Genus Koroeides Studer. 



Kor 'aides Studer. Versuch eines Systemes der Alcyonaria, 1887, p. 30. 



Kor aides Wright and Studer. Challenger Reports, the Alcyonaria, 1889, pp. XXXV, 168. 



Korceides Nutting. Hawaiian Alcyonaria, 1908, p. 569. 



The original definition, which has not been materially altered by subsequent writers so 

 far as I have seen, it as follows: (Taken from WRIGHT and STUDER, 1889). 



"The upright colony branches in one plane; the polyps form wart-like verrucse, which 

 are given off mainly from the sides of the somewhat flattened branches, leaving an interspace 

 free. The spicules of the coenenchyma are large broad spindles and polygonal, often triangular 

 discs. These latter are closely approximated to one another, and form a pavement-like outer 

 layer in the coenenchyma. The calyces are thickly covered with polygonial scales, and the 

 tentacles also contain broad smooth spicules. The whole habit, and even the character of the 

 spicules, recall the genus Acis. 



The axis is colorless and consists of closely intercalated calcareous spindles inclosed in a 

 horny fibrous substance, which remains and preserves the form of the axis after decalcification". 



The type of the genus Korosides is K. koreni W. and S. Two other species have been 

 described, K. gracilis \Yhitelegge and K. pallida Hiles, both of which THOMSON and STIMPSON * 

 regard as synonyms of K. koreni. 



i. Korceides koreni Wright and Studer. (Plate VI, figs. 



, 



Kor aides koreni Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. 169. 

 Koroeides koreni Thomson and Simpson. Alcyonarians of the Indian Ocean, II, 1909, p. 167. 



Stat. 117. io'.5 N. 122 56' E., 80 meters. Sand and coral. 



Colony incomplete, very fragile, strictly flabellate, with flattened branches, 7.5 cm. high 

 and with a spread of 14.5 cm. The main stem is round proximally, 3 mm in diameter and 

 8 mm. high to first branch. At that point it sends off two opposite long tortuous branches 

 which are round proximally and flattened distally. Their proximal branchlets are broken off, 

 with one exception; but they fork distally into compound branchlets which are slightly flattened. 

 The main stem is broken off 3.4 cm. above its base and is distinctly flattened above the first 

 pair of branches, having a section of 3.3 X 2 mm. It gives off two short stubs and one 

 compound branch on one side and one compound branch on the other. The compound branches 

 are flattened, tortuous, and give off rudely alternate branchlets, two of which are compound 

 and anastomose with branches below. The terminal twigs are really round, but appear to be 

 flattened on account of the lateral disposition of the calyces, which are very uneven in distribution. 



The individual calyces are quite variable in size and shape. When the polyp is fully 

 retracted the calyx is almost entirely included. The usual form of the calyx, however, is a 

 very short tube consisting of a fence of upright spicules with their points projecting in a series 



1 Alcyonarians of the Indian Ocean, II, 1909, p. 168. 



