8 



Everywhere along the coast in tide pools, crevices of rocks 

 and in all depths up to 8o fathoms. 

 V^ Modiolus demissus plicatula, Lamarck. 

 (Ribbed mussel.) 

 Casco Bay (Chickering, 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). 

 y 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. 



V 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). 



V 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, 185 1. 

 Casco Bay to Eastport. 

 l"^ Thracia conradi, Couthouy. 



Casco Bav to Eastport. 



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