NO. 1923. DESCRIPTIONS OF PACIFIC ALCYONARIA—NUTTINO. 63 



PLUMARELLA SPINOSA Kinoshita (not Ktikenthal). 

 Plumarella spinosa Kinoshita, Primnoidae von Japan, 1908, p. 11. 



Colony 35 cm. long, and with a spread of 25 cm. ; strictly flabellate, 

 the main stem giving off irregularly alternate main branches which 

 themselves give off a few irregularly disposed secondary branches. 

 Ultimate branches irregularly alternate, forming a plane surface, 

 about 10 or 12 to 5 cm. The calyces are in 2 rows on distal ends of 

 twigs only, otherwise in 3 to 5 irregular rows, but not in whorls; club- 

 shaped, 1.5 cm. high including operculum, and 1 mm. broad at distal 

 end. The margin is armed with usually 4, sometimes 5 or 6, not 

 very long points. The scales are in 8 rows, 6 to the row except in the 

 adaxials, which have 3. The scales regularly imbricating, each with 

 a rounded distal edge. 



The operculum is only moderately elevated, composed of flat 

 triangular flaps, the ends of the adaxial ones being tucked under the 

 ends of the others. 



Color: Axis dark brown, lightening distally. General color light 

 buffy-brown. 



Localities.— StSition 4769; lat. 54° 30' 40'' N.; long. 179° 14' E.; 

 244-237 fathoms. Station 4781; lat. 52° 14' 30" N.; long. 174° 13' 

 E. ; 482 fathoms. Station 4787 ; north point Copper Island, N. 79° E:, 

 8.5 miles; 54-57 fathoms. 



Distribution. — The type was from Mochiyama, Japan, 180 fathoms, 

 and other specimens from Doketsuba, Japan, 130 fathoms. 



The calyces resemble the type quite exactly. The specimen 

 described above is coarser than the type and usually has 4 rows of 

 calyces instead of 2, although there are 2 on the distal ends of the 

 twigs. 



PLUMARELLA FLABELLATA Versluys. 

 Plumarella flabellata Versluys, Primnoidse of the Siboga Expedition, 1906, p. 16. 



A fragmentary specimen is referred to this species. It consists of a 

 single branch 18 cm. long, sHghtly flattened (the cross section is 2 mm. 

 by 2.5 mm.), forking distally. 



The ultimate branches are alternate, 10 or 11 to 5 cm. in length of 

 branch. The calyces are irregularly distributed on all sides of the 

 branches, sometimes in pairs but never in regular whorls, thickly 

 crowded, 25 to 30 in 1 cm. They are small, stout, club-shaped^ 

 usually less than 1 mm. in height. The scales are heavy, coarsely 

 granulated, the edges with irregular lobes and points or irregularly 

 ctenate. Some of the marginal scales bear short spines, but they 

 are often as represented by Versluys. Some of these points are 

 triangular and others are spatulate. The adaxials are 3 or 4 ia 

 number; the abaxials 6. 



