184 THE FAUNA OF THE SALCOMP.E ESTUARY. 



east end of Salcombe Harbour 42 per cent. ; in those from between 

 Ferry House and Millbay 13 per cent, on the sand, 16o per cent, on 

 the mud ; and in that from Millbay sand 16 per cent. 



NoNlONiNA DEPRESSULA (Walker and Jacob). The most abundant 

 species in the samples from the Ferry House to Millbay, where it 

 formed 26 and 29 per cent, of the specimens counted from the sand, 

 19 per cent, of those from the mud. It was less common in the sample 

 from north-east end of Salcombe Harbour (4 per cent.). It was not 

 found in the first sample from the shore at Salstone, but a few 

 specimens were seen in a later one taken at the same place. In the 

 sample of mud dredged from the channel to the west of the Salstone 

 this species formed 29 per cent, of the foraminifera counted. 



NoNiONiNA STELLIGERA, d'Ovbigny. A few from the sample of muddy 

 sand taken between Ferry House and Millbay. 



PoLYSTOMELLA CRISPA {Linn.). One of the foraminifera most frequently 

 met with in the Salcombe estuary. It was present in numbers in all 

 the samples examined, and formed a considerable percentage of the 

 whole number of specimens in all cases in which they were counted. 

 The figures are: Salstone, 18 per cent; channel west of Salstone, 

 18 per cent. ; north-east of Salcombe Harbour, 28 per cent. ; sand 

 between Ferry House and Millbay, 18 per cent. ; mud near the Ferry 

 House, 18 per cent. ; sand from Millbay, 6 5 per cent. 



PoLYSTOMELLA STRIATO-PUNCTATA (Fichtel and Moll). This was found 

 in both the samples from between the Ferry House and Millbay, and in 

 that from the channel west of the Salstone. The specimens from the 

 latter sample make it very doubtful whether the specific difference 

 between Polystomella crispa and Polystomella striato-pundata can be 

 maintained. Every variety occurs from the typical P. crispa, with well 

 developed markings, hyaline test and carinate margin, to equally typical 

 specimens of P. striato-punctata, with short and almost insignificant 

 markings, semi-porcellanous test, and margin well rounded. At least 

 twenty intermediate forms were obtained from a small sample. 



PORIFERA. 



[Nomenclature: R. Hanitsch, "Revision of Generic Nomenclature and Classification in 

 Bowerbank's British Spongiadse," Trans. Liverpool Biol. Soc. vol. viii. 1894.] 



Sycon compressum, Auctt. On the rocks at mouth of Salcombe 

 Harbour. 



Sycon coronatum, Mlis and Solander. Dredged in Salcombe 

 Harbour. 



Halichondria panicea, Pallas. On the rocks at mouth of Salcombe 

 Harbour. 



