308 THE FAUNA OF THE EXE ESTUARY. 



CRUSTACEA. 



Haustorius arenarius. One in clean sand. 



MOLLUSCA. 



Cardium edule. Several. 

 Tapes decussate. Common. 

 Tellina tenuis. One in sand. 



Scrobicularia piperata. A few in muddy 

 Trochus cineraiius. A few. [sand. 

 Littorina littorea. Not uncommon. 



POLYZOA. 

 Loxosoma phascolosomatum. Not uncommon on the po.sterior end of Phascolosoma. 



Station 13. COCKLESAND. 



The soil on tliis bank consists of sand and sandy mud of varying 

 consistency, covered in places with Zostera and Enteromorpha, the 

 fauna being very similar to that of grounds of this character already 

 described. This bank remains uncovered for a considerable time 

 between each tide. 



List of Species. Shore Collecting. 



July 7th, 13th, 22nd, 1901. 



POLYCHJilTA. 



Xereis diversicolor. Xot iincommon Xerine cirratulus. A few. 



in mudd\' sand. Scoloplos armiger. A few. 



Nephtliys cirrosa. One. Arenicola marina. Abundant. 



„ Hombergii. Several taken. Ophelia bicornis. One in clean sand. 



Pygospio seticornis. Very common in Lanioe conchilega. A few. [bed. 



sand. Melinna adriatica. A few in Zostera 



CRUSTACEA. 



Carcinus mannas. Small, not uncommon among weed. 



Crangon v;;lgaris. Small, common. 



Schistomysis Helleri. Three. 



Talitrus locusta. Common in sand and weed at high tidal levels. 



INSECTA. 



Heterocerus femoralis. Common burrowing in fine, loose sand. 



MOLLUSCA. 

 Mytilus edulis. Several. 



Cardium edule. Very common on or just below the surface. 

 Tapes decussata. Several where the ground was coarse. 

 Tellina balthica. Common lying on the surface of the mud. 



„ tenuis. Not imcommon in sand. 

 Scrobicularia piperata. Very common in stifif mud. 

 Littorina littorea. Very common on weed. 

 Hydrobia ulvse. Very common among weed. 



