PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 127 
Bittium nigrum (Totten) Stimp. Gould, Inv. Mass., II, p.321,1870. Ver., Inv. V.S., 
p. 648, 1874, 
Very abundant amongst the eel-grass, in shallow water in front of 
the town, and off the dike, and also on the beaches, where it often 
occurs in immense numbers. 
Crepidula fornicata (Linné) Lamarck. Gould, Inv. Mass., II, p. 271,1870.  Ver., 
Inv. V.S., p. 649, 1874. 
Common, especially in the vicinity of the dike, on shells of Pecten 
and Ensatella. 
Crepidula plana Say. Gould, Inv. Mass,, II, p. 272, 1870. Ver., Inv. V.S., p. 650, 1874. 
Common off the dike, and also found elsewhere. 
Crepidula convexa Say. Gould, Inv. Mass., II, p. 273,1870. Ver., Inv. V.S., p.-650, 
1874, 
Abundant off the dike, adhering to the surfaces of living and dead 
shells, to Limulus, and other objects. 
Acmea testudinalis (Miiller) Forbes and Hanley. Ver., Inv. V. S8., p. 661, 1874. 
Gould, Iny, Mass., II, p. 267, 1870 ( Tectura). 
Rare, shore; variety alveus also found. 
Odostomia bisuturalis (Say) Gould, Inv. Mass., II, p. 327,1870. Ver., Inv. V.S., ps 
656, 1874. 
Not uncommon; eel-grass off the dike, and elsewhere. 
Odostomia trifida (Totten) Gould, Inv. Mass., I, p. 274, 1841; II, p. 328, 1870. Ver. 
Inv. V. 8., p. 656, 1874. 
Associated with the last, and about equally common. 
Odostomia dealbata Stimp. Gould, Inv. Mass., II, p.327,1870. Ver., Inv. V.S.,p. 
656, 1574. 
A single specimen only was obtained from the eel-grass off the dike. 
Melampus lineatus Say, Am. Conch., p. 85, 1822.—Melampus bidentatus Say. Gould, 
Inv. Mass., II, p. 457, 1870. Ver., Inv. V.S., p. 662, 1874 (non Mont.). 
Abundant, shore, between tides. 
Onchidoris, sp. 
An undetermined species of this genus was obtained from sea-weeds 
on the inner beach at Long Point. 
Tergipes despectus Ald. and Han. Ver., Inv. V.S., p. 667, 1874.—olis (Tergipes) 
despecta Gould, Iny. Mass., II, p. 248, 1870. 
From hydroids, on piles of wharves, and sea-weeds of beach. 
Embletonia fuscata Gould, Inv. Mass., IT, p. 251, 1870. 
Found among the filamentous green alge in little rills of water on the 
beaches and sand-flats. 
Stiliger fuscata Bergh. Ver., Prelim. Check List, p. 23, 1879.—Calliopea (?) fuscata 
Gould, Iny. Mass., II, p. 250, 1870. 
Associated with Embletonia fuscata, 
