CANADIA DUBIA Walcott
Plate 7, fig. 2; plate 8, figs. 1-2; plate 9, fig. 8
- Canadia dubia Walcott, 1911, Smithsonian Misc. Coll., vol. 57, p. 119.
Original description.—"This species is proposed to include a small chaetiferous annelid not over 10 mm. in length. One specimen shows a bundle of very fine setae on each side near the head."
Four of the original specimens are illustrated.
Cotypes.—U. S. N. M., Nos. 83936a-d.
CANADIA SIMPLEX, new species
Plate 9, fig. 9
A tiny organism that appears as a slender tube with a termination surrounded by a ring of setae constitutes the material to which Doctor Walcott attached this name.
Holotype.—U. S. N. M., No. 83937.
WIWAXIA Walcott 1911
WIWAXIA CORRUGATA (Matthew)
Plate 3, fig. 1
- Orthotheca corrugata Matthew, 1899, Trans. Roy. Soc. Canada, 2d ser., vol. 5, sec. 4, p. 42, pl. 1, fig. 3.
- Orthotheca corrugata Walcott, 1908, Canadian Alpine Journ., vol. 1, no. 2, p. 246, pl. 1, fig. 11.
- Wiwaxia corrugata Walcott, 1911, Smithsonian Misc. Coll., vol. 57, no. 5, p. 123, pl. 21, figs. 1-4.
A particularly fine example of this remarkable spined worm turned up in some of the more recent collections. Its picture is included since it may represent a relatively undistorted specimen with most of the plates retained.
Plesiotype.—U. S. N. M., No. 83938.
OTTOIA Walcott 1911
OTTOIA MINOR Walcott
Plate 9, figs. 1-7
Original description.—"This species differs from O. prolifica in its proportionally more slender form when elongated and straighter outline both when elongated and contracted. The hooks are also much
