NO. 1923. DESCRIPTIONS OF PACIFIC ALGYONARIA— NUTTING. 67 



miles; 95 fathoms. Station 4934; Sata Misaki Light, N. 77.5° E., 7 

 miles; 152-103 fathoms (large colony, more decidedly brown than the 

 others). Station 4936; Sata Misaki Light, N. 21° E., 5.7 miles; 103 

 fathoms. Station 5070; Ose Saki, S. 8° W., 1.8 miles; 108 fathoms 

 (much hke the next, but the polyps are smaller; spiculation the 

 same). Station 5093; Joga Shima Light, N. 8° W., 5 miles; 302 

 fathoms (brighter in color; spines very slender). 



General distribution. — ^The type was from Yeddo Bay, Japan. 

 Other locaHties are Kei Islands, East Indies, 204-540 meters; Sagami 

 Bay, Japan, 100-400 fathoms; Suruga Bay, Japan, 1,200 fathoms; 

 Indian Ocean, 371 meters. 



These specimens differ from Versluys's figures ^ in slenderness of 

 calyces and prominence of spines. The latter is also noted by Kino- 

 shita in his description of this species. 



This is a very abundant and variable species, but the intergrada- 

 tions indicate that all of the specimens noted belong to the same 

 form. 



THOUARELLA RECTA, new species. 



Plate 7, figs. 1, la; plate 19, fig. 2. 



Colony incomplete, consisting of a stem 4.7 cm. long, on the distal 

 part of which the branches are arranged in spirals of three, while 

 they are arranged irregularly on the proximal portion. The branches 

 are usually simple, often fork, and occasionally give off branchlets. 

 The longest ultimate branchlet is 2.4 cm. long. Twigs very slender, 

 those of a given row being about 2 mm. apart. Polyps quite distant, 

 very irregularly distributed, mostly lateral, but showing a tendency 

 to an arrangement in long spirals of about 5 to a turn, each spiral 

 occupying about 4 mm. of the length of the twig. 



The calyces stand straight out from the branch, as in Stenella, and 

 are almost radially symmetrical, although the mouth is often slightly 

 inclined toward the distal end of the colony. The height of a tj^pical 

 calyx is about 1.4 mm., although they vary greatly in size, as if 

 calyces in various stages of growth were irregularly distributed along 

 the branches. The circumopercular scales are all armed ^vith long 

 slender spines. There are six scales to each longitudinal row in the 

 calyx walls, all provided with finely ctenate edges. 



The operculum is rather low and nearly concealed by the circum- 

 opercular spines. The opercular scales are triangular, and there is 

 little if any distinction between the adaxial and the others. The 

 large edge of these scales is ctenate. 



The scales of the stem and branch surfaces are rounded or irregular, 

 with some imbrication of their edges, and form two layers. 



« PrimnoidaB of the Siboga Expedition, 1906, p. 27, fig. 17. 



