﻿IIEMIPIIOLIS. 



137 



Ophiocnida neapolitana Lyman. 



Ampldura neapolitana Saus. Nyt Magaziu for Naturvidenskabcrne, X. p. 35. 1857. 

 LIST OF SPECIMENS. 



Whence obtainea. 



Museum of Comparative Zoology. 

 416 I . . I . . I Alger. I I Jardin dcs Plantes. I Alcoliolic, 



HEMIPHOLIS Agass. MS. 



Disk, above, covered with rounded, rather thick scales, and with large 

 radial shields ; below, naked. At the base of each arm, disk slightly 

 mdented. Teeth. No tooth-papillae. Two mouth-papillse to each angle 

 of the mouth. Side mouth-shields touching each other, so as to form a 

 continuous ring round the mouth. Three short, tapering arm-spines. 

 Two genital slits, beginning outside the mouth-shields. 



Hemipholis cordifera Lyman. (P1. I. Figs. 1-3.) 



Asterias cortlifera Bosc. Hist. Nat, des Vers, 11. p. 113 (1802), IL p. 138 (1830). 



Ophiura eloncjata Say. Journ. Pliil. Acad., V. p. 146. 1825. 



Ophiolepis elongala Stimpson. Proceed. Boston Soe. Nat. Hist., IV. p. 225. 



Ophiolepis uncinata Ayres. Proceed. Boston Soc. Nat. Hist., IV. p. 250. 



Hemipholis elongata Agass. MS. 



Ampliiura elongata LtJTKEN. Addit. ad Hist. Oph., p. 115. 



Ampldura cordifera Lyman. Proceed. Boston Soc. Nat. Hist., VII. p. 258. 



Special Harks. — Arms eight or nine times as long as diameter of 

 disk. One tentacle-scale. Three or four papillae at base of arms ; and 

 a row of fleshy papilla3 along genital sUts. 



Description of a Specimen. — Diameter of disk, 8.3""°- ; from outer 

 side of mouth-shield to outer corner of opposite mouth-slit, 3"""- ; width 



