472 DEEP-WATER EATJNA OF THE CLYDE SEA-AREA. 





Wide-spread 



Northern 



Southern 





Species. 



Species. 



Species. 





4 



5 





Mollusca 



30 



15 



2 



Brachiopoda 



1 









15 



12 



2 





3 



3 







10 



6 



1 



Totals 



63 



41 



5 



Here, curiously enough, the wide-spread forms preponderate 

 over the others more than was the case in the previous list ; but 

 it is noteworthy tliat the percentage of southern forms has 

 diminished, which, emphasizes still more strongly the Arctic and 

 Scandinavian affinities of the Clyde deep-water fauna. These 

 results illustrate in a very interesting manner several of the 

 generalizations of the late Edward Forbes. 



In conclusion, I may be allowed to express the hope that the 

 facts recorded above may furnish the nucleus of more extended 

 series of observations. I hope to continue the work as oppor- 

 tunities arise, and I shall be extremely grateful to any naturalists 

 wlio will furnish me with records of the occurrence, with the 

 exact locality and depth, of any species in the Clyde sea-area or 

 neighbouring seas. 



