Verrill, jSfotes on Radiata. 555 



and crooked branches ; these often give off similar large and iri-eo;ular 

 secondary branches, which like the secondary branches are closely 

 pinnate along their Avhole length the pinnae or branchlets being sepa- 

 rated by intervals of -10 to -15 of an inch ; most of these are again 

 pinnate and many of them bipinnate and tripinnate, in the same man- 

 ner, the branches being everywhere closely crowded, and often sepa 

 rated by spaces not exceeding their diameter, and seldom exceeding 

 •15 or -20 of an inch. The branchlets are short and variously curved, 

 spreading abruptly at wide angles, the tei-minal ones varying in length 

 from -10 to -50 of an inch ; they are more or less angular and covered, 

 except along a narrow, often indistinct, median space, with crowded, 

 prominent, rounded verrucfe. ]Main branches strongly sulcated on 

 the sides ; and partially covered with distant, scattei-ed verrucse. 



Color deep orange-brown ; the borders of the cells mostly bright 

 yellow; the main branches streaked with red and yellow, moi-e or less 

 blended, due to the two colors of the spicula. 



The largest specimen is 22 inches high ; 21 broad; diameter of tlie 

 main branches -25 to -40 ; of the branchlets -05 to "10, mostly about -07. 



The spicula are deej) red and bright yellow intermingled with some 

 that are light purplish. They are large for the genus, and consist 

 largely of short, stout double-wheels with fnuch fewer double-spindles. 



The longer doiible-spindles are quite slender, mostly acute, with a 

 wide median space, and there are four whorls of small, separate warts 

 on each end. The stouter double -sjjindles are similar, but blunter and 

 have moi'e crowded warts. The double-wheels are mostly about as 

 bi'oad as long, with a well developed median space, bordered by broad, 

 often sharp-edged "wheels," beyond which there is a smaller terminal 

 wheel on each end; the edges of the wheels are often rough or warty 

 on one side. 



The longer double-spindles measure -132'"™ by -042""°, -126 by -030, 

 •108 by ^036; the stouter double-spindles measure -132 by -048, ^120 

 by •048, 108 by '048, -108 by -042, ^102 by ^054, -102 by ^042; the 

 double-wheels •OGG by ^048, -060 by '060, •OGO by '054, -054 by -054. 



La Paz, in 6 to 8 fathoms, by divers, rare, — J. Pedersen ; Mazatlau, — 

 J. Dickinson ; Acapulco, — A. Agassiz. 



In mode of growth, this species resembles E. aurantiaca and E. Da- 

 niana, but it is more densely ramulous, with larger and more promi- 

 nent verrucae than either of those species, and the double-wheels are 

 stouter and in form quite different from those of both, and much lar- 

 ger than those of the latter. The color is also peculiar in the six 

 specimens examined. 



