Anisothyris (Pachydon) Gabb, 1869 † accepted as Pachydon Gabb, 1869 † (basis of record)
Anisothyris (Pachydon) tumida Etheridge, 1879 † accepted as Pachydon cuneatus (H. Woodward, 1871) † (original description)
Assiminea crassa Etheridge, 1879 † accepted as Littoridina crassa (Etheridge, 1879) † (original description)
Cerithium coronatum Etheridge, 1879 † accepted as Sheppardiconcha coronata (Etheridge, 1879) † (original description)
Corbula canamaensis Etheridge, 1879 † accepted as Pachydon erectus (H. Woodward, 1871) † (original description)
Dreissena acuta Etheridge, 1879 † accepted as Mytilopsis scripta (Conrad, 1874) † (original description)
Hydrobia dubia Etheridge, 1879 † accepted as Littoridina crassa (Etheridge, 1879) † (original description)
Melania bicarinata Etheridge, 1879 † accepted as Dyris bicarinatus (Etheridge, 1879) † (original description)
Melania scalarioides Etheridge, 1879 † accepted as Lorus scalarioides (Etheridge, 1879) † (original description)
Melania tricarinata Etheridge, 1879 † accepted as Dyris gracilis Conrad, 1871 † (original description)
Melanopsis brownii Etheridge, 1879 † accepted as Aylacostoma brownii (Etheridge, 1879) † (original description)
Neritina puncta Etheridge, 1879 † (original description)