SEA-FISHERIES LABORATORY. 149 
gravida, and T. nordenskidldi especially. Many Chaeto- 
ceras decipiens and a few Rhizosolenia. Few Ceratium. 
[ Neritic in type. | 
(4) Firth of Lorn, 108 fm.; July 22nd, 1910.— 
Mainly phyto-plankton. Diatoms chiefly _ neritic; 
especially Chaetoceras curvisetum and Thalassiosira; 
some Lhizosolenia and many Chaetoceras decipiens. 
Fair number of Ceratiwm. [Neritic in type. | 
(5) Firth of Lorn, 116 fm.; July 22nd, 1910.—Same 
as above. [Neritic in type. | 
VI. Iona Sounn, W. or Mutt 
(1) in Bull Hole, at anchor; July 2lst, 1907.— 
Phyto-plankton. Many Achnanthes taeniata and some 
Asterionella. Fair numbers of Rhizosolenia. [ ?Neritic 
in type. | 
(2) lona Sound, July 22nd, 1907.—Fair amount of 
zoo-plankton. Diatoms all Achnanthes taeniata. [Neritic 
in type. | 
VII. Nortru Enp or Sounp or MULL. 
(1) Off Ardmore, N. of Mull, 94 fm.; July 13th, 
1909.—Chiefly phyto-plankton. Diatoms mostly neritic; 
Chaetoceras curvisetum, Guinardia, and Lauderia. Also 
a few oceanic forms. <A fair number of Ceratiuwm. 
[Mainly neritic in type. | 
(2) Off Ardmore, 65 fm.; July 18th, 1910.—Chiefly 
phyto-plankton. Diatoms mainly neritic; large numbers 
of Chaetoceras curvisetum and Thalassiosira.  Oceanie 
diatoms scarcer, e.g., Mhizosolenia. Ceratium not 
common. [Neritic in type. | 
(3) Off Ardmore, 86 fm.; July 18th, 1910.—Same 
as above. 
