CONTENTS. 



NUMBER I. DECEMBER, 1905. 



I. G. E. MARION: Mandibular and pharyngeal muscles 

 of Acanthias and Ruia. (American Naturalist, 39, 

 pp. 891-920, 1905.) 15 text figures . . i 



NUMBER II. MAY, 1906. 



II. F. W. THYNG : The squamosal bone in tetrapodous 

 Vertebrata. ( Proceedings of the Boston Society of 

 Natural History, 32, pp. 387-425.) 3 plates, one table, 

 and 20 text figures ....... 35 



NUMBER III. JULY, 1909. 



III. F. S. COLLINS : The Green Algae of North America. 



1 8 plates . . . . . ... . -79 



