86 TRANSACTIONS OF THE ROYAL CANADIAN INSTITUTE. [VOL. XI 
ACTINOCERAS cf. CLOUEI, Barrande. 
Plate II, Figure 6; Plate VI, Figure 1. 
ORTHOCERAS CLOUEI, Barrande. Syst.Sil. dela Bohéme, pl. 432, figs. 1-6; pl. 433, figs. 1 
and 2; pl. 434, figs. 1-5, 1870. 
ORTHOCERAS CLOUEI, Barrande. Syst. Sil. de la Bohéme, texte, Vol. II, partie III, p. 718, 
1874. 
Our specimen, which consists of a portion of a siphuncle only, is 
referred to this species with considerable assurance, although the identi- 
fication of such material must be more or less doubtful. 
The siphuncle shows nine nummuloidal rings in a length of 53 mm. 
These rings do not taper gradually, for the first has a diameter of 23 mm., 
the seventh a diameter of 21 mm., and the ninth a diameter of 23 mm. 
The rings are evenly rounded with a slight orad aspect and are some- 
what oblique to the axis of the siphuncle. A vertical section shows 
that the constrictions between the rings are embraced by stout cal- 
careous deposits which form a system of internal rings alternate with 
the true siphuncular expansions. These internal rings are separated 
by outwardly directed, slightly curved tubuli which seem to penetrate 
the siphuncular sheath. The interior of the siphuncle is thus con- 
stricted to a diameter of about 6 mm. in which, unfortunately, the 
endosiphuncle has been destroyed. 
The very great similarity presented by Barrande’s figures and the 
fact that the type of Actinoceras clouet was obtained from Newfoundland 
leads me strongly to believe that the specimens are co-specific. 
Our form also presents a striking resemblance to the siphuncle 
’ figured but not named by Bigsby as Fig. 5, Pl. 30, Trans. Geol. Soc., 
Series II, Vol. I, 1824. 
The present example differs from Actinoceras keewatinense, Whiteaves, 
in the relatively greater width and less height of the siphuncular rings, 
also in the slighter obliquity of the segments and in the absence of the 
regular taper of Whiteaves’ species.! 
Locality—Drift at York Factory. 
Horizon—Doubtful. 
No. 311 S. Royal Ontario Museum of Palaeontology. 
OOCERAS CORDATUM, sp. nov. 
Plate III, Figure 3. 
This species is founded on a single fragment of a slowly tapering, 
laterally compressed cyrtocone. The transverse section is ovate with 
the narrow end external. Exogastric. The outer margin of the shell 
1 Geol. Sur. Can., Palaeoz. Foss., Vol. III, pt. IV, p. 246, pl. XXX, figs. 7 and 8, 1906. 
