186 ALLAN HAXCOCK PACIFIC EXPEDITIONS VOL. 17 



PLATE 7 



Fig. 1. jreeksia templftonii Setchell & Gardner. Transection 



of a cystocarpic blade of D. 5804, Santa Cruz Island, 

 California, showing curved carpogonial branches. 



Figs. 2-3. Cruorit'lla dubyi (Crouan & Crouan) Schmitz. Fig. 2. 

 \'ertical section through a tetrasporangial portion of 

 D. 2951, Miller's Landing, Baja Calif. Fig. 3. Portion 

 of hypothallus of D. 2895, Punta Santa Rosalia, Baja 

 Calif., as seen from below, showing characteristic fan- 

 shaped anastomosing cell-groups. 



Fig. 4. Hildcnlirandia prototypus Nardo var. prototypus. Verti- 



cal section through a tetrasporangial crust of D. 8730, 

 San Quintin Peninsula, Baja Calif., showing irregular- 

 ly divided sporangia. 



Fig. 5. Cruoriella niatjdalfnar Dawson. Vertical section 



through a tetrasporangial portion of the type, D. 9363c, 

 Isla Magdalena, Baja Calif. 



Fig. 6. Cruoriella fissiirata Dawson. A'ertical section through 



an antheridial portion of D. 3849a, Acapulco, (nierr. 



Fig. 7. Haciiiatocelis rubens J. Ag. ^"ertical section through a 



tetrasporangial portion of D. 287, Punta Descanso, 

 Baja Calif. 



Figs. 8-9. Gloiopeltis ininiita Kylin, Fig. 8. Part of a tetra- 

 sporangial plant from the type locality. X 4.5. Fig. 9. 

 Part of a cystocarpic plant of D. 9427, Islas San 

 Benito. X 4.5. 



