12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



and at others these are not evident. The polyps are often extruded 

 above the calyces, their walls are filled with slender spindles verti- 

 cally disposed, and are longitudinally corrugated with 8 ridges on 

 which the spindles sometimes assume an en chevron arrangement. 

 The tentacles bear numerous minute spindles irregularly disposed 

 over their dorsal surfaces. 



The coenenchyma is packed with slender spindles, like those of the 

 polyps and calyx walls. They are usually vertically disposed, but 

 are sometimes crossed in various directions. 



The color of the colonies is light grayish yellow. 



Localities. — Station 4992 ; Bomasiri Shima (off north end of Rebun 

 To), Sea of Japan; 325 fathoms. Station 4985; Kamoi Mizaki Light, 

 N. 17° E., 15.2 miles; 224 fathoms. 



Type-locality. — Japan Sea, 1,000 meters. 



Apparently near Sympodium indicum Thomson and Henderson.* 

 These writers describe several species of Sympodium which would go 

 into the genus Clavularia, as used in this paper. 



CLAVULARIA SULCATA, new species. 

 Plate 1, figs. 2, 2a; plate 17, fig. 1. 



The largest colony is growing on a worm tube, and is 3.6 cm. in 

 height. The polyps are thickly emplanted over the distal portion 

 of the tube. Another colony grows in a straggling manner over a 

 pebble. The calyces are bent so as to be directed upward. 

 » A typical calyx is 1 cm. in height, club-shaped, 3 mm. broad at the 

 clavate end and 2 mm. broad near its base. The 8 ribs are very 

 strongly marked, and are closely packed with small longitudinal 

 spicules. The margin is 8-lobed, and the polyps are completely 

 retractile, their walls thin and with 8 strongly marked rows of longi- 

 tudinal and parallel spindles. The general coenenchyma is packed 

 with stouter spindles than those on the calyces. The tentacles are 

 strongly retracted and do not appear to bear spicules. 



The spicules are small spindles, closely warted throughout, rarely 

 attauihig a length of over 0.5 mm. They ai'e quite uniform, but vary 

 in diameter, some being almost bar-like. 



Color: Yellowish-brown, or tan color throughout. 

 ' Locality. — Station 4791; Cape Monati, Bering Island, N. 52° W., 

 8.75 miles; 76-72 fathoms. 



Type-specimen.— Cht. No. 30026, U.S.N.M. 



This species resembles C. petersoni Kukenthal,^ but differs in the 

 arrangement of spicules. 



1 Ceylon Pearl Oyster Fisheries Report, The Alcyonaria, 1905, p. 1. 



2 Japanische Alcyonaceen, 1906, p. 16. 



