No. 1624. DESCRIPTIONS OF HA WAIIAJST ALCYONARIA -NUTTING. 557 



at the base of each tentacle there are a few spicules arranged e)i chev- 

 ron, and then a few longer and more slender spicules which are outside 

 of the latter, and curved to meet each other so that their distal ends 

 are parallel to the axis of the tentacle; the whole forming a rather 

 high conical operculum. All of the spicules are covered densely with 

 minute verrucse so small as to appear as mere granules. 



Color. — Coral red. 



Type.— Cdii. No. 25318, U.S.N.M., Allmtross Station 3935, off Lay- 

 san Island, 59-79 fathoms. 



This species differs from S. kdlUkeri in having much more ex- 

 serted and more crowded calyces. 



Order PENNATULACEA. 



Colonial forms not permanently attached to the bottom or to other 

 objects. Stem with an axial cavity which is often longitudinally sub- 

 divided by thin partitions and contains an axis cylinder. Spicules 

 needle-like or bar-like, never warty. Both polyps and siphonozoids 

 are generally present. 



Family PENNATULIDAE Kolliker. 



Axis and pinnae present, the latter large, and without calcareous 

 ray-like bodies. Colony feather-shaped. 



Genus PENNATULA Linnasus (part). 



The leaves or pinnae have spicules scattered over their entire sur- 

 face, j ;,; .. _ yX^l^ k >-.kiJ:-'^- T ■\ ^- • 

 r PENNATULA SANGUINEA, new species. 



Plate XLI, figs. 7 and 8. 



Colony about 100 mm. long. Stem slightly expanded or swollen at 

 base, 28 mm. long. Rachis 63 mm. long. Leaves about eighteen on 

 each side, increasing in length from below upward to near the distal 

 end, and then diminishing rapidly. Longest leaf about 32 mm. in 

 length, with six polyps ; an elongated triangle in shape with a maxi- 

 mum breadth of 3f mm. Calyces rather prominent, cylindrical, ob- 

 liquel}^ placed so as to point toward distal end of leaf ; height, on the 

 longest side, 2^ mm. ; diameter, 1\ mm. ; margin with eight prominent, 

 acute teeth composed of numerous spicules. 



Spicules. — Needle-shaped, crowding the entire surface of leaves 

 and calcyces, crisscrossed in every direction. Those in calcyces longi- 

 tudinally arranged in distal part and crisscrossed in proximal portion. 

 Polyps without tentacular spicules. 



