AMPHINEURA. 
Moll 77 
Placiphorella velata (Carpter. MS.), Calif ornia, p. 306, borealis, Bering Is., 
p. 309, Pilsbry in Tryon’s Manual, xiv, figg., n. spp. 
^ Placophoropsis, n. subg. of Plaxiphora , type P. atlantica, Yerrill & Smith; 
Pilsbry in Tryon’s Manual, xiv, p. 313. 
Plaxiphora excurvata (Carpter. MS.), Australia ?, p. 327, obtecta ( ib .), 
New Zealand, p. 330, Pilsbry in Tryon’s Manual, xiv, figg., 
n. spp. 
Tonicia fubridens , Chili, Pilsbry in Tryon’s Manual, xiv, p. 202, fig., 
n. sp. 
