TAXOCRINIDAE 389 



This species is readily distinguished from T. communis, its fellow of the same horizon 

 and locality, by its large radials and diminishing primibrachs, and the consequent broadly 

 rounded calyx ; wide interbrachial spaces, and nodes upon the axillaries ; also by the form of 

 the stem. It is more nearly like T. lobatits of the Devonian, which has the same nodose axil- 

 laries and heavy arms, but differs in the smaller radials and the very large anal tube. 



Type. But a single specimen is known, and that is in the New York State Museum, 

 Albany, New York. 



Horizon and locality. Base of the Lower Carboniferous, lower part of Waverly group, 

 Cuyahoga shales ; Richfield, Ohio. 



Taxocrinus intermedius Wachsmuth and Springer 

 Plate LIU, figs. 1-6 



Taxocrinus intermedius Wachsmuth and Springer, Proc. Acad. Nat. Sci. Philadelphia, 1888, p. 344, pi. 18, 

 figs, la-e; Geol. Surv. Illinois, VIII, 1890, p. 199, pi. 15, fig. 11; N. A. Crinoidea Camerata, 1897, 

 pi. 3, fig. 11, pi. 8, figs. 5a, 6. — Von Zittel, Grundziige Palaeontologie, 1895, p. 138, fig. 272. — Zittel- 

 Eastman, Textbook Paleontology, 1896, p. 164, fig. 272 (2d Ed., 1913, p. 178, fig. 276, and p. 206, 

 fig. 306). — Bather, Geol. Mag. (Dec. IV), V, 1898, p. 524; Treatise on Zoology (Lankester), pt. 3, 

 1900, p. 126, fig. 37. 



A large species. Crown low, broad and massive, broadly rounded below; 

 height to width at about IIBr 3 1.2 to 1. Calyx relatively low, hemispheric, 

 height to width at IAx, 1 to 2. Spread from column facet, 1 to 3.3; side outline 

 evenly convex. Rays broad, and not projecting above level of iBr. Arms heavy 

 below, tapering rapidly from IIBr to small finials, with short divisions to four 

 bifurcations beyond which they infold. Sutures moderately sinuous. iBr 

 numerous, large, and about flush with rays; areas not depressed. Surface 

 smooth. Dimensions of large normal specimen: Crown, 42 mm. high by 35 

 mm. wide; base, 10 mm. 



IBB low, barely visible beyond column. BB fairly large; post. B high and 

 much wider than others, encroaching on space of r. post. R which is smaller than 

 its fellows. RR over twice as large as BB, and nearly twice as wide as long", 

 except r. post. R, which is reduced in width by encroachment of first plate of 

 anal series. IBr 3, exceptionally 2, similar to RR, continuing about the same 

 size and nearly uniform except for the axillary IBr 3; IIBr 3, exception- 

 ally 4, large, not diminishing upward. IIIBr 3 or 4 inner, 5 or 6 outer ; brachials 

 5 or 6 to 8 or 9 in next division; the last two divisions diminishing in size rapidly 

 from one bifurcation to another, and having very short brachials. Anal tube 

 relatively rather small, composed of plates about as long as wide, .connecting at 

 each side with finely plated perisome; first plate large, resting in a deep 

 socket at right side of post. B and encroaching on r. post. R. iBr consisting of 

 a number of large plates, having a crescentic distal margin curving to the rays 

 at about the top of the first axillary; they are succeeded by fine perisome con- 

 necting at the inner distal margin, and extending like a pouch high up the rays 

 to about the upper IIBr; similar heavy iBr plates in less number occur in the 

 second and third axils. Column large, flush with the infrabasal ring; composed 



