32 BULLETIN OF THE 



ous, crowded, obtuse branehlets, many of which again divide in a similar 

 way, and oven their subdivisions arc sometimes pinnate. Color variable, 

 often yellow or whitish with purple cells; axis yellowish, subtransparent, 

 compressed. — Ilavti, W. I. ; P. F. Weinland. 



Leptogorgia rigida Verrill. 



Arborescent, rather tall, branching numerously and irregularly, some- 

 what in a plane. Principal branches long, irregular, often crooked, sub- 

 pinnate, giving off lateral branches at irregular intervals of similar 

 character. Very variable in form and color; often deep bluish purple, 

 less frequently orange, ferruginous, or while; axis black, amber colored 

 near the ends. — Acapulco, Mexico; A. Agassiz, P. B. Vanbrunt. — Cape 

 St. Lucas, California; J. Xantus. — Panama; J. II. Sternberg. 



L-eptogorgia ampla Verrill. 



Very large flabelliform. Several large, nearly equal branches, springing 



close to the base, curve outward at first and then ascend nearly parallel, 

 giving off, usually at intervals of two or three inches, long and rather thick 

 branches ami branehlets of nearly uniform size, which at first spread 

 nearly at right angles and then rise abruptly, parallel to the main 

 branches. The largest specimen is '20 inches high; 1G broad. Color 

 bright lemon-yellow. — Margarita Pay, Lower California (?) ; A. Garret. 

 Possibly from the Bonin Islands. 



Rhipidogorgia flabellum Valenciennes, Ooniptes-renrhis, XLI. p. 13. 1855. 

 Svx. Gorgonia flabellum Lixx. — Florida, West Indies, and Bermuda; 

 L. Agassiz, A. S. Bickmore. 



Rhipidogorgia stenobrachis Val. 1855. 



Svx. Gorgonia stenobrachis Val. Voyage de la Venus, PI. 12, fig. 1; 

 Rhipidogorgia Eugelmanni IIoi:x, Proc. Phil. Acad. Nat. Sci. 18G0, 

 j). 233. 



I have satisfied myself, by an examination of the original specimen of 

 Horn, that the species last quoted was founded on a small and bad specimen 

 of /,'. stenobrachis. \n the Museum there are large numbers of specimens, 

 both dry and in alcohol, from different localities on the Pacific coast 

 showing a complete series between the extreme forms, which, indeed, 

 seem to depend more on age than any other cause. — Acapulco, Mexico; 

 1). 1'.. Vanbrunt, A. Agassiz. — Panama; A. Agassiz, J. II. Sternberg. 



Rhipidogorgia Agassizii Verrill. 



Fronds broader than high, very finely and evenly reticulated, the open- 

 ings nearly square or pentagonal, about .12 of an inch in diameter. The 

 very short thick base divides at once into numerous small ami nearly 

 equal branches, which subdivide so evenly and rapidly that the principal 

 branches cannol usu ill) be traced more than half across the frond. Terminal 

 branehlets free for about one fourth of an inch. Cells small, crowded, 



