xo. 1658. ALCYONARIA OF THE CALIFORNIA* COAST— NUTTING. 703 



The spicules are purplish pink in color, of two types: 1. Needle- 

 shaped forms situated on the upper parts of the ealveular walls on the 

 side toward which the pinna' are directed. 2. Long, bar-shaped 

 spicules on the lower ealveular walls, sides of pinnae and on the rachis. 

 They are often aggregated in lines on the pinna', making radiating 

 streaks. They also form patches on the under surfaces of the pinnae 



bases. 



Color. — In fresh specimens the pinna' are purplish; stem, upper 

 pari of bulb whitish; swelling pinkish shading to deep purple in the 

 middle part. Ventral part of rachis nearly white. 



Locality. — University of California Station 956, 30-140 fathoms, 

 off La Jolla, California. 



ACANTHOPTILUM ANNULATUM, new species. 



Plate LXXXVI, figs. II L3. 



Colony very slender. Length about 156 mm.; stem 68 mm. 

 There are about 170 pairs of pinna-, counting the rudimentary ones. 

 Full grown pinna- 5 nun. long by 1.5 mm . 



Polyps usually with 6 calyces to each well-developed pinna. Fach 

 ealveular margin is armed with 8 moderately acute points, composed 

 of ccenenchyma reenforced by a few spicules. The longest (distal) 

 polyps are about 2 mm. long to margin of calyx. • 



The zooids are in groups of 3 to 8, laterally placed; between adja- 

 cent pinna'. They are sometimes in a single row and sometimes in a 

 double row. 



The spicules are carmine pink in color, short rods with rounded 

 ends, quite small. They are arranged in 8 longitudinal lines in the 

 ealveular walls, the lines ending in the points around the margin. 

 These lines also extend downward between the extensions of the 

 body cavities of the polyps, or on the lines which indicate the parti- 

 tions between the latter, so as to constitute superficial markings on 

 the surfaces of the leaves, these markings radiating from the base to 

 the border of each leaf. The under pari of each leaf is marked at its 

 base by a distinct patch of densely aggregated spicules, bright car- 

 mine in color. These series of brightly colored spots, one on each 

 side of the rachis. give an annulated appearance to the colony in side 

 view and suggested the specific name " annulatum." 



The spicules are generally distributed over the stem and rachis, 

 but are less conspicuous on the former on account of the thickness of 

 the ectodermal covering. 



Color. The general color of the colon} is pink, owing to the com- 

 bination of carmine spinules and white coenosarc. The middle part 

 of the stem is purplish, the basal part being light pink, and the bulb 

 whitish. 



Type-specimen. — Cat. No. '_'."> l_'.V l.s.N.M. 



