermum v. horridum Hirn. (After Wolle).............. 122 
