. An account of the alcyonarians collected by the Royal Indian marine survey ship Investigator in the Indian Ocean. Alcyonaria. 107 small, flat, smooth, irregular spindles. The larger vary from 0-36 to 22 mm. in length, and from O-QG to O'lo mm. in breadth. (/;) The stalk contains spindles, three-rayed and tripod forms. All are covered with very rough branched warts. Several of the spindles show a division into two or three parts at one end. Si)indles average 072 mm. in length by 009 mm. in breadth. The three-rayed forms, which may have a ray divided into two or three, measure up to 0"6 m
. An account of the alcyonarians collected by the Royal Indian marine survey ship Investigator in the Indian Ocean. Alcyonaria. 107 small, flat, smooth, irregular spindles. The larger vary from 0-36 to 22 mm. in length, and from O-QG to O'lo mm. in breadth. (/;) The stalk contains spindles, three-rayed and tripod forms. All are covered with very rough branched warts. Several of the spindles show a division into two or three parts at one end. Si)indles average 072 mm. in length by 009 mm. in breadth. The three-rayed forms, which may have a ray divided into two or three, measure up to 0"6 mm. in length, and the tripods 0'48 mm. There are in addition small, flattened, irregular spindles. Colour—Stalk, stem and branches white to semi-transparent (or bluish- milky-white) ; polyjis white with pinkish-red spicules at the base ; Stutzbiindel pinkish-red, that colour predominating more on the outer polyps. Locality : Padaw Bay (Dr. Anderson). Dendronephthya quadrata, Henderson. This species is represented by a complete specimen which measures 5'6 cm. in height and about 3"7 cm. in greatest breadth. The stalk is short, 2 cm. in length, thick and rigid, and gives off from its base a number of stolons. It is marked by a number of rings and has a wavy apijearance. The polyparium is large, greatly flattened in one plane, almost regular in outline, and with an even un- broken surface. It is more or less quadrilateral in shape with the corners rounded ott' and the sides slightly ir- regular, and consists of a number of branches which vary little in size, the upper being slightly the longer, and are most developed in the j)lane of flattening. The branches are short and thick, and by repeated division give rise to the blunt stump-like polyp-bearing twigs. In addi- tion to the larger branches numerous smaller branches arise on the lateral surface of the stem. The polyps are arranged in groups of four to twenty, and these again into still larger groups. In the groups all th
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