Page:Smithsonian Miscellaneous Collections, Volume 85.djvu/130

Plate 8

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Canadia dubia Walcott			6
Fig.	1.	A fairly large specimen.
	2.	(✕ 2.) A specimen showing the intestinal tract.
Canadia setigera Walcott			5
Fig.	3.	(✕ 3.) Retouched figure of a specimen showing the bundles of spines particularly well.
Pikaia gracilens Walcott			7
Fig.	4.	(✕ 2.) A wide specimen. The illustration is slightly retouched.
	5.	(✕ 2.) Another rather well preserved example.

Plate 9

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Ottoia minor Walcott			6
Fig.	1.	(✕ 2.) A short form that may have its shape because the mouth parts are retracted.
	2.	(✕ 2.) Small specimen, showing intestinal tract, doubtfully referred to the species.
	3.	(✕ 2.) Apparently the anterior end of a poorly preserved individual.
	4.	(✕ 2.) Another form like fig. 2.
	5.	(✕ 2.) A specimen with a peculiar restriction that may be accidental.
	6, 7.	Retouched photographs of a particularly fine individual. The whole specimen is enlarged somewhat (✕ 1.5) and the anterior end considerably (✕ 4).
Canadia dubia Walcott			6
Fig.	8.	(✕ 2.) Unretouched photograph ot a small individual.
Canadia simplex, new species			6
Fig.	9.	(✕ 3.) Retouched photograph of the holotype.
Canadia grandis, new species			5
Fig.	10.	(✕ 2.) Retouched figure of the holotype.

Plate 10

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Selkirkia major (Walcott)			7
Fig.	1.	(circa ✕ 3.5.) A large individual, possibly preserving the original proportions of the shell.
	2.	(circa ✕ 3.5.) Another specimen whose shell is more or less crushed, but with even better preservation of the soft parts.