Notes on the Biology of some Lamellibranchs in the Clyde Area

Abstract

The paper deals with four species from the Clyde Area, namely: Tellina tenuis, Tellina fabula, Abra alba, and Cardium edule.T. Tenuis.1. The growth at one station below L.W.M. in Kames Bay is considered. This is slower than in any other part of its vertical range.2. Heavy spat-falls were recorded in 1926 and in 1930, but, in both cases, the spat grew slowly and died off quickly at the stations below L.W.M.3. The general rate of growth for the species from its upper to its lower limit of distribution in Kames Bay is tabulated.