Verrill, Notes on Radiata. 555 



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

 secondary branches, which like the secondary branches are closely 

 pinnate along their whole 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 bijnnnate 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 terminal 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 verrucse. Main branches strongly sulcated on 

 the sides ; and partially covered with distant, scattered verrucoe. 



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

 yellow; the main branches streaked with red and yellow, more or less 

 blended, due to the two colors of the spicula. 



The largest specimen is 22 inches high ; 24 broad; diameter of the 

 main branches -25 to "40 ; of the branchlets 'Oo 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 much fewer dovible-spindles. 



The longer double-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-spindles are similar, but blunter and 

 have more crowded warts. The double-wheels are mostly about as 

 broad 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 wai-ty 

 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 -066 by -048, -060 by -060, -060 by ^054, -054 by -054. 



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

 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 i)romi- 

 nent verruca? than either of those species, and the doul)le-wheels are 

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

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

 specimens exammed. 



