NORTH-WEST OF ENGLAND AND NORTH WALES. 



131 



Spatangidce. 

 Spines common. 



Spicules rare. 



Annelida. 

 Pectinaria, sp. ?, fragments. 



Crustacea. 



Cy there lutea, MvJler. 



albo-maculata, Baird. 



pellucicla, Baird. 



porcellanea, Bairi. 



castanea, G. 0. Sars. 



tenera, Brad?/. 



Robertsoni, Brady. 



pulchella, Brad?/. 



tuberculata, G. 0. Sars. 



villosa, G. 0. Sars. 



concinna, Jones. 



badia, Norman. 



Cytheridea elongata, Brady. 

 Loxoconcha impressa, Baird. 



Balanus crenatus, Brug. 



Crisia eburnea, Linn. 



Ostracoda. 



Loxoconcha multifora, Norman. 



pusilla, Brady § Robertson. 



Cytherura cellulosa, Norman. 



clathrata, G. 0. Sars. 



striata, G. 0. Sars. 



angulata, Brady. 



cuneata, Brady, 



Cytheropteron latissimum, Norman. 



nodosum, Brady. 



Cytherideis subulata, Brady. 

 Sclerochilus contortus, Norman. 

 Paradoxostoma variabile, Baird. 



flexuosum, Brady. 



arcuatum, Brady. 



Cirripedia. 



Balanus balanoides, Linn. 



Polyzoa. 



Scrupocellaria scabra, Van Ben., var. 

 elongata, Smith. 



Insecta. 

 Elytra. 



MOLLUSCA. 



Conchifera. 



Anomia ephippium, Linn:. 

 Mytilus edulis, Linn., fi*y and 



small pearl. 

 Nucula tenuis, Mont. 

 Montacuta bidentata, Mont. 

 Cyamium minutum, Fabr. 

 Cardium edule, Linn. 



Donax vittatus, Da Costa, mode- 

 rately rare. 



Venus gallina, Linn. 



Tellina balthica, Linn. 



Mactra subtruucata, Da Costa, 

 small valves. 



Corbula gibba, Olivi, a valve. 



Pholas sp., a small fragment. 



Gasteropoda. 



Hydrobia ulvae, Penn., var. sub- 

 umbilicata, Jeffreys, common, 



Aclis supranitida, S. Wood. 

 TJtriculusobtusus,i¥rtW^.,one example. 



Seeing that the species that prevail most in No. 5, Silt-bed, 

 Hydrobia ulvce and Tellina balthica, are generally found most 

 abundantly in muddy estuarine flats, there can be little doubt that 

 the deposit partakes much of that character. 



Tbe other Invertebrates in the bed do not disagree with such 

 Q.J.G.S. No. 154. l 



