CALYPTOCRINID^. 337 



gate nodes. Anus at the end of a small tube, rising 4 to 5 mm. above the 

 tips of the arms. Ventral part of the calyx not visible in any of the speci- 

 mens. Column round, the nodal joints very long and rounded at the outer 

 margins, the younger joints short and narrow. 



Horizon and Locality. — Niagara group ; Lockport and Eochester, N. Y. 



Type specimen in American Museum of Natural History, New York. 



EemarJcs. — It is probable that the specimens which Hall referred to 

 Eucdlyptocrimis decorus Phillips, are identical with this species. They cer- 

 tainly differ essentially from the English species (Plate LXXXH., Fig. 15), 

 which is proportionally shorter and stouter, the plates heavier and more con- 

 vex, the partition w^alls thinner, the anal tube stronger, and the column 

 obscurely pentangular instead of round. 



The Waldron specimens with ornamented plates, which Hall identified 

 with this species, have been referred by us to Eucalyptocrinus Elrodi Miller. 



EucalyptOCrinuS tuberCUlatUS Miller and Dyer. 



Plate LXXXIIL Figs. 8, 9, 10. 



1878. Miller and Dyer; Journ. Cincin. Soc. Nat. Hist., Yol. I., p. 36, Plate 2, Figs. 9, 9«, 

 1885. W. and Sp. ; Revision Palseocr., Part III., p. 134. 



Syn. Eucalyptocrinus muralis Einguebeeg ; 1890, Annals N. Y. Acad. Sci., Yol. Y., p. 805, Plate 

 3, Pig. 3. 



In its general form resembling the preceding species, but differing some- 

 what in the proportions of the plates. Dorsal cup obconical, nearly as high 

 as wide, sides slightly convex, the lower end moderately truncated. Plates 

 a little elevated and covered by numerous tubercles of various size, larger 

 ones being interspersed between smaller ones; the suture lines distinctly 

 grooved. Columnar concavity narrow, its depth less than the width ; the 

 basals completely covered by the upper end of the column. 



Eadials considerably longer than wide, rapidly tapering downward, 

 rounded at the bottom; the lower end inflected to meet the basals; the 

 lower face very narrow, equal to one third the width of the upper, which is 

 rather deeply concave ; the sloping upper faces short. First costals longer 

 than wide, narrowest at the upper end. Second costals wider than the first, 

 pentangular or hexangular. First distichals from one third to one half 

 smaller than the costals ; the second barely one third the size of the first ; 

 the arm-bearing palmars very much smaller and triangular. First inter- 

 brachials elongate, once and a half as long as wide, and nearly as large 



43 



