312 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 17 



PLATE 2 



Figs. 11-1+. Cryptoncinia aiujiistata ( Setch. & Gard.) Dawson. Figs. 

 11-12. Auxiliary cell systems from D. 6841, Bahia de 

 San Lucas, Baja Calif. Fig. 13. A carpogonial branch 

 system from the same. Fig. 14. A nearly mature gonimo- 

 blast from the same. 



Fig. 15. Cryptoncmia Jccolorata Taylor. Part of an oblique 



longitudinal section through the tetrasporangial type 



specimen, Taylor 39-656, Lsia Maria Magdalena, 

 Nayarit. 



Figs. 16-18. Polyopes hushiae Farlow. Fig. 16. A carpogonial branch 

 system from D. 5628, Santa Catalina Island, Calif. Fig. 



17. A fertilized auxiliary cell system of the same show- 

 ing the cutting off of the primary gonimoblast cell. Fig. 



18. Transection of part of a young tetrasporangial nem- 

 athecium of the same. 



Figs. 19-21. Halymenia bifida Dawson. Fig. 19. A carpogonial 

 branch system from the type, D. 6745, Punta Frailes, 

 Baja Calif. Fig. 20. An auxiliary cell system from the 

 t\pe. Fig. 21. A mature gonimoblast from the t\ pe. 



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