180 THE CRINOIDEA CAMERATA OF NORTH AMERICA. 
1885. Reteocrinus Onealli — W. and Sv.; Revision Paleocr., Part IIL., p. 86. 
1889. Gaurocrinus Nealli—S. A. Mitten; North Amer. Geol. & Paleont., p. 247. 
Syn. Glyptocrinus cognatus—§. A. MrtreR; 1881, Cincin. Journ. Nat. Hist., Vol. IV., p. 75, Plate 
1, Figs. 5, 5a. 
Syn. Gaurocrinus cognatus —S. A. Miter; 1881, Cincin. Journ. Nat. Hist., Vol. VI., p. 229. 
Syn. Refeocrinus cognatus — W. and Sp.; 1881, Revision Palxocr., Part II, p. 193. 
Calyx obconical; interradial and interaxillary spaces deeply depressed, 
producing a pentagonal outline below the distichals, and decagonal above 
them. 
Infrabasals small, but projecting beyond the column. Basals large, their 
lateral margins deeply impressed, forming an elongate pit in which the upper 
angles of the infrabasals and the lower angles of the radials are involved. 
The radials, costals, and lower distichals are folded abruptly inward, their 
sides extending to the bottom of the interradial and interdistichal spaces, 
leaving a very narrow surface exposed, not more than the width of the 
arms. Distichals ten to fourteen, of which six to seven are located within 
the calyx walls, the others free. Of the fixed plates, the three or four 
proximal ones are larger and especially longer than the succeeding ones, 
which are nearly as short as the free plates. A second bifurcation takes 
place in the free arms, giving twenty arms to the species. Arms long, 
cylindrical, gradually tapering, and composed of short, wedge-formed pieces. 
The first pinnule, which is given off from the second distichal, is more erect, 
and considerably stouter than any of the rest. The second pinnule, which 
occurs on the opposite side at the fourth plate (the third bears no pinnule), 
is smaller than the first, but larger than the third, which is of the ordinary 
size. The three proximal pinnules are incorporated into the calyx, the 
succeeding ones free. Interbrachials and interdistichals very numerous, 
exceedingly small, and of very irregular form and size ; the marginal pieces, 
as a rule, being smaller than the others. Anal side marked by a conspicuous 
median ridge. Tegmen low-hemispherical, decagonal in outline ; the spaces 
overlying the food grooves slightly elevated. Anal opening excentric, almost 
marginal, placed in the middle of a small protuberance. Column pentan- 
gular, the outer faces slightly impressed ; composed alternately of thin and 
somewhat thicker plates, the latter protruding considerably beyond the 
others. 
Lorizon and Locality. — Upper part of the Hudson River group; Warren 
Co., O.; rare at Cincinnati. 
Type specimen formerly in the collection of J. Kelley O’Neall, now in the 
collection of Wachsmuth and Springer. 
