1 68 CALIFORNIA ACADEMY OF SCIENCES. [Proc. 30 Ser. 



PLATE XXVII. 



PAGE 



Sphacelaria didichotoma, sp. nov. 15S 



Figs. I and 2 x 50 ; 3-6 x 450. 



PLATE XXVIII. 



Halorhipis winstonii (Ands.), gen. nov. 160 



Fig. I X I J^ ; 2 and 5 x 65 ; 3, 4 and 6 x 450. 



PLATE XXIX. 



Figs. 1-3. Coilodesmc califoruica (Ry}VK.) K]KV.v.y\. 160 



Fig. I nat. size ; 2 cross-section, 3 longitudinal 

 section x 450. 



Figs. 4-5. Soranihera iilvoidea Post. & Rupr. 165 



Fig. 4, a, d, and r nat. size ; 5 x 250. 



PLATE XXX. 



Figs. 1-3. PhyllHis fascia (Muell.) Kuetz. 161 



Figs. I and 2 nat. size \ 3 x 450. 

 Figs. 4,5. Homcostroma latifoliiim]. Kg. 159 



Fig. 4 nat. size ; 5 x 450. 

 P'igs. 6, 7. F.ndarachne bijtghamice ]. Ac. 162 



Fig. 6 nat. size ; 7 x 450. 



PLATE XXXI. 



Figs. 1-7. Scytosiphon bullosus, sp. nov. 163 



Figs. 1-6 one-half nat. size ; 7 x 450. 

 Figs. S-io. Scytosiphoti lovietitarius ({^ysGB.) ]. Kg. 163 



Figs. 8 and 9 three-fourths nat. size ; 10 x 450«, 



PLATE XXXI L 



Figs. 1-3. Colpomenia tiibercitlata, sp. nov. 164 



Figs. 4-6. Colpomenia siniiosa expansa, form. nov. 164 



Fig. 4 nat. size ; 5 x 65 ; 6 x 450. 

 Figs. 7, >S. Colpomenia sinuosa (Roth) Derb. & Soi.. ■ 164 



Fig. 7, a, b, c nat. size ; 8 x 450. 



