EXPLANATION OF PLATE XVI 



FOSSIL FUCOIDS FROM POGIBSHI, NEAR KADIAK, ALASKA 

 Natural size 



FIGS, i and 2. Chondrites divaricatus Fischer-Ooster. Page 136. 



1 . A specimen having more delicate branches than usual . 



2. A specimen agreeing very nearly with the normal form of the 



species. 



3. Helminthoida subcrassa sp. nov. Page 142. 

 View of the specimen described. 



4. Helminthoida abnormis sp. nov. Page 143. 



The greater part of the specimen chiefly consulted in drawing 

 up the description of this species. It is somewhat weathered 

 and the nodular character of the cord is best shown on the 

 portion not included in the figure. 



5. Helminthoida exacta sp. nov. Page 142. 



One of the two specimens upon which this species is founded. 



