1915] PALAEOzOIC FossiILs FROM Hupson BAY. 49 
STROPHEODONTA, sp. indet. 
Plate IV, Figure 17. 
One imperfect pedicle valve. About 25 mm. wide and"1 7mm. high. 
Moderately convex. Cardinal line extended beyond the general width 
of the shell. Surface marked with very fine striae and an occasional 
stronger one. 
Locality—Limestone rapids, Fawn river, District of Patricia, Ontario. 
Horizon—Silurian. 
No. 413 S. Royal Ontario Museum of Palaeontology. 
STROPHEODONTA, sp. indet. 
Plate IV, Figure 18. 
One imperfect pedicle valve. Cardinal angles broken, but the shell 
was probably 35 mm. wide and 22 to 25 mm. high. Valve strongly 
convex. Surface lost, but indications remain of fairly coarse stria— 
much coarser than in the species described above. This form is possibly 
Strophomena donnettit mentioned by Salter as occurring on Griffith’s 
island. (Journal of a Voyage, etc., App. p. ccxxiv, pl. 5, figs. 11 and 12.) 
Locality—Above Limestone rapids, Severn river, District of Patricia, Ontario. 
Horizon—Silurian. 
No. 414 S. Royal Ontario Museum of Palaeontology. 
GLASSIA VARIABILIS, Whiteaves. 
GLASSIA VARIABILIS, Whiteaves. Geol. Sur. Can., Ann. Rep., Vol. XIV, pt. F, p. 42, 1904. 
GLASSIA VARIABILIS, Whiteaves. Geol. Sur. Can., Palaeoz. Foss., Vol. III, pt. IV, 273 and 
277, pl. 26, figs. 3, 4, 5, 7, 8, 9, 1906. 
GLASSIA VARIABILIS, Parks. Bur. Mines of Ont., 22nd Rep., pt. I, p. 192, 1913. 
This species appears to be abundant, and is represented by thirteen 
specimens resembling the types of the species rather than the variety 
figured by Whiteaves in figures 7, 8 and 9 op. cit. 
Locality—Above Limestone rapids, Severn river, District of Patricia. 
Horizon—Silurian. 
No. 385 S. Royal Ontario Museum of Palaeontology. 
CAMAROTOECHIA EKWANENSIS, Whiteaves. 
CAMAROTOECHIA EKWANENSIS, Whiteaves. Geol. Sur. Can., Ann. Rep., Vol. XIV, pt. F, 
Pp. 42, 1904. 
CAMAROTOECHIA EKWANENSIS, Whiteaves. Geol. Sur. Can., Palaeoz. Foss., Vol. III, 
pt. IV, p. 252, pl. 25, figs. 4, 4a and 4b, 1906. 
CAMAROTOECHIA EKWANENSIS, Parks. Bur. Mines of Ont., 2nd Rep., pt. I, p. 192, 1913- 
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