ALCYONARIA— J. A. THOMSON AND DORIS L. MACKINNON. 6b9' 



Previously recorded from — Station 308, o£F Tom Bay, Pata- 

 gonia, 175 fathoms; S. Atlantic, near S. American coast, Lat. 

 43° 56' 2" S., Long. 60'' 25' 2" W., 60 fathoms. 



PRIMNOELLA DISTANS, ^Siiic^er. 



Pnmnoella distans, Wright and Studer, Chall. Rep., Zool., xxxi.j, 

 1889, pp. 85, 86, pi. xvii., figs. 1, la. 



Stations 34, 42. 



There are a number of broken pieces of this delicate form, some- 

 with the peculiar stolon-like basal attachments. The largest 

 specimen is 15 "5 cm. long. The polyps are for the most part in 

 opposite pairs, but whorls of three occur. There are usually only 

 five transverse rows of scales in the abaxial rows on the polyp- - 

 calyx — never so many as seven to eight, as described by Wright 

 and Studer. 



Previously recorded from — Station 23, off Sombrero, West 

 Indies, 450 fathoms; Station 122 A-c, off Pernambuco, 1 20-400* 

 fathoms; Lat. 22^21' S., Long. 154*^ 7' 7" E., 550 fathoms. 



Genus CALIG-ORG lA, Gray (emend. Studer). 



CALIGORGIA LAEVIS, sp. nov. 



(Plate Ixv., fig. 1 ; pi. Ixviii., fig. 7 ; pi. Ixxx.) 

 Stations 47, 48.. 



Several incomplete branching specimens, the largest with a 

 height of 20 cm. In two cases the stem is partially overgrown 

 by a sponge. Branching is luxuriant and typically dichotomous ;- 

 the angle of the dichotomy is small. The diameter of the 

 thickest branches is 2*5 mm. The axis is brown. 



The polyps are arranged in close whorls on the thicker branches- 

 as well as on the slender twigs. The average number of polyps 

 in a whorl is four, but six sometimes occur, especially where a 

 dichotomy is about to be formed, and eight is a common number 

 on the thicker branches. The usual number of whorls in a length 

 of 3 cm. is twenty-two to twenty-four ; the length of a polyp is 

 about 1 mm. The mouths are directed distally. 



The only complete longitudinal rows of calyx scales are the 

 abaxial and the abaxial-lateral ; there are never more than nine 

 overlapping scales in the abaxial rows ; the number in the abaxial 

 lateral is more variable, but is usually about six. The adaxial 

 and adaxial-lateral rows are very incomplete, usually consisting of 

 two to three scales. The opercular scales are triangular and 

 pointed, the two abaxials being slightly larger than the others. 



