52 (Bulletin of the Natural History Society. 
148.— KELLIA PLANULATA. — Stimpson. 
Eastport, Maine, eight to fifteen f., Bay of Fundy> 
Verrill (F). 
149. — MACTRA LATERALIS.— Say. 
Ten miles north of Shediac, Whiteaves (H). Northum- 
berland Straits, Wliiteaves (I). 
150. — MACTRA SOLIDISSIMA, — Chemnitz, (Hen clam). 
Eastport, Stimpson (A). Grand Manan, in sand at low 
water, Stimpson (A), (B), Bay of Fundy, low- water 
mark to ten f., sandy, Verrill (F). Point du Chene, 
Whiteaves (H). Shediac, Whiteaves (I). Very large 
and abundant at Hospital Island, Passamaquoddy 
Bay. 
151.— MACTRA OVALIS— Gould. 
Mactra poxderosa.— Phil. (A), (B. 
Eastport, Stimpson (A). Gould (E). Grand Manan, 
with M. solidissima , Stimpson ( B). Verrill (G). 
152.— THRACIA TRUNCATA. — Mighels and Adams. 
Grand Manan, ten f., coarse sand, Stimpson (B). Bay 
of Fundy, Verrill (F). 
153. — THRACIA MYOPSIS.— Beck. 
Grand Manan, Stimpson (B). Gould (E). 
