Mytilus pectinulus, Stimpson, 1851.
Casco Bay to Eastport.
vA 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-


7 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.
Ws Casco Bay to Eastport.
Periploma (Cochlodesma) leana (Conrad).
Cochlodesma leanum, Stimpson, 1851.
Casco Bay to Eastport.
k— Thracia conradi, Couthouy.
Casco Bay to Eastport.
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Thracia truncata, Mighels and Adams, 1842.
Casco Bay to Eastport.
Thracia myopsis, Beck.
Thracia couthouyi, Stimpson, 1851.
Casco Bay to Eastport.
/ Pandora (Clidiophora) gouldiana, Dall.
Pandora trilineata, Stimpson, 1851.
Casco Bay to Eastport.
“ Lyonsia hyalina (Conrad).
Casco Bay to Eastport.
Lyonsia arenosa (Moller).
