SEA-FISHERIES LABORATORY. 151 



stations, while Asterionella, Biddulphia, Coscinodiscus, 

 Lauderia, Nitzschia, Rhizosolenia, and Thalassiosira were 

 found near the Bahama Bank and at Morecambe Bay- 

 Ship, but in small numbers. 



In April the species are still more numerous, and the 

 numbers larger. In addition to the forms noted in the 

 tables, Biddulphia and Coscinodiscus were not uncommon 

 near Bahama Bank. 



May, on the whole, shows a still further increase, 

 though no diatoms were noted in Carnarvon Bay or Red 

 Wharf Bay. In addition to the results noted in the 

 tables, Lauderia was common in the south of Cardigan 

 Bay on the 21st, while Eucampia and Streptotheca were 

 not uncommon. Coscinodiscus was common in a haul on 

 the 14th, 25 miles W.N.W. from Piel Gas Buoy. 

 Diatoms were common at Station 14. 



June, as already noted, shows the maximum at 

 Stations 5-7, while diatoms are absent from Red Wharf 

 Bay and rare in Carnarvon Bay. Rhizosolenia occurs 

 at Nelson Buoy on the 12th, and was common 25 miles 

 W.N.W. from Piel Buoy on the 11th. Lauderia also was 

 not uncommon at the latter place. 



In July, diatoms were commoner at Stations 6 and 7 

 than at 5, especially Lauderia and Rhizosolenia. The 

 latter also occurred commonly at Nelson Buoy, and off 

 St. Bees Head at the end of the month, at which time 

 Rhizosolenia and Guinardia were common at Station 14. 

 Chaetoceras occurred at Stations 6 and 7, and in a lesser 

 degree at 5, and was also not uncommon at Nelson Buoy 

 and at Hydrographic Station 1. 



Rhizosolenia was probably not uncommon at Stations 

 5-7 in August, but there are no observations between 

 July 29th and September 9th. It was abundant in this 

 month in Red Wharf Bay, as was also C haetoceras , but 



