564 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxxiv. 



UMBELLULA CARPENTERI Kolliker. 



Umhellula carpenteri Kolliker, Report on the Pennatulida dredged by 

 H. M. S. Challenger during the years 1873-1876, 1880, p. 23. 



A number of specimens collected during the Hawaiian cruise at 

 the following stations are referable to this species : 



Distribution.— l^ovt\\e?isi coast of Hawaii: Station 4060, 759-913 

 fathoms. (Cat. No. 25343, U.S.N.M.) 



Between Oahu and Kaui: Station 4125, 963-1124 fathoms. (Cat. 

 No. 25344, U.S.N.M.) 



Off Kaui: Station 4139, 512-339 fathoms (Cat. No. 25342, 

 U.S.N.M.) ; Station 4187, 508-703 fathoms (Cat. No. 25345, 

 U.S.N.M.). 



The type specimen was secured by the Ghallengev in the North Pa- 

 cific, south of Yeddo, from a depth of 565 fathoms. 



UMBELLULA JORDANI, new species. 



Plate XLII, fig. 3. 



Total length of large specimen about 400 mm. ; polyps to tentacle 

 bases 17 mm.; tentacles, not fully expanded, 11 mm. There is an 

 end bulb at proximal end of the stem which is continuous with a 

 swelling which is distinctly quadrangular in section. Otherwise the 

 stem is quite slender, quadrangular in section, gradually merging at 

 its distal end into the short rachis. 



Polyps nine, in largest specimen, eight being arranged around a 

 central ninth, the whole head showing little trace of bilateral sym- 

 metry in this specimen, although it is distinct in other and smaller 

 ones. Polyp bodies smooth, not strongly corrugated as in U. huxleyi^ 

 which appears to be the most nearly related known species. 



Zooids. — Rather large, not very much crowded on terminal swell- 

 ing, where they tend to assume a linear arrangement,- the lines being 

 continuous with the patches of zooids between the polyp bases. These 

 patches are drawn into a long angle below. A few zooids are seen 

 among the polyps on the dorsal side, and also on the lower swelling 

 and end bulb. They are not so large as those of Z7. huxleyi. 



Spicules apparently wanting. 



Color. — In alcohol, stem nearly white; polyps umber brown, ex- 

 cept where the surface is abraded. In the latter case the color is 

 bluish white. 



This species resembles U. huxleyi in color, and U. magniflora in 

 arrangement of zooids, but does not have the conspicuous terminal 

 flattened SAvelling of the latter. 



Named in honor of President David Starr Jordan, of Stanford 

 University. 



ry^e.— Cat. No. 25319, U.S.N.M., Albatross Station 3985, off 

 Kauai, 430-777 fathoms. 



