44 J. H. PRICE, I. TITTLEY & W. D. RICHARDSON 



Hle-et-Vilaine 



Rotheneuf: 



Pointe de la Varde (Chemin, 1935), vii/viii,1934. Low water, on sandy bottoms between large 

 rocks, with Taonia atomaria. 



St Malo: 



St Malo, Strand, 12.vii.1929, L. D. Brongersma and G. Sanders, 937.155.85 (L); Hamel & 

 Lami (1930), common, vi-x, pools near Fort National, upper zone; Hamel (1939); Cardinal (1964), 

 6.viii.l963 and 24.ix.1963, J. Gaillard; De Brebisson, 910.161.585 (L). 



St Malo and La Ranee : 



Hamel (1928), pools in basins with muddy sand bottoms, in calm inlets, summer, at Fucus 

 spi rails /P. vesiculosus level. 



St Servan : 



viii.1873, Herb. Batters, probably juvenile, . 



Area of Dinar d-St Enogat: 



Grande Vide, before St Enogat: [a few km from the Laboratoire Maritime, Dinard]. Chalaud 

 (1946), vi to ix, sandy locations, near large pool bordering drainage dyke. 



St Enogat & St Suliac: Hamel & Lami (1930), hollows in median to upper zones. 



St Enogat: Lami (1931), despite cold summer (1931) with poor light, Padina was abundant 

 and well developed in hollows at upper level; Lami (1941), western end of couloir has a shallow 

 and well-lit pool, warming up enough for Padina, viii.1940; C. den Hartog, 26.vii.1954, no. 1995, 

 956.266.278 (L). 



Dinard: vi.1952, D. A. Hopwood (BM); 10.ix.1960, Pointe de Roche Pelee, J. Koster, no. 

 6926, 960.318.169 (L); Cardinal (1964), 6.viii.l963 and 24.ix.1963, J. Gaillard; Lestang-Laisne & 

 Quillet (1972), ix.1965, high level hollows. 



St Enogat plage, at Dinard, and Pointe du Decolle, at St Lunaire: Citharel & Villeret (1964), 

 upper pools and rocks, 18.vi.1961. 



Lefeuvre (1973) recognised three major coastal areas of Ille-et-Vilaine: (a) the Ranee estuary, 

 including Dinard to Rotheneuf, in which urban development (Dinard; St Servan; StMalo; 

 Parame; Rotheneuf) is the most important feature; (b) the median part, between Rotheneuf 

 harbour and Port-mer-Cancale, comprising about 7 km of rocky and sandy coast that has largely 

 escaped the extensive building of the western part; and (c) the eastern part, Baie de Mont-Saint- 

 Michel, biologically an exceptionally rich bay and estuary. 



There are reasonable numbers of Padina records, virtually all from the Dinard-Rotheneuf 

 area. All were from the months [vi to] vii to ix [to x]; most are of relatively, but not very, recent 

 origin (pre-1965). The later omission represents failure of observation, not absence. The concentra- 

 tion of records to the Dinard-Rotheneuf area is probably due to a balance of real differences in 

 physical environment and the existence of the Laboratoire Maritime in the St Servan/Dinard area 

 since soon after the First World War. The Pointe de la Varde, Rotheneuf, record of Padina 

 (Chemin, 1935) seems to be the furthest removed from the Laboratoire. Further west, the shores 

 are such that Padina is highly likely to appear, at least as ephemeral populations in favourable 

 locations. 



Cotes du Nord 



lie Brehat : 



Beauchamp & Lami (1921), well developed on the eastern side of a hollow, in the sandy parts 

 of small crevices. 



