“Amphiura lymani, new species.
Pl. 9, Fig. 13
A rather detailed impression of this brittle star was obtained from the uppermost transitional shales of the Chico formation, Locality 2, L. S. J. U. Pal. Coll. Disc small, diameter 4 mm., pentagonal in outline. Arms short, slightly tapering. Arm spines sharp, and slightly longer than the breadth of the brachial plates.
This species differs from Amphiura sanctæcrucis Arnold," in its smaller size, relatively shorter and less tapering arms, and in the slenderness of the arm spines. The genus to which the species belongs was kindly determined by Mr. Herbert Lyman Clark of Cambridge, Massachusetts, in whose honor the species is named.”
(Waring, 1917; 58)
