NO. 1624. DESCRIPTIONS OF HA WAIIAN ALCYONARIA— NUTTING. 565 



Distribution.— O^ Kauai: Station 3985, 430-477 fathoms (Cat. 

 No. 25319, U.S.N.M.) ; Station 3989, 385-500 fathoms (Cat. No. 

 25322, U.S.N.M.) ; Station 3997, 418-429 fathoms (Cat. No. 25321, 

 U.S.N.M.) ; Station 4185, 1,000-1,314 fathoms (Cat. No. 25320, 



U.S.N.M.). 



UMBELLULA GILBERTI, new species. 



Plate XLII, fig. 4. 



Total length of stem 185 mm.; end bulb and lower swelling to- 

 gether 30 mm. ; polyp body to tentacle base 8 mm. ; tentacles 20 mm. 



Stem slender, with end bulb and swelling better differentiated 

 than in the last species, the latter quadrangular in section. Sym- 

 metry radial. 



Polyps, in best specimens, five in number; bodies smooth, longi- 

 tudinally ribbed by the mesenteries showing through. Tentacles 

 much longer in proportion than in U. joi'dani. 



Zooids very few in number, in groups of five or six between the 

 bases of the polyps, apparently without tentacles. A few are seen 

 sparsely distributed on terminal swelling. They are apparently 

 absent from specimen from Station 4183. 



Color. — Stem very light brown; end bulb and swelling moie de- 

 cided sienna brown ; polyps umber brown, the ribs lighter. 



Named for Prof. Charles H. Gilbert, of Stanford University. 



Type.— C^t. No. 22586, U.S.N.M., Albatross Station 4183, off Kaui,' 

 957-1,067 fathoms. 



Off Bird Island : Station 3979, 222-387 fathoms. 



UMBELLULA, species. 



Plate XLII, fig. 9. 



A fragmentary specimen was secured at Station 4126, between 

 Oahu and Kauai, which had- but two j)olyps and a very short portion 

 of the stembelow the raehis. 



This specimen is not sufficiently well preserved for specific descrip- 

 tion, but the following points were made out : 



The two polyps are nearly opposite, with bodies about 13 mm. long 

 and tentacles 23 mm. The body is much corrugated transA^ersely 

 and has eight longitudinal ribs. 



Raehis broad and club-shaped. 



Spicules very numerous, small, needle-shaped, crowded throughout 

 the entire surface of raehis, polyps and tentacles. 



Zooids not easily distinguishable, but apparently rather sparsely 

 distributed on surface of raehis and basal parts of poljqDS. 



This is the only Umbelliila in the collection that has evident spicules 

 on the raehis and polyps. 



Proc. N. M, vol. xxxiv — 08 37 



