no SMITHSONIAN INSTITUTION 



PLATE LII 

 (All figures natural size except where otherwise stated) ^^^^ 



Figs. 1-4. Taxocrinus communis (Hall) 387 



Fig. I. The type, antero-lateral view; a flattened specimen, showing the rounded calyx, presence 

 of iBr plates, and stem not enlarging at calyx but farther down. New York State 

 Museum, Albany. 



2. Left posterior view of smaller specimen; showing in side view the position of the first 



anal plate. Same collection. 



3. Young specimen showing immature characters of stem, with less swelling on receding 



from calyx. Same collection. 



4. A nearly complete specimen, slightly flattened. Shows in full the proximal contraction of 



the stem, followed by enlargement receding from the calyx (as indicated in the 

 type), and subsequent diminution distally ; also the unusual lengthening of the 

 columnals in the swollen part, and at intervals below. Author's collection. 

 Cuyahoga shales ; Lower Carboniferous. Richfield, Ohio. 



Fig. 5. Taxocrinus kelloggi (Hall) 388 



Fig. 5a. The type, considerably flattened; anterior view. Showing the usual stem of the genus; 

 wide iBr spaces ; and nodes on the axillary brachials. New York State Museum, 

 Albany. 

 S&. Left posterior view of same. 

 5c. Sketch of posterior basal, and anal structures. 



Cuyahoga shales ; Lower Carboniferous. Richfield, Ohio. 



Fig. 6. Taxocrinus interscapularis Hall 385 



Fig. 6. The type ; showing the narrow calyx and rapidly tapering arms. The base is broken off. 

 LTniversity of Illinois. New Bufifalo, Iowa. 

 Hamilton Gr. ; Middle Devonian. Iowa. 



Figs. 7-8. Taxocrinus telleri n. sp 386 



Fig. 7a. A nearly perfect crown ; anterior view. Coll. Mr. E. E. Teller. 



yb. Posterior view of same, showing anal plates. 



80. Abnormal specimen with seven rays ; found associated with the last, perhaps a young 

 individual of the same species ; anterior view. In this specimen the entire base, both 

 IBB and BB, is fused into a solid disk; the primibrachs are mostly 2; there are 6 per- 

 fect radials, and the seventh is vertically divided ; 6 rays bifurcate, and tlie seventh 

 remains single. X 2. Mr. Teller's collection. 



S&, c. Posterior and basal views of same. X 2. 



8d. Diagram of plates to first axillary. X 2. 



Hamilton Gr. ; Middle Devonian. jNIilwaukee, Wisconsin. 



Figs. 9-11. Taxocrinus lobatus (Hall) 386 



Fig. 9. The type, anterior view. The specimen is poorly preserved, is much injured, and does not 

 show the characters distinctly. In three visible rays it has but 2 IBr. Am. Mus. 

 Nat. Hist. Canandaigua Lake, New York. 



10. Posterior view of a fine specimen from the same locality, showing the perisome and other 



characters in great perfection. N. Y. State Museum, Albany, 

 iia. Another specimen from the same locality in author's collection, anterior view. 

 116. Posterior view of same; structures obscured by a gasteropod. 



Since the figures and descriptions for this work were printed I have received from 

 Miss Winifred Goldring, of the New York State Museum, a sketch of a fine column 

 belonging to this species, preserved to a length of 20 cm., which will be figured in the 

 forthcoming monograph of the Devonian crinoids of New York, now in preparation 

 by the State Museum. This column has the usual proximal enlargement typical for 

 the genus, but is remarkable for the regularly spaced enlarged nodals at intervals of 

 about 8 columnals ; these become less prominent distally until all become substantially 

 equal. No enlargement below the proximal cone. 

 Hamilton Gr. ; Middle Devonian. New York. 



