THE MOUNT DESERT REGION 



83. 



attempt has been made to give a complete synonymy, although 

 reference has been included under each species to the fullest 

 descriptions and best illustrations. Wherever possible refer- 

 ence is made to Lundbeck, who always includes a complete 

 synonymy and whose descriptions and figures are excellent. 



The depths given in this work are in Danish fathoms (1 Dan- 

 ish fathom =^ 1.06 English fathoms). 



With respect to the size of spicules, an attempt has been 

 made to give an idea of the characteristic size and shape, with 

 the result that immature forms and extremes are excluded. 

 The young forms of the microscleres may cause some confu- 

 sion to the inexperienced worker, but Lundbeck has usually 



