554 Verrill, JVotes on Radiata. 



of the west coast known to me. The base is large and spreading. 

 The trunk is thick at base, usually very short, dividing at once into a 

 number of main branches. Sometimes several trunks arise from the 

 same expanded base and form large parallel fronds, close together. 

 The main branches give otF, subpinnately from each side, at distances 

 of '5 to 2 inches, irregularly alternating secondary branches, which on 

 the oiiter branches are more numerous on the upper or inner side of 

 the branches. The secondary branches subdivide in the same man- 

 ner, as do their branches and branchlets in turn, until many of them 

 are five or six times divided. The branches and branchlets mostly 

 start out at a wide angle and then bend abruptly upward and become 

 sub-parallel. The terminal branchlets are often from two to six inches 

 long without division, and usually rather slender, a little compressed, 

 with a well-marked median groove and a very narrow median naked 

 space. The polyp-cells are very numerous, scarcely raised, and form 

 a broad band on each side. 



The color is uniform light yellowish brown or chestnut, varying 

 somewhat in tint in difierent specimens, sometimes nearly brick-red. 



One of the largest specimens is 34 inches high ; 28 broad ; diameter 

 of the base 6 ; of the trunk 1 '50 ; of the main branches mostly 'SO to -40 ; 

 of the terminal branchlets '05 to "12, but mostly about '10 of an inch. 



The spicula are pale yellow and pink. The longer double-spindles 

 are moderately slender and acute, with about three irregular whorls 

 of well-separated, prominent warts. The stouter double-spindles are 

 larger and much stouter, bluntly rounded at the ends, with two 

 or three whorls and a terminal cluster of large, rough warts, which 

 are often crowded, but sometimes well separated. The double-wheels 

 are unusually small, mostly longer than broad, with very small term- 

 inal and larger median wheels. 



The longer double-spindles measure -108""" by -036""", '102 by -042, 

 •102 by -036, '102 by '030, '096 by 024, -090 by -033; the stouter 

 double-spindles -090 by -042, -084 by -048, -084 by -045, -078 by 

 •045; the double-wheels -048 by -042, -042 by '042, -042 by -036, -036 

 by -080, -030 by -030. 



La Paz, 6 to 8 fathoms, by divers, — J. Pedersen ; La Paz, — Major 

 Wm. Rich; Acapulco, — A. Agassiz. 



Eugorgia multifida Verriii, sp. nov. 



Corallum flabelliform, the branches very numeroiisly divided in a 

 pinnate manner, forming densely ramulous, but not reticulated fronds, 

 two or more sometimes arising from the same base. 



The trunk divides at the base into several large, irregular, divergent 



