8 



Everywhere along the coast in tide pools, crevices of rocks 

 and in all depths up to 80 fathoms. 

 Modiolus demissus plicatula, Lamarck. 



(Ribbed mussel.) 



Casco Bay (Checkering, Fuller, Verrill, Kingsley) ; banks of 

 New Meadows river, Brunswick (Prof. Lee, Norton and Ler- 

 mond) ; Hanaseeket river, Freeport (Dr. W. C. Kendall) ; 

 Sheepscot river, Lincoln county (Winkley) ; Damariscotta 

 river at Newcastle, most northern Maine record (Wentworth). 

 Modiolaria discors (Linne). 

 Modiolaria laevigata, Gray. 

 Modiola discrepans, Mighels, 1843. 



Casco Bay to Eastport. 

 Modiolaria nigra (Gray), 1824. 



Modiola pectinula, Gould, 1841. 

 Modiola nexa, Mighels, 1841. 

 Mytilus pectinulus, Stimpson, 1851. 



Casco Bay to Eastport. 

 Modiolaria corrugata (Stimpson). 



Mytilus corrugatus, Stimpson, 1851. 



Casco Bay to Eastport. 

 Dacrydium vitreum (Moller). 

 Modiola vitrea, Moller, 1842. 



Just outside Casco Bay, 50 to 95 fath. (Verrill, Kings- 

 ley). 

 Crenella glandula (Totten). 



Modiola glandula, Mighels, 1843. 



Casco Bay to Eastport. 

 Crenella decussata (Montagu). 



Mytilus decussatus, Stimpson, 1851. 



Casco Bay to Eastport. 

 Periploma fragilis (Totten). 



Periploma papyracea, Conrad. 

 Anatina papyracia, Gould, 1870. 



Casco Bay to Eastport. 

 Periploma (Cochlodesma) leana (Conrad). 

 Cochlodesma leanum, Stimpson, 1851. 



Casco Bay to Eastport. 

 Thracia conradi, Couthouy. 



Casco Bay to Eastport. 



