Plate 61 



In. i he 1. Evaslerias troschelii forma troschelii, Victoria, British Columbia, natural size; a giant 

 individual. This is an example of Verrill's variety rudis. The peculiarities are 

 largelj due to age. 



2. Evaslerias troschelii forma alveolata, Unalaska (No. 3391) natural size. A subforma 



showing the very unequal dorsal spines of forma troschelii and the reticulate arrange- 

 ment of ulri olata. 



3. Evasterias troschelii forma alveolata, Naha Hay, Alaska, X2. 



316 



