1915] PALAEOzOIC FossILts FROM HupsON Bay. 79 
the relatively greater length of the hyponomic sinus in our specimen. 
Mr. Tyrrell is to be congratulated on the discovery in Patricia of a 
representative of this exceeding rare genus. 
Locality—Above Limestone rapids, Severn river, District of Patricia, Ontario. 
Horizon—Silurian—Compare e2 of Barrande. 
No. 324 S. Royal Ontario Museum of Palaeontology. 
SEPTAMEROCERAS, Sp. tndet. 
A single cast of a small form, showing some evidence of the type 
of aperture characteristic of Septameroceras. Dorso-ventral diameter 
of chamber of habitation about 18 mm. 
Locality—Limestone rapids, Severn river, District of Patricia, Ontario. (Loose 
boulder not certainly local.) 
Horizon—Silurian? 
No. 327 S. Royal Ontario Museum of Palaeontology. 
GOMPHOCERAS (?), sp. indet. 
One fragment of a chamber of habitation showing a much contracted 
aperture, the character of which is not discernible. This seems to be 
a large form, probably 50 mm. or more in diameter. 
Locality—Above Limestone rapids, Severn river, District of Patricia, Ontario. 
Horizon—Silurian. 
No. 331 S. Royal Ontario Museum of Palaeontology. 
BARRANDEOCERAS (?), sp. indet. 
Plate VII, Figure 8; Plate V, Figure 11. 
BARRANDEOCERAS sp., Parks. Bur. Mines of Ont., 22nd Rep., pt. I, p. 195, 1913. 
A fragment of an internal cast without septa or siphuncle. The 
specimen is 130 mm. long and shows an increasing curvature towards 
the posterior. The cross section is broadly ovate with the narrow end 
internal. The anterior dimensions are 29 and 25 mm. The posterior 
dimensions are 19 and 17mm. The reference of the fragment to Barran- 
deoceras is of course conjectural only. 
Locality—Limestone rapids, Severn river, District of Patricia, Ontario. 
Horizon—Silurian. 
No. 342 S. Royal Ontario Museum of Palaeontology. 
