ASTEROIDEA OF NORTH PACIFIC AND ADJACENT WATERiJ KISHKR. 



333 



web. On actinal surface, parallol \nth median suture and slightly nearer it than 

 free margin, is a comb of two to eight skin-covered sometimes l)iisally webbed 

 spines similar to but smaller than corresponding series of first inferomarginal. 



Madreporic body situated about midway between center of disk and margin, 

 irregularly circular or oval, convex, irregularly and centrifugally striated; about 3 

 mm. in diameter. 



Color in life, "salmon pink." 



Young. — Young specimens agree very well with the large examples, except 

 that the papulae are less numerous, and there is a slight reduction in number of 

 spines of interradial, marginal, and adambulacral plates, as well as fewer interradiul 

 and marginal plates. In small specimens there is more often only one superomar- 

 ginal plate interpolated between the transverselj' oriented inferomarginals, and the 

 former are slightly more superic)r in position, at base of ray, than in adults. Adam- 

 bulacrals commonly with three to five furrow spinules proximally and three or 

 four actinal. Usually only one or two large ]iapula> to a mesh. Abactinal spine- 

 lets are not fewer in number than in adults, except in very young specimens, but 

 the suboral spinas are often lacking. The marginal plates are very nearly on the 

 margin in the interbrachial arcs. 



Type.— Cat. No. 21932, U.S.N.M. 



Type-locality. — Alhatros.^i station 2S30, Santa Barbara Islands, ("alifoniiu, in 

 414 fathoms on gray sand. 



Distribution. — From Washington to San Diego, Califoniia, in 31G to 603 

 fathoms. 



Specimen's examined. — Eighty-three, fiom the following stations: 



Specimens of Belerozonias altematus examintd. 



2839.. 

 293C. 

 2937. 

 2990. 

 3073. 

 313S. 

 3343. 

 4307. 

 4317., 

 4W0.. 



Santa Barbara Islands, California 



OH San Diego, California 



.do. 



OH Anarapa Island. California 



Ofl Soa Lion Rock. Washington 



South of MontL>rey Bay, California 



00 Destruction Island, Washington. 

 Vicinity of San Diego, California 



.do. 



Between San Diego and San Clemente, 



Islands, 

 on Santa Crui Islands. California . . 



49(M9ti 

 471-510 

 500-507 



Nature of bottom. 



gray sand . . 



mud 



green mud. 



green mud, fine sand. 



....do 



green mud 



447-510 black mud. 



V. S. N'aL Uua. 

 Do. 

 Do. 



Do. 

 Albatnu, I9M. 



Remarks. — This is one of the best-marked Solasterida' of the North Pacific, 

 the remarkable arrangement of the marginal jilates making it easily distinguishable 

 from any described form. 



