' 



CO. 1923. DESCRIPTIONS OF PACIFIC ALCYONARIA—NUTTINQ. 91 



CERATOISIS PAUCISPINOSA Wright and Studer. 



Ceratoisis paucispinosa Wright and Studer, Challenger Keports, the Alcyonaria, 

 1889, p. 28. 



A few fragments are ascribed to this species. The largest is a 

 denuded axis 13 cm. long; longest joint, 2.4 cm.; diameter, 1.6 mm. 

 The horny joints are very short. 



Another fragment has a few polyps. The calyces are long and 

 slender, curved basally so as to lie along the sj^em facmg upward. 

 Length to tip of spines, 6.5 mm; diameter at margin, 1.8 mm.; near 

 base, 1.3 mm. There are a few remarkably long pointed spines 

 iymg vertically in the polyp walls, some of which have their points 

 projecting beyond the margin, forming a very conspicuous crown of 

 points. One of these spicules in 4.5 mm. long. Similar spicules 

 Iymg loose in the bottle measure 5 mm. in length. 



The coenenchyma of the stem contains a number of sparsely 

 scattered comparatively minute bar-like spicules. 



Locality.— Station 5083; Omai Saki Light, N. 23.5° E., 34.5 miles; 

 624 fathoms. 



General distribution. — Type-locality, Hyalonema Grounds, off 

 Japan, 345 fathoms; Hawaiian region (Nutting); Dutch East Indies 

 (Nutting). 



CERATOISIS PHILIPPINENSIS Wright and Studer. 



Ceratoisis philippinesis Wright and Studer, Challenger Reports, the Alcyonaria, 

 1889, p. 27. 



A number of large fragments with the coenenchyma and calyces well 

 preserved are included in the U. S. Fisheries steamer Albatross 

 material. This species breaks so easily at the internodes that it is 

 unlikely that complete specimens will be secured by dredging. 



There is no evidence of branching, and it is likely that in life the 

 species is a very beautiful rod-Uke form. 



The largest fragment is 13 cm. long and has a diameter of 1.7 

 cm., including the calyces. One large node is 5.2 cm. long and 4 mm. 

 in diameter, mthout the coenenchyma. The surface is smooth, with 

 an appearance of longitudmal striation, and the axis is hollow except 

 at the ends. 



The cal^^ces are densely aggregated on all sides of the stem, not in 

 definite verticils but in about ten very irregular longitudinal rows; 

 and quite contiguous. 



The individual calyces have long cylindrical bodies tapering below 

 into a thick pedicel. Sometimes they are as much as 1 cm. high to 

 the top of the mass of infolded tentacles. Around the margin there 

 is a regular series of rod-Uke wliite spicules alternatmg with the eight 

 tentacle bases, but not projecting appreciably beyond the tentacles. 

 These spicules are sometimes 3 mm. long and are entirely rod-like in 



