354 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



the whole series, and is also the one that was taken 

 through water that is most nearly the open Atlantic. 

 The catch is, as would naturally be expected, an 

 oceanic zoo-plankton. Comparatively few Diatoms are 

 represented, and only one of these, Rhizosolenia 

 shrubsolei, is regarded as neritic. The only neritic 

 animals, apart from a few larvae, are the univer- 

 sally present (" panthalassic ") Tintinnidae. Amongst 

 characteristically oceanic organisms we have Euchaeta 

 norvegica and Cwpulita sarsi. We add the full list as 

 a record of our deepest haul. 

 S.E. of Barra Head, Bernera. August 7th,i9i2. 145 fathoms. 



Calanus finmarchicus 3,000 



Pseudocalanus elongatus 1,300 



Euchaeta norvegica 1 



Acartia clausi 150 



Oithona siruilis 2,000 



Nauplii 10,000 



Decapod larvae 2 



Sagitta bipunctata 25 



Plutei 450 



Cupulita sarsi 1 



Medusoids 15 



Tintinnidae 800 



Peridinium spp 1,700 



Ceratium f usus 150 



Biddulphia regia 150 



Corethron criophilurn 150 



Coscinodiscus radiatus 450 



Rhizosolenia seniispina 41,600 



„ shrubsolei 92,500 



The nearest approach to this locality in our former 

 series of observations was the haul taken on July 14th, 

 1911, from 80 fathoms, at ten miles south of Castle Bay, 

 Barra, and that gave, as on the present occasion, a 

 coarse oceanic zoo-plankton. 



We have also in the present year a surface gathering 

 taken off Barra Head, Bernera, on the same occasion 

 (August 7th), which gave, however, only a small haul 

 in which both zoo- and phyto-plankton, both oceanic 

 and neritic forms, are represented. 



