Verrill, Notes on Radiata. 439 



spindles are only moderately stout, one end usually larger than the 

 other and more or less obtuse, the other end generally acute, tlie sur- 

 face rough with unequal warts and spinules. The stouter spindles are 

 short and thick, frequently irregular and crooked, both ends usually 

 tapering to blunt points, one being often quite obtuse, the surface 

 densely covered with small rough warts. Some stout spicula are 

 club-shaped, with the large end divided into two or three blunt, warty 

 lobes. The medium sized spindles are very strongly warty with 

 large, unequal, rough warts, which are not crowded ; most of them 

 are quite slender and acute, others stouter and blunter. 



The longer spindles measure 1-42™" by -325'"'", 1-37 by -350, 1-37 

 by -325, 1-37 by '275, 1-32 by 300, 1-25 by "300, 1-20 by -275, ri2 by 

 •275, 1-12 by -225, 1*04 by -275, 1-02 by -225, '950 by -225, -875 by 

 •175, ■H25 by -200, '825 by -175; the stouter spindles 1^50 by -500, 

 1^37 by -350, 1^32 by -350, 1'17 by -475, '\-\n by '425, 1-17 by -350, 

 1-12 by -300, -925 by •SOO, -875 by ^325, -800 by -350, ^700 by -300, 

 •700 by -250, ^575 by -300, •SCO by ^250 ; the stout clubs 1-25 by ^500, 

 •825 by ^325, ^325 by -250 ; the smaller spindles ^950 by -150, ^900 by 

 •250, ^725 by •ISO, "725 by -125, -675 by -150, '650 by •lOO, -525 by 

 •100, ^525 by -075, ^425 by -100. 



Panama, in rocky pools at low-water mark, — A. Agassiz, J. H. 

 Sternbergh, F. H. Bradley ; Pearl Islands, common, — F. H. Bradley. 



This species is very distinct from the others of this sub-section, in 

 its white color and the much larger and more regular spicula. Its 

 color and peculiar verrucae will also readily separate it from all other 

 species which resemble it in size and mode of branching. 



Muricea hetaes Verrill. ' 



Mu/ricea hebes (pars) Verrill, Bulletin Museum Comp. Zool., p. 36, 1864; Proc. Boston 

 Soc. Nat. Hist., vol, x, p. 328, 1866. 



Plate VII, figure 8. Plate VIII, figure 11. 



Corallum yellowish brown, small, sparingly dichotomous, forming 

 low clumps of few branches, which are short, moderately stout, and 

 clavate. 



The base is flat and expanded, often giving rise to several stems, 

 which mostly fork close to the base, each branch dividing again at 

 from -5 to 1 inch from its origin. Some of these branches again fork, 

 but many remain simple and are 1 to 2-5 inches long. When young 

 the stems are often erect, simple, clavate, and 1 or 2 inches high. The 



Trans. Connecticut Acad., Vol. I. 56 January, 1869. 



