44 BULLETIN 64, UNITED STATES NATIONAL MUSEUM. 



case in the Eucalyptocrinites; but in the Codonicrinites [Pterotocrinus] they are 

 divided into four hands [arms] whereas in the Eucalyptocrinites they are divided into 

 two; consequently the first has only five solid plates and 20 hands [arms] and the 

 latter ten solid plates. 



It has only one interscapular [interbrachial] of an obtuse conical form and is placed 

 upon the junction of the two pelvic [radial] plates. 



I discovered it in the Carboniferous strata in the Cumberland Mountains, Tennes- 

 see, and in the same formation near Iluntsville, Alabama. 



Formation and locality. — Kaskaskia group. Cumberland Moun- 

 tains, Tennessee; Pulaski County, Kentucky; Iluntsville, Alabama. 

 Cat. No. 39922, U.S.N.M. 



Order MONOCYCLICA CAMERATA Bather 

 (Wachsmuth and Springer, part.) 



Suborder MELOCRINOIDEA Bather. 



Family MELOCEINIDjE Zittel (emend. Wachsmuth and Springer). 



Genus MELOCRINUS Goldfuss. 



MELOCRINUS ROEMERI Wachsmuth and Springer. 



Plate 10, figs. 11, 12. 



Actinocrinites verneuili Troost, Proc. Amer. Ass. Adv. Sci., II (read 1849) 1850, 



p. 60 (nomen nudum). 

 Turbinicrinites verneuili Troost; MSS., 1850. 

 Cytocrinus Ixvis Roemer, Die Sil. Fauna d. westl. Tenn., 1860, p. 56, pi. iv, 



figs. 2a, b. 

 Melocrinus verneuili Shumard, Trans. Acad. Sci. St. Louis, II, No. 2, 1866, p. 



381 (catalogue name). — Hall, 20th Rep. New York State Cab. Nat. Hist., 



1867, p. 327, pi. x, fig. 5. — Wachsmuth and Springer, Rev. Palseocri- 



noidea, II, 1881, p. 122 (catalogue name). — Miller, North Amer. Geol. and 



Pal., 1889, p. 261. 

 Ctenocrinus Ixvis Shumard, Trans. Acad. Sci. St. Louis, II, No. 2, 1866, p. 361 



(catalogue name). 

 Melocrinus Ixvis Wachsmuth and Springer, Rev. Paleeocrinoidea, II, 1881, 



p. 122 (catalogue name). — Miller, North Amer. Geol. and Pal., 1889, p. 261 



(catalogue name). 

 Melocrinus roemeri Wachsmuth and Springer, North Amor. Orinoidea Oanie- 



rata, 1897, p. 301, pi. xxn, figs. 11«, b. 



The reference of this species to Actinocrinus is explained by Doctor 

 Troost as follows: 



This crinoid (having only mutilated specimens of it) was mistaken for an Actino- 

 crinites and mentioned in the list of new crinoids published in the transactions of 

 the Association of Naturalists in Boston, in 1849, under the name of A. verneuili. 

 Having since discovered a more perfect specimen I have seen mine error, and that 

 it differs in its generic characters from Actinocrinites. 



To this new genus I have applied the name of Turbinicrinites from Turbinis, top, 

 to which I have retained the specific name of verneuili. 



It is inverted conical; its superior rim is pentagonal, the angles much projecting 

 and terminating in an arm. 



The capital integument is elevated in the center and is covered with polygonal small 

 plates terminating in the center in a rosette. The oral [anal] aperture is subcentral. 



