30 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 43. 



in shape, a well developed one being 1.5 cm. in length and 4 mm. 

 broad at the base. The leaves are closely approximated, forming a 

 dense tuft or clump at the end of the colony. They overlap on the 

 dorsal surface, being alternate in position. There are eight calyces 

 in a single row on a fully developed leaf, directed outward, forward, 

 and upward. 



The individual calyces are tubular in shape, 2.5 mm. high and 1.9 

 mm. broad at the margin. The margin is ornamented with 8 sharp 

 points composed of a bundle of needle-hke spindles with their distal 

 ends approximated. The proximal ends of the same bundles form 8 

 rather obscure vertical ridges on the calyx walls. Inside of these 

 bundles there are a number of shorter horizontal needles on the 

 upper parts of the walls, and others irregularly disposed on other 

 parts of the walls. Some of the points project as much as 1.5 mm. 

 above the margin. 



The polyps are white, strongly retracted, and seem to have a few 

 small red spindles on the tentacles. 



The zooids are small, inconspicuous and situated in broken rows, 

 sometimes patches, in the sides of the rachis and between the leaves, 

 there being 12 to 15 in a row. Each zooid shows as a white papilla, 

 minute and surrounded by a fence of spicules. 



The dorsal and ventral surfaces of the rachis seem devoid of zooids, 

 although one of the rows may end in a patch of 5 or 6 on the ventro- 

 lateral side. 



The whole rachis is covered with red spicules, laid on haphazard. 

 The axis extends nearly to the end of the end bulb. 



The spicules are all slender, smooth needles, attaining a length of 

 2 mm. 



The color of the colony as a whole is a bright scarlet. The stem is 

 creamy wliite, and the polyps white. 



Localities.— Si&tion 4958; Mizimoko Shima Light, N. 26° W., 29.3 

 miles; 405 fathoms. Station 4959; Mizimoko Shima Light, N. 23° 

 W., 28.5 miles; 405-578 fathoms. 



Type-locality. — Indian Ocean. 



This species is very near to P. sanguinea Nutting, which has 6 

 polyps to the leaf, and the leaves less closely approximated. 



PENNATUXA NARESI KoUiker. 



Pennatula naresi Kolliker, Challenger Report, the Pennatulacea, 1880, p. 2. 



Colony 40 cm. long, stem 8.5 cm. long, with a strong deeply 

 corrugated enlargement about 1 cm. below the rachis, and a club- 

 shaped end bulb. The rachis is quadrate in section, being laterally 

 compressed. Its dorso-ventral diameter is 5 mm. and from side to 

 side it is 3 mm. There are about 35 pairs of leaves, which are not 

 closely approximated. The individual leaves are sickle-shaped, and 



