I915] PALAEOZOIC FOSSILS FROM HupsoN Bay. 59 
made out on the periphery a little below the mid height. Above the 
band the outline is convex to the suture, and the same type of outline is 
observed below the band but with a rather steeper slant. The whorls 
decrease rapidly in size and the spire presents an apical angle of about 
65 degrees. The aperture is probably fairly elongate, but there is no 
evidence as to the character of the lip. 
It is manifestly impossible to ascribe such an imperfect specimen 
to its proper genus, but I have no doubt as to its specific distinctness. 
In the original description (op. cit.) this form was placed under 
Clathrospira on account of its resemblance to C. deiopeia, Billings sp.! 
A more detailed examination and the construction of the restored 
figure shows that the apical angle is rather too small and the whorls 
of the spire not sufficiently depressed for the genera Clathrospira and 
Eotomaria.’ In the general shape of the shell the present species is very 
like Murchisonia vi1tellia, Billings,’ but it differs in the absence of a con- 
cavity in the outline of the whorl above the revolving band. Murchi- 
sonia vitellia is considered to be a Coelidium by Clarke and Ruedemann‘4 
while Whiteaves held the opinion that it might be ascribed to Lophos- 
pira.» Our specimen shows no evidence of the degree of angularity which 
is seemingly required for the genus Lophospira, and in consequence it 
is provisionally placed under Coelidium. The genus Pleihospira of 
Ulrich® is in many respects very close to the present species. Except 
for the larger apical angle of our species it might be compared with 
Murchisonia chamberlini, Whitfield.” 
Locality—Limestone rapids, Severn river, District of Patricia, Ontario. 
Horizon—Silurian. 
No. 346 S. Royal Ontario Museum of Palaeontology. 
EOTOMARIA cf. GALTENSIS, Billings sp. 
PLEUROTOMARIA GALTENSIS, Billings. Geol. Sur. Can., Palaeoz. Foss., Vol. I, p. 154, 
fig. 136; Ibid., Rep. 1863, p. 334, fig. 349. 
PLEUROTOMARIA GALTENSIS, Whiteaves. Geol. Sur. Can., Palaeoz. Foss., Vol. III, pt. II, 
Pp. 75, pl. 11, fig. 7, 1895. 
EOTOMARIA GALTENSIS, Clarke and Ruedemann. N.Y.State Museum, Mem. 5, p. 70, 
pl. 10, figs. 10-12, 1903. 
EOTOMARIA GALTENSIS, Whiteaves. Geol. Sur. Can., Palaeoz. Foss., Vol. III, pt. IV, 
P. 332, 1906. 
1 Geol. Sur. Can., Palaeoz. Foss., Vol. III, p. 75, pl. XII, fig. 1. 
? Geol. and Nat. Hist. Sur., Minn., Palaeontol., Vol. III, pt. II, p. 954. 
3 Geol. Sur. Can., Palaeoz. Foss., Vol. I, p. 156, fig. 138, p. 155. 
4 New York State Museum, Memoir 5, p. 67, pl. 7, figs. 9 and Io. 
5 Geol. Sur. Can., Palaeoz. Foss., Vol. III, p. 333. 
6 Geol. and Nat. Hist. Sur., Minn., Vol. III, pt. II, p. 1008, fig. 7, p. 100g. 
7 Geol. Sur., Wis., Vol. IV, p. 317, pl. 24, fig. 4. 
