CYST£D3 AND BLA.STOIDS. l39 



Cryptoblastus melo (Owen & Shumard). 



Plate xviii, flgs. 7a-b. 



Pentremites melo Owen & Shumard, 1850: Jour. Acad. Nat. Sci., Phila., 



vol. 11, p. 65, pi. xvii,fig3. 14a-c. 

 Pentremites vielo Owen & Shumard, 1852 : U. S. Geol. Sur. Wisconsin, 



Iowa and Mionesota, p. 592, pi. vA, figs. 14a-c. 

 Elccacrinus melo Shumard, 1863: Trans. St. Louis Acad. Sci., vol. II, 



p. 112. 

 Granatocnnus melo Shumard, 1865: Trans. St. Louis Acad. Sci., vol. 11, 



p. 875. 

 Oranatocrinus melo Meek & Worthen, 1869: Proc. Acad. Nat. Sci., Phila., 



p. 84. 

 Schizoblasius melo Ethridge & Carpenter, 1882: Ann. and Mag. Nat. Hist., 



vol. ix, p. 246. 

 Schizoblasius melo Ethridge & Carpenter, 1886: Cat. Blastoidea, p. 232, 



pi. vii, fi»s. 14-15. 



Calyx ellipsoidal to subglobose, lobate, flattened slightly 

 above ; basal portions somewhat contracted, and excavated 

 below ; interradial areas deeply grooved in the middle. Basal 

 plates small. Eadials elongate ; bodies very small ; limbs long, 

 making up more than three-fourths the calyx; sinuses extend- 

 ing the entire length of the calyx. Deltoids small, triangular. 

 Ambulacra sublinear, quite convex, lying deeply in the sin- 

 uses. Surface granular. 



Horizon and localities. — Lower Carboniferous, Lower 

 Burlington limestone : Sedalia, Louisiana, Hannibal. 



Cryptoblastus kirkwoodensis (Shumard). 



Plate xYii, figs. 8a-b. 



Elceacrinus kirkwoodensis Shumard, 1863: Trans. St. Louis Acad. Sci., 



vol. II, p. 113. 

 Cryptoblastus kirkwoodensis Ethridge & Carpenter, 1886: Cat. Blastoidea, 

 p. 114. 



A form closely related to G. melo, but very much smaller, 

 and with the base less deeply excavated. 



Horizon and localities — Lower Carboniferous, St. Louis 

 limestone: Kirkwood ( St. Louis county ). 



Granatocrinus neglectus ( Meek & Worthen). 

 Pentremites melo , var. neglectus Meek & Worthen, 1861: Proc. Acad. Nat. 



Sci., Phila , p. 142. 

 Granatocrinus melo ^ var. projectus Shumard, 1866: Trans. St. Louis Acad. 



Sci., vol. II, p. 375. 



