SOMK LOCAL DKTAILS. Jgj 



middle of which is a tumicod step iiiarkiiig an ancient sea 

 level. At the end nearest the i)ier tlie sea has a«(ain cut 

 hack to the old clilT, leavin- merely a narrow shelf ; hut 

 toward the inner side this slielF i-apidiy expands into the 

 sandy Hat aloiif,' which the main road runs, and which is 

 continuous with the lower plain extendin^r all the way to 

 the head of tlie hay. In this flat the upi)er portion of the 

 Pleistocene deposit seems to consist principally of sand 

 and oravel, restinir on stony clay. In the former, which 

 corresponds to the Saxicava sand of Montreal, I found 

 oidy a few valves of Telllna (hrnilnndica, which is still 

 the most abundant shell on the modern beach. !n the 

 latter, correspond inn- to the Leda clay, which is best seen 

 in some parts of the shore at low tide, I found a number 

 of deep water shells of the followin,!,' species, all of which, 

 except Splrorhis qjlrilliim and AphnnUte Grmnlandica, 

 have been found in these deposits at Quebec and 

 Montreal : 



FuHus tornatus. 



Trophm scalar if arm e. 



Margarita luilnna. 



Ci/livJina oeculta. 



Pcde n Is! a )i die us. 



TcUina calcarca. 



Leda truncata. 



Saxicava rngosa. 



Aph rodite Grcmlandica. 



Ml/til ns edulis. 



Ml/a areaaria. 



JJa/anus Hanieri. 



Spirorhis sjnrillum. 



S. vitrca. 



Scrjrida verm icuJaris. 



