THE FAUNA OF THE EXE ESTUARY. 321 



Nerine cirratulus {Delk Chiajc). Specimens were found on I^ull- 

 hill Bank and Cocklesand. 



ScOLOPLOS armiger, 0. F. MnUcr, was not uncommon in sand on all 

 the banks in tlie upper part of the estuary, but was not found on tlie 

 Polesands. 



Aricia Latreillii, Andouin d Edwards, was moderately plentiful in 

 the hard sand on the south of the Polesands. The specimens were here 

 very large. One small specimen, probably belonging to the same species, 

 was found in the sand between Starcross and Cockwood (sta. 8). 



Arenicola marina, Lmn., was very abundant in all the sand and 

 gravel in the estuary itself, but only one specimen is recorded from the 

 Polesands. One only was obtained from the mud at Greenlands 

 (sta. 1). The species was most abundant in the fine clean sand, be- 

 coming less plentiful in coarse ground. It was noticed that in ground 

 where Arenicola became less plentiful the Terebellid Lanice concMlcga 

 became more abundant, and vice vcrsd. 



No other species of Arenicola was found. 



Clymenids, probably belonging to two species of the genus Fraxilla, 

 were found in the sand west of Salthouse Lake (sta. 10). One small 

 one was taken in the sand between Starcross and Cockwood (sta, 8). 



Ophelia bicornis, Savigny (vide de St.-Joseph, Ann. Sci. Nat., v., 

 1898, p. 380). The sand on the north-eastern side of the Polesands, 

 that is, the side nearest to the main channel of the estuary, is some- 

 what coarse and loose. The only animal found living in it was Ophelia 

 bicornis, but this worm was present in great numbers. It was only 

 necessary to dig into the sand with the hand, when one or two 

 specimens would be exposed. It was also found in moderate numbers 

 in sand of a somewhat similar nature on the highest part of P)ullhill 

 Bank, that is, the portion first uncovered on the fall of the tide. Single 

 specimens of the species were met with on the north side of the 

 Warren (sta. 12), in the sand below Lympstone mussel beds (sta. 6), and 

 in the Cocklesand (sta. 13). 



PoLYMNiA nebulosa, Montagu. A few specimens from the dock, 

 and from dredging material from the sponge ground below the pier 

 (sta. 14b). 



Lanice conchilega {Pallc(s) was very common on the banks in the 

 estuary, where there was a large proportion of gravel mixed with clean 

 sand. It was particularly abundant on the north side of the Warren 

 (sta. 12), between Cockwood and Starcross (sta. 8), between Starcross 

 and Powderham (sta. 4), on all which grounds the soil was of the 

 nature described. It was met with in smaller quantity on the banks 



