ME. ALDER 0~S THE ZOOPHYTES. 



17 



The numbers of the different classes obtained were :- 



Polyzoa 53 



Hydrozoa 57 



Actinozoa 10 



120 



Many of the best species met with are known to be northern 

 forms, but the published lists of species in these classes are so 

 incomplete that it would be very unsatisfactory to attempt a 

 numerical comparison. 



The flexible Zoophytes, from their perishable nature, are not 

 often preserved in a fossil state. The calcareous species indeed 

 occur, but generally mutilated and imperfect. Ten species only 

 of the 53 Polyzoa dredged are found fossil in the Crag. The 

 calcareous Actinozoa are abundant in a fossil state ; but none of 

 that division of the class are inhabitants of our coast. 



ZOOPHYTES. 





1862. 



1863. 



1864 







id 



Sr^" 



2 £ 



a 



3 « 



a 



Remakes. 





£) a 









^ C3 



,g 







































o a> 



n w 



K-° 



q 



25^ 



p 





Salicornaria farciminoides, 



















* 





* 



* 



* 



* 















* 





Rare. 





* 



* 



* 





* 



* 



Not uncommon. 



Menipea ternata, Ellis § Sol. 





* 



*• 











Scrupocellaria scruposa, Lin. 



* 







* 



* 



* 



Common. 



Delilii, And. . 









* 





* 



Rare. 



Hippothoa divaricata, Lainx. 











# 







Gemellaria loricata, Linn. . . 



* 







¥ 



* 



* 



Common in the 

 last dredging. 



Bugula flabellata, I. V. Thorn. 







* 





* 







avicularia, Pall 











& 



* 





Murrayana, Lean. . 



* 



* 





* 



* 



* 



Not uncommon . 



fastigiata, Fab 



* 



* 







* 



* 



Not uncommon. 





* 





* 





* 



* 





truncata, Linn 



* 









* 



* 



Common in the 

 last dredging, 



Carbasea papyrea, Pallas . . 



* 









* 







Membranipora pilosa, Pall. . 



* 





* 





-* 



* 





Flemingii, Busk. 



* 









* 



* 





rostrata,^4M. m.s. 

















(Flemingii, Tar. 























* 











