684 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXV. 



Batkymetrical and geographical distribution of Californian Alcyo'naria. 







Geographical distribution. 





Depth. 



West coast of 

 America. 



West 

 Pacific 

 Ocean. 



Atlantic Ocean. 





Califor- 

 nia to 

 Panama. 



South 

 Amer- 

 ica. 



Coast 

 of the 

 United 



States. 



West 

 Indies. 



E astern 

 Atlantic 

 Ocean. 





Fathoms. 



1,675 



524 



1,075 



231-638 



29-1,100 



31-200? 



394-609 



1-52 



20-59 



44 



40-67 



30-140 



31-291 



243-1,083 



60-400 



135-638 



478-600 



26-524 



108-145 



500-734 



334-1.600 



500-565 



330 



995-1,573 



1-6 



120-1,012 



191 



28-423 



285-345 



285 



12-339 



447-448 



26-197 



(?) 



(?)-80 

 (?)-41 

 «(■') 

 60-74 













-\- 



























4- 

























4- 







































































4- 

















AcanthoptMum scalpelUforme 

















































4- 



+ ' 



+ 



























-f- 













"^Stachyptilum quadridentatum 



















4- 



4- 











+ 

 + 



























+ 

 -1- 















-h 













4- 

 + 

 4- 

 + 



























































+ 























































+ 















-1- 





4- 



4- 









































a Shallow water. ' 



[The asterisk (*) indicates a new species.] 



The most important fact brought out by the foregoing Hst is the 

 entire absence of forms known from the American coast north of 

 Cahfornia. Aside from this purely negative showing, the most strik- 

 ing feature of the hst is the remarkable diversity of the derivation of 

 this fauna, its relationships being almost exactly equal in respect to 

 the faunas of the Pacific coast south of Cahfornia, the Western 

 Pacific, the eastern coast of the United States, and the West Indies. 



Another interesting feature is that the relationship with the Atlantic 

 and Pacific faunas is almost exactly equal. 



The collection is hardly extensive enough to warrant any generah- 

 zations, and even if this were not so, this singular equivalence of 

 relationship would signify little beyond the wide distribution of tha 

 Alcyonaria in comparatively deep water. 



