314 ALLAX HANCOCK PACIFIC EXPEDITIONS VOL. 17 



PLATE 3 



Figs. 22-25. Halymcnia abyssifola Dawson. All figures from the type 

 specimen, D. 433, Isla Partida, Baja Calif. Fig. 22. One 

 of three carpogonial branch systems detected, as seen in 

 median optical view. Note the small size compared \\\xh 

 the auxiliary ceil system. Fig. 23. An auxiliary cell 

 system. Fig. 24. Part of the outermost cortex as seen in 

 surface view to show size and arrangement of the cells. 

 Fig. 25. Portion of a transection of the type to show the 

 thick surface jelly and the perpendicular medullary cells. 



Figs. 26-28. Halyitunia megaspora Daw son. Fig. 26. Habit of a 

 specimen of the type collection, D. 6740, Punta Frailes, 

 Baja Calif. X 1. Fig. 27. Transectional view in the 

 vicinity of a cystocarp of D. 6905, Canal de San 

 Lorenzo, Baja Calif., showing somewhat more irregular 

 medullar^ filaments than in sterile parts. Fig. 28. 

 Maturing gonimoblast in a paratype specimen of D. 

 6905. 



