Verrill, Notes on RacUata. 449 



long spindles. The larger spindles are mostly somewhat irregular or 

 crooked, sometimes forked at one end, usually acute at each end, but 

 sometimes blunt or truncate at one or both, densely covered with 

 rough, unequal warts. The slender s})indles are very long, slender, 

 acute at both ends, often bent, the surface covered with sniall, distant 

 warts. 



The larger spindles measure 2-00'"'" by -325™'", 1-65 by -350, 1-57 by 

 •200, 1-52 by '250, 1-37 by -200, 1-35 by -300, 1-32 by -250, 1-20 by 

 •200, 1-17 by -275, 1-17 by '250, 1-17 by -200, 1-10 by '200, 1-05 by 

 •250, 1-02 by '225, 1^02 by -200, -800 by -150 ; the slender spindles 1-37 

 by •riS, 1-32 by -125, 1-25 by -112, 1-25 by -125, 1-12 by -ISO, 1-07 by 

 •125, 1-05 by -100, -100 by lOO, '925 by'-lSO, -900 by -087, -875 by -100, 

 •875 by -087, '825 by -100. 



Panama, at extreme low water, very rare, — F. H. Bradley. 



This species bears little resemblance to any other, except the two 

 preceding, from both of which it differs in having much longer and 

 larger spicula. Its branches are much shorter and stouter than those 

 of M. tenella, and the verruc^e are very different from those of M. 

 appressa. 



MemarJcs 07i the subdivisions of the Gemis^ 3Iuricea. 



In addition to the 18 species of Muricea described in the preceding- 

 pages, there are at least 12 other species now known, of which all except 

 four are in the Museum of Yale College.* 



All those species which I have examined may be naturally grouped 

 in three divisions, which do not appear, however, to be of more than 

 subgeneric value, even if entitled to that rank. But in view of the 

 manifest tendency among recent authors to multiply generic divisions, 

 I have thought it proper to recognize these groups and give them 

 names. 



Group 1, Eumuricea. This division corresponds with section A, page 

 419. It includes those species with tu1)ular verruca^ witliout a 

 prolonged lower lip, and usually 8-rayed at summit in contrac- 

 tion. The spindles both of the coenenchyma and verruca? are long 

 and usually sharp pointed. The 5 species described above are all 

 that are known to me. Typical species, M. acervata V. 



* The species not in this collection are M vatricosa (Val.) K611. ; M. humom (Esp.) 

 Koll. ; M. tuberculata (Esp.) K611. ; M. sulphurea Ehr. Also 31. elongata Laiiix. {non 

 Dana), which is believed to be an Acis, from "W. Indies. 



