PLATE 14 



Fig. 28. Diagram of plates of epitheca of Gonyaiilax polyedra Stein 

 in apical view, showing an extra anterior dorsal intercalary. San Diego, 

 California. July, 1904. X 1000. 



Fig. 29. Same of another and much larger individual, showing con- 

 tact of anterior intercalary ^" with the apical region (cl. pi.). San Diego, 

 California, July, 1904. X 1000. 



Fig. 30. Ventral view of theca of Gonyaulax kofoidi Pavillard, show- 

 ing parted apex, and surface markings. Seven miles WNW Point Loma, 

 California, November 12, 1904. X 1000. 



Fig. 31. Midventral region of theca of Gonyaulax polyedra Stein, 

 showing markings, pores, and plates of ventral area. San Diego, July, 

 1904. X 1000. 



Fig. 32. Apical view of epitheca of Gonyaulax (Steinidla) alaskensis 

 sp. nov., showing plates. Loring, Alaska, September 15, 1904. X 1000. 



ABBREVIATIONS 



l'~4' — apical series of plates. g. s. — girdle suture. 



1<>-S" — intercalary plates. int. pis. — intermediate plates of 



l"-6" — precingular series. ventral area. 



ant. pi. — anterior plate of ventral post. pi. — posterior plate of same. 



area. v. po. — ventral pore. 



cl. pi. — closing platelet of apex. x. — extra anterior intercalary plate. 

 fl. po. — flagellar pore. 



Figures 28, 29, and 31 drawn by Mr. B. D. Billinghurst; figures 30 and 

 32 by Mrs. Josephine Rigden Michener. 



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