692 



Proceedings of the Royal Irish Academy. 



Table I. 



Monthly Distribution of certain Pelagic Animals 





1896. 





1896 





1896-1897. 





1897. 





Summer. 



Autumn. 



Winter. 



Spring. 





fcb 



< 





o 



> 



o 



6 







1 



< 





Muggisea atlantica, .... 



X 



X 



X 



X 



X 









X 





Cupulita sarsii. 









X 



X 



X 



X 



X 







X 



X 



X 



Velella spirans. 



















1 . . 









.. .. 



Bolina norvegica. 









X 



X 



X 















.. ! X 



Pleurobracbia pileus, 









X 



X 



X 



X 



X 





X 



X 



X 



X 



X 



Beroe ovata, . 











X 



X 





X 





X 



X 







X 



Tomopteris onisciformis, 









X 



X 



X 



X 



X 



X 



X 



X 



X 







Sagitta bipunctata, . 









X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



X 



Paratbemisto obHvia, 











X 





X 



X 















Clione limacina, 









X 



X 



X 



X 

















Limacina retroversa. 









X 



X 



X 



X 

















Thalia democratica-niucronata, 







X 



X 



















Doliohmi tritonis (so. ?), 





X 



X 



X 



X 

















Oikopleura flabellum (sp. ?), 





X 



X 



X 



X 







X 



X 



X 



X 



X 



Table II), 

 Table shoicing ^he Alonths in ichich Pelagic Animali 





1896. 

 Summer. 



1896. 

 Autumn. 



1896-1897. 

 Winter. 



1897. ' 

 Spring. 



1-5 



< 



so 



o 



> 



O 



d 



Q 



c 







u 



< 



1 



Corymorpha nutans, 



Sarsia prolifera, .... 



Dipleurosoma typicum, 



Eucbilota pilosella, .... 



Laodice calcarata, .... 



Obelia nigra, .... 



Phialidium cymbaloideum, 



Phialidium temporarium, 



Solmaris corona, .... 



Pelagia perla, .... 



Cupulita sarsii, .... 



Pleurobrachia pileus, 



Bolina norvegica, .... 



Beroe ovata, ..... 



Tomopteris onisciformis, 



Sagitta bipunctata, .... 



Limacina retroversa, 



Thalia democratica-mucronata, 



Oikopleuja flabellum (sp. ?), . 



X 

 X 



X 



X 

 X 



X 



X 

 X 

 X 



X 



X 



X 

 X 



X 

 X 



X 

 X 



X 

 X 









X 





X 



X 

 X 



X 

 X 



























