418 Verrill, Notes on lladiata. 



1 inch to 2*5, with a diameter of about '07 ; they are round, slender, 

 and scarcely taper. The cells form low, swollen verrucae, which are 

 closely crowded over the whole surface. Coenenchyma moderately 

 thick. Axis slender and wood-yellow, opaque even at the ends. 

 Color light red. Height 5 inches ; breadth 4 ; diameter of stem '10. 



Spicula bright red ; club-shaped spicula numerous, with the small end 

 very acute. The larger spindles are rather slender, ends very acute, 

 warts prominent, not crowded, forming five or six irregular whorls 

 on each end, which become very small near the points. Shoi'ter spin- 

 dles very rough, with obtuse ends. Clubs very numerous, about as 

 long as the spindles, but much broader, the large end covei'ed with 

 numeroiis, large, prominent, rough warts and spines, which diminish 

 toward the small end, which tajDcrs to a sharp point. Polyp-spindles 

 pale yellow, long and slender, covered with small, nearly smooth warts. 



The longer spindles measure -240"'™ by -060, -228 by -060, -228 by 

 '048, -222 by '072, -168 by -036 ; stouter spindles -168 by -072, -144 by 

 •084, -102 by -066 ; clubs '252 by -084, -216 by -072, -210 by '084, -192 

 by -084, -168 by -060 ; polyp-spindles -loO by -018, -144 by -036, -132 

 by -030, -114 by -036. 



Pearl Islands, very rare, — F. H. Bradley. 



This species is remarkably distinct from the preceding three in its 

 mode of branching, its long and quite slender branchlets, and espe- 

 cially in its very peculiar s])icula. It diifers widely from all other Gor- 

 gonians of the coast, known to me, in the form and abundance of the 

 singular club-shaped spicula. 



Family, Pkimnoid^. 



Primnoacees Val. ; Edw. and Haime, Coral]., vol. i, p. 138. 



Primnoadce, Acanthogorgiadoe and Muriceidce Gray, Ann. and Mag. Nat. Hist., 1859, 



p. 442. 

 Primnoacea Kolliker, Icones Histiol., p. 135, 1865. 

 Plexauridce (pars) and Primnoaceoe Verrill, Revis. Polyps, E. Coast U. S., p. 8, 1864. 



Corallum usually branched, sometimes simple. Axis horn-like or 

 more or less calcareous, especially at base. Cells prominent, covered 

 with large scales or spicula. Coenenchyma with large scales or spi- 

 cula, the outer ones conspicuous at the surface. Longitudinal ducts 

 many and equal on all sides, or few and symmetrically arranged. 

 Muricea Lamonroux (restricted). 

 Muricea (pars) Lam'x, Expos, meth., p. 509, 1821 ; Blainville, Man. d'Actinologie, p. 

 509; Ehrenberg, Corallenthiere, p. 134; Dana, Zooph., p. 673; Edw. and Haime, 

 CoralL, vol. i, p. 142, 1857, etc. 

 Muricea Kolliker, Icones Histiologicse, ii, p. 135, 1865 ; Verrill, American Jour. 

 Science, vol. xlv, p. 411, 1868. 



