84 
VICTORIA MEMORIAL MUSEUM. BULLETIN NO. I 
Rafinesquina alternata (Emmons); Ctenodonta pulckella (Hall); 
Trocholites ammonias, Hall; Triarthus becki, Green; Ogygites 
canadensis (Chapman); Calymene senaria, Conrad; and Isoielus 
gig as, Dekay. 
The cotypes are in the Victoria Memorial Museum of Canada, 
numbers 7768, a-c, and were collected by the writer. 
.Postscript. — After the above was in type, it was discovered that the generic name Oliftonia 
had. been proposed by Dr. Foerstoi for striated Triplecias, Dr. Foerste's type is Cliftonia 
striata, a shell found in the Clinton at Clifton, Tenn. He describes it as having the external 
appearance of an Atiypa, with a very short hinge and a sub-circular form. The shape of the 
Silurian form is so different from that of any of the species referred to Oxopleeia in this paper, 
that the writer is not satisfied that they all belong to the same genus, though if such proves 
to be the case Cliftonia will take precedence over Oxopleeia. 
1 Bulletin Denison University, Yol. XIV, p. 82, pi. 3, figs. 39, 42 ; pi. 4, fig. 70, April, 1909. 
