NO. 1624. DESCRIPTIONS OF HAWAIIAN ALC YON ARIA— NUTTING. 561 



Family ECHINOPTILID^ Hubrecht. 

 Small, pennatiila-like forms in which the axis cjdinder is wanting. 

 Genus ECHINOPTILUM Hubrecht. 



ECHINOPTILUM MACINTOSHI Hubrecht. 

 EcMnopUlum macintoshi Hubrecht, Proc. Zool. Soc. London, 1885, p. 512. 



Specimens of this very interesting form were taken by the Alha- 

 tross at Station 3856, between Molokai and Maui, 127 fathoms (Cat. 

 No. 22564, U.S.N.M.) and at Station 4104, between Molokai and 

 Maui, 123-141 fathoms. 



The type Avas taken in the Japanese Sea at a depth of 71 fathoms. 



Family ANTHOPTILID^ Kolliker. 



Rachis without pinnules ; polyps on both sides of the rachis, in dis- 

 tinct rows ; ventral zooids present ; polyps naked, without calyces. 



Genus ANTHOPTILUM Kolliker. 



Polyps in many short rows, on both sides of rachis; no streak of 

 undeveloped polyps on lower part of rachis; zooids lateral, ventral 

 and dorsal. 



ANTHOPTILUM MURRAYI Kolliker. 



AntJioptiliuii murrayi Kolliker, Report on tlae Penuatulida dredged by 

 H. M. S. Challenger during the years 1873-1876, 1880, p. 14. 



The specimens in the Hawaiian collection agree with the original 

 description, except that the polyps are of a deep amber-brown color. 

 The bulb at the proximal end of the stem is greatly expanded into a 

 body much like the expanded roots of many gorgonians. 



Distribution. — Erben Bank, off the coast of California : Station 

 3793, 412-545 fathoms (Cat. No. 25324, U.S.N.M.). 



West coast of Hawaii: Station 4043, 233-236 fathoms (Cat. No. 

 25323, U.S.N.M.). 



The type was taken by the Challenger from the North Atlantic, 

 south of Halifax, at a depth of 1,250 fathoms. 



East coast of North America, 640-1,362 fathoms (Verrill). 



Family KOPHOBELEMNONID.E Kolliker. 



Polyps on both sides of rachis, in a single series or in distinct rows ; 

 polyps large, sessile, without calyces; rachis elongated, in compari- 

 son with that of the next family. 



