ALCYONAHIA— J. A. THOMSON AND DOHIS L. MACKINNON. 171 



Pievio^iisly recorded from— Stiition 308, off Tom Bay, Pata- 

 gonia, 175 fathoms; 8. Atlantic, near S. American coast, Lat 

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



• PRIMNOELLA D1«TANS, Studer. 



Primnoella distans, Wright and Studer, Cliall. Rep., Zool xxxi 

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



.Stations 34, 42. 



There are a nunilierof liroken pieces of this delicate form, some 

 with the peculiar stolon-like basal attaclmients. Tiie lar"est 

 specimen is 155 cin. Ion;,'. The polyps are for the most parr in 

 opposite pairs, but wiiorls 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 liy Wright 

 and Studer. 



Previously recorded from -Station 23, otl' Sombrero, West 

 Indies, 450 fathoms; Station 122 a-c, off Pernambuco, 120-400 

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



Genus CALIGORGIA, Gray (emend. Sliider). 



CALIGORGIA LAEVIS, gp. nov. 



(Plate Ixv., fig. 1 ; pi. I.<viii., tig. 7 ; pi. Ixxx.) 

 Stations 47, 48. 



Several incomplete branching specimens, the largest with a 

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

 by a sponge. Branching is luxuriant and typically dicliotomous ; 

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

 thickest branches is 2'5 mm. Tiie axis is brown. 



The polyps are arranged in close whorls on tiie 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 lie formed, and eight is a common numi>er 

 on the thicker branches. The usual number of whoilsin a length 

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

 about 1 mm. Tln' mouths are directeil distally. 



The only complete longitudinal rows of calyx scales are the 

 abaxial and the al)axial-lateral ; iIkmo are never more than nine 

 overlapping scales in the abaxial rows ; thenuudjerin theubaxiul 

 lateral is more variable, but is usuallj' aliout six. Tlie 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. 



