50 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.43. 



Localities. — Station 5054; Omai Saki Light, S. 54° W., 29.5 miles; 

 282 fathoms (type). Station 5056; Ose Saki, N. 37° E., 5 miles; 258 

 fathoms. 



Type-specimem.—C&t. No. 30099, U. S. N. M. 



One specimen has several expanded polyps with bodies 3.5 mm. 

 long. The spicules lie longitudinally in the body walls. Another 

 specimen is attached to a shell by its end bulb, an anomalous condi- 

 tion for a pennatulid. 



Genus STACHYPTILUM KoUiker. 



Calyces present, free; zooids ventral. 



STACHYPTILUM MACLEARI Kdlliker. 

 Stnchyptilum macleari Kolliker, Challenger Reports, the Pennatulida, 1880, p. 12. 



Length of colony 5.9 cm. Stem 3.5 cm., slender, with hardly 

 evident end bulb and swelling; greatest diameter 2 mm. The 

 calyces are in 12 rows on each side, 4 in each row. Eows oblique. 

 A row of single rudimentary calyces extends quite a distance below 

 the fully developed ones. The ventral calyces are the largest and 

 the dorsal the smallest. The proximal and distal rows bear reduced 

 numbers of calyces. 



The calyces are contiguous, the larger ones being 2 mm. high and 

 very obliquely placed, their walls covered with needle-like spicules 

 longitudinally arranged, and borders armed with an indefinite num- 

 ber of irregular points composed of groups of spicules. Each ten- 

 tacle bears a narrow band of small bar-like spicules on its dorsal 

 surface. These spicules do not resemble those figured by Kolliker. 



Tfte zooids are numerous on all parts of the rachis not occupied 

 by calyces or a narrow ventral median groove. Each zooid is sur- 

 rounded by a radiating fence of needle-like spicules projecting in 

 points. The zooids extend in a line alongside of the line of rudi- 

 mentary polyps described above. 



Color: The entire colony is white, in alcohol. 



Locality. —Station 5071; Ose Saki, S. 53.5° W., 2.6 miles; 57 

 fathoms. 



Type-locality. — Southeast of Ceram, west of New Guinea, 129 

 fathoms. 



The specimen described above agrees with the original description 

 except in the shape of the tentacular spicules. 



Genus TRICHOPTILUM Kolliker. 



Protoptilidfe with alternate calyces which have their margins 

 armed with 8 spines, dorsal zooids, and nimaerous spicules in polyps 

 and tentacles. 



