No. 1623. NOMENCLATURE OF RECENT CRINOIDS—CLARK. 525 
Tlyocrinus Parmer 1885. 
1885. eran Revue Scientifique, XX XV, May 30, 1885, p. 691. 
Type.—tllyocrinus recuperatus Perrier (n. sp.). 
ihvs=mmud+ «pivor=lily. 
Perrier intended to write /lyerinus and to refer the species to 
the genus /lycrinus of Danielssen and Koren; but the specimen 
he had lacked the very character on which /lycrinmus was sepa- 
rated from Bathycrinus, besides presenting (according to Pro- 
fessor Perrier) some very remarkable features; so, as science only 
concerns itself with what authors do, not what thev intend, it 
becomes necessary to accept /lyocrinus as a generic term distinct 
from /lycrinus, based on characters quite foreign to the latter 
genus as diagnosed by its authors. 
Ilyocrinus recuperatus Prrrrmr, 1885. 
1885. Prrrier, Revue Scienuingue, XXXV, May 30, 1885, p. 691. 
Type-locality. Beslan Atlantic. 
recuperatus=Yecov ered. Paris Museum 
This species is figured by Perrier in 1886 in “Hixplorations 
Sous-Marines,” p. 273, fig. 193, under the name of Jlycrinus 
recuperatus. 
Iridometra A. H. Cuark, 1908. 
1908. A. H. Cuarx, Proc. Biol. Soc. Washington, X XI, p. 130. 
Lype.—Antedon adrestine A. H. CrarK, 1907, 
ip1s=the rainbow+ metra. 
Iridometra crispa A. H. Cuark, 1908. 
1908. A. H. Cuarx, Proc. Biol. Soc. Washington, X XT, p. 131. 
A nomen nudum. 
1908. A. H. Cuarx, Proc. U.S. Nat. Mus., XXXIV, p. 218. 
Type-locality.—Otf Laysan Island, See Islands; ‘148— 163 
fathoms. U. 8. 8. Albatross. 
crispa=curled. U.S. National Museum. 
‘Isis Linnmus, 1758. 
1758. Linnmus, Syst. Nat., 10th ed., p. 799. 
Type—t sis hippuris (n. sp.). 
‘Io1s=Isis, an Egyptian goddess. 
Isis aster Cuvirr, 1830. 
Isis 
1830. Cuvier, Le Réegne Animal, IIT, p. 229. 
Editorial error for /sis asteria. 
asteria Linnaus, 1766. 
1766. Linnzus, Syst. Nat., 12th ed., I, p. 1288. 
Lype- locality. Barbados Bruch West Indies. 
aorepia=an old name “an detached pentacrinoid columnars. 
