46 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 43. 



KOPHOBELEMNON HISPIDUM, new species. 

 Plate 6, fig8. 2, 2a. 



The colony is 7.8 cm. in length. The stalk is short and not sharply 

 distinguished from the rachis, broadened immediately below the 

 polyps, where it is 1.5 cm. wide in front view, but only 4 mm. thick 

 from front to back. Its proximal end is broadened and truncated, 

 the leathery integument with which it is covered being tucked in at 

 the end as if partly involuted. The narrowest part of the stem is 

 immediately above the end bulb, where it is round and 4.5 mm. in 

 diameter, and its surface is covered with numerous small needles, 

 giving it a hispid appearance, which suggests its specific name. 



The polyjis are three in number, almost in line above the flattened 

 rachis, the middle one, however, being distinctly higher than the 

 lateral ones, which are on the same level. They are much shrunken 

 and distorted, the bodies being narrower below and broadening to 

 5 mm. at the tentacle bases. Height to tentacles 1.2 cm. Tentacles 

 1.6 cm. long, laterally compressed. There are 16 pinnules which are 

 very slender, round in section, and covered on back and sides with a 

 close felting of longitudinal spicules so closely packed as to completely 

 cover the surface. The tentacles are also covered on all sides with 

 these slender needles. 



The zooids are low, verruciform bodies, often showing a central 

 aperture. They are regularly distributed on all exposed parts of the 

 stem and rachis. Their walls are filled with the same needle-like 

 spicules that cover the entire colony. They are vertically arranged 

 in the walls of the zooids, with their points converging toward the 

 margins. 



Spicules: These are all slender needles, or rather slender rods with 

 rounded ends. They are seldom over 1 mm. in length. 



Color: The colony is gray, excepting the tentacles, which have a 

 brownish tinge. 



Localities.— Station 4956; Mizunoko Shima Light, N. 22° W., 33 

 miles; 720 fathoms (type). Station 4977; Shio Misald Light, N. 65° 

 E., 7 miles; 544 fathoms. 



Type-specimen.— Cat. No. 30094, U.S.N.M. 



This form greatly resembles one that the writer has described as 

 Umbellula, sp. ?^ 



Family ANTHOPTILID^ Kolliker. 



Pennatulids bearing free, sessile polyps. Calyces absent. 



I Nutting, Hawaiian Alcyonaria, 1908, p. 565. 



