310 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 17 



PLATE 1 



Fig. 1. Grateloiipia maxima (Gardner) Kylin. Vertical section 



through a mature cystocarp of a topotype specimen, 

 Ciardner 2818, Fort Point, San Francisco, Calif. 



Fig. 2. Cratcloupia lioivci Setch. & Oard. Portion of a tran- 

 section of an antheridial plant of D. 1835, vicinity of 

 Guaymas, Sonora. 



Figs. 3-6. Grateloiipia schizophylla Kiitz. Fig. 3. A carpogonial 

 branch svstem from l^oty 4987, Cape Arago, Oregon. Fig. 

 4. An auxiliar\ cell system of the same. Fig. 5. Part of a 

 transection of a tetrasporic blade of Cooper 475, \'entura, 

 Calif. Fig. 6. Vertical section through a mature c\stocarp 

 in D. 1529, Bahia Ositos, Baja Calif. 



Figs. 7-8. Grateloupia hamockii Dawson. Fig. 7. An unfertilized 

 auxiliary cell system from D. 1765, Bahia Bocochibampo, 

 Sonora. Fig. 8. A young gonimoblast from the same. 



Figs. 9-10. Cryptonrmia oho-vata J. Agardh. Fig. 9. X'ertical section 

 through a cystocarp from the Berggren type specimen 

 from San Francisco, Calif. Fig. 10. Part of an oblique 

 section of a tetrasporangial plant from P.B.A. no. 5 50, 

 La Jolla, Calif. Note the section of a filament filled with 

 highly refractive contents. 



