308 Mr. J. Gwyn Jeffreys on Dredging 
Name of Species. 
| Northern. 
Tapes decussatus, J. .......+.. 
Lucinopsis undata, Penn. ...... 
?Gastrana fragilis, Z. .........: 
Tellina balaustina, Z. .........- 
CASSA PE Clear pers istoba' a als 
PSIG GH, Fs. ihis lees acatieca a 
POUT DBE C soo ie.s:cys etn 
fabula, Gronovius ...... 
donacimanei Ginccoctr: 
SU STL 27 ae aera 
Psammobia tellinella, Lam. 
costulata, Twit. ... 
Ferréensis, Chemnitz 
Mactra soda, isi. saae ess 
subtrunesta, Da C.:...\:.\. 
Boulforums Las a's aos ede 
Lutraria elliptica, Zam. ........ 
Scrobicularia prismatica, Mont... 
nitida, Mill. ...... 
alba, W. Wood 
Solecurtus candidus, Renier .... 
antiquatus, Pult. .... 
Solen pellucidus, Penn. ........ 
MISES Pel an cPeheie ie la ein ste 8 
SUNN GUE ran eye atsiaie «2 ae 612) 10 
Pandora ineequivalvis, Z. ...... 
Lyonsia Norvegica, Ch. ........ 
Thracia preetenuis, Pult......... 
papyracea, Polit ........ 
convexa, W. Wood .... 
distorta, Mont. ........ 
Poromya gyranulata, Myst and 
VE CSEN AID te nicsisistais «in eso) aye 
Neera abbreviata, Ford. ........ 
costellata, Deshayes ...... 
PPOSUPALA HN. We alas ics +. amps 
cuspidata, Oliwt ........ 
Worbulagipba, Ol in. 2. 0 ssi os © 
Miva FOmen te li nics <j» esas 
+Panopea plicata, Mont. ........ 
Saxicava Norvegica, Sp......... 
i a 
(eet eth elie eli 
Southern. 
Remarks as to distribution 
and synonymy. 
Fossil in Sweden and Nor- 
way. 
Zetlandic on the authority 
of Forbes, and Norwegian 
on that of M‘Andrew. 
Boulder-clay of Caithness 
(Peach), 
The northern and deep- 
water variety is Solen 
pima of Montagu = P. 
obtusa, Leach. 
Amphidesma phaseolina, 
Lam. 
Fossil in Sicily. 
Shetland (M‘Andrew). Fos- 
sil in Sicily. 
