566 REPORT ON THE STATE CABINET. 



EUCALYPTOCRINUS ORNATUS, HaLL. 

 PLATE XI, FIGS. 4, 5. 



JEucalyptocrinus ornaius, Hall. Rep. Prog. Geol. Survey Wisconsin for 1860, p. 20. 1861. 



This species is common at Racine and Waukesha. It occurs as casts 

 of the interior, but retaining the marks of its structure in a greater or 

 less degree of perfection. The impressions of the exterior in the com- 

 pact limestone are very well marked and characteristic of the species. 



Some specimens of the casts have a somewhat obtusely pentagonal 

 form, with a broad spreading base, and a constricted upper margin. In 

 this condition they much resemble in form and proportions the Rhodo- 

 crinus melissa of the Niagara shale at Waldron, Indiana. 



EUCALTPTOCRINUS C^LATUS, HaLL. 

 Eucalyptocrinus ctBlatus, Hall. Palseontology of New York, II, p. 210, Plate 47, fig. 4. 



Some specimens of casts of the intei-ior and impressions of the exterior 

 surface of a species of Eucalyptocrinus, from Waukesha, appear to me 

 not to be distinguishable from the New York species. 



GENUS CYATHOCRINUS, Miller. 

 Ctathgcrinus pcrsiLLUs, Hall. 



Cyathocrinus pusillus, Hall; in Transactions Albany Institute, IV, p. 200. 1862. 

 Compare Poteriocrinus pisiformis, Roemer. Die Silur. Fauna des Westliohen Tennessee, p. 54, 

 Plate iv, fig. 7. 



Specimens of a small species of Cyathocrinus or Poteriocrinus, resemble 

 the one described by Roemer, presenting characters somewhat interme- 

 diate between that species and C. pusillus. 



Formation and Locality. — In limestone of the age of the Niagara group 

 at Racine, Wisconsin. 



Cyathocrinus cora, n. s. 



PLATE XI, PIGS. 13, 14. 



Body rotund, somewhat broadly tui-binate, rounded below, and gently 

 contracted a little below the middle of the subradial plates and 

 swelling out above ; having the upper margins of the radial plates 

 incurved and prominent in the middle. There is a single small anal 

 plate. The basal plates are comparatively large, rising above the 



