DIATOMACEAE. 32% 
Cocconeis splendida, Greg. 
Two specimens in rock scrapings from Cobo. Perelle Bay, one. 
Cocconeis Grevillei, Sm. 
Occasional specimens have occurred in nearly all my shore 
gatherings. 
Cocconeis ornata, Greg. 
Cocconeis Morrisii, Sm. 
Cocconeis pinnata, Greg. 
Cocconeis nitida, Greg. 
A few valves in rock-gatherings from extreme low-water mark at 
Cobo, on the eastern side of the bay. 
Cocconeis transversalis, Greg. 
Cocconeis distans, Greg. 
Perelle Bay, one characteristic specimen. Cobo peat deposit, 
one imperfect valve. 
Cocconeis pseudo-marginata, Greg. 
Very sparingly in a gathering from the Pulias pool. 
Cocconeis punctatissima, Grev. 
Cocconeis excentrica, Donk. 
Three specimens in rock scrapings at Cobo. These agree exactly 
with Donkin’s description and figures, except that the median line is 
central, instead of being on one side. 
Cocconeis sparsa, Greg. 
Achnanthidium lanceolatum, Breb. 
Achnanthidium lineare, Sm. 
Achnanthidium coarctatum, Breb. 
Achnanthes exilis, Kutz. 
Achnanthes subsessilis, Kutz. 
Achnanthes brevipes, Ag. 
Abundant at Petit Bot Bay, and in tke brackish pool at Pulias. 
Achnanthes longipes, Ag. 
Salerie, plentiful on algae in rock-pools: also at Cobo. 
