*690 ' THETIS " SCIENTIFIC RESULTS. 



The calyx scales are mostly rounded or oval "ctenoid" forms, 

 with a distinct nucleus round which are grouped numerous warts. 

 The outline is usually entire for about two-thirds of the circum- 

 fei'ence, and the clear space between the central warted portion 

 and the edge is quite smooth, without any hint of ridges or 

 flutings. The following measurements were taken of length and 

 breadth in millimetres— -272 x -238 ; -254 x -153 • -221 x -221 ; 

 •119 X -102. The opercular scales are isosceles triangles (-34 x 

 •17 mm.); the margin is entire for the greater part of the two 

 longer sides, and all the upper portion of the scale is smooth ; the 

 nucleus is situated near the base of the triangle, and is surrounded 

 by numerous warts. The spicules of the coenenchyma are small 

 scales and irregular bodies — -102 x -085; •OSS x -051; -068 x •068; 

 •051 X •034 mm. 



The colour of the colonies is pale brown to cream. 



This species agrees in many ways with the description of Cali- 

 gorgia eLegans (Gray), given by Kinoshita, ^ but is distinguished 

 from that species by the entire margins and smooth borders of 

 the scales, and the smaller number of scales in the abaxial rows 

 of the polyp calyx. It may also be noted that our specimens 

 never have as many as eighteen polyps to a whorl, nor are the 

 polyps ever arranged irregularly on the stouter branches, as in 



■ Caligorgia elegans (Gray). 



Family GOKGONID^. 



'Genus LEPTOGORGIA, Milne-Edwards (emend. Verrill). 

 LEPTOGORGIA, spA 



A single specimen is referable to the genus Leptogorgia, but it 

 as small and incomplete, and we do not feel justified in saying 

 more than that it is in the neighbourhood of Leptogorgia alba, 

 Verrill, and Leptogorgia Jlexilis, Verrill. 



The height of the colony is 9 cm., with an almost constant 



• diameter of 2 mm. Four simple branches are given off along one 



, side of the stem at intervals varying from 3^5 to 8 mm. Both 



stem and branches are somewhat flattened. The polyps are 



arranged laterally ; their openings are very small and incon- 



: spicuous; and they are completely retracted into the ccenenchyma. 



The spicules are colourless, double spindles — "132 x •035 mm.; 



•091 X •046 mm.; '036 x -03 mm.; and a few crosses, '068 x ^045 



■ mm. 



The colour of the colony is pale fawn. 



Locality. — Between Port Jackson and Tuggerah, N. S. Wales. 



» Kinoshita— Primnoidse of Japan, Journ. College Sci. Tokyo, xxiii.» 

 ,1908. 



