i6 



well be ascertained on account of there being no line of demarcation between their walls and 

 the general surface of the ccenenchyma. Another specimen, from Station 299, has more pro- 

 minent verrucae, a typical one measuring 1.2 mm. in height and 1.5 mm. in diameter at base. 

 It is papilliform, inclined distally and has a terminal aperture. The polyps are very small and 

 have a few spicules on the their upper parts, included the tentacle bases. 



Spicules. These are nearly all very compact double heads densely covered and with 

 a very narrow girdle. There are also many stout spindles approaching an oval form and without 

 any girdle. A few clubs are seen and an occassional small slender spindle probably from 

 the polyps. 



Color. The specimen described is a dull, dark red. Others are a creamy white, the 

 species being apparently dichromatic. 



General distribution. This species is widely distributed in the Indian Ocean and 

 the East Indian region in general, Chinese Seas, and Australian region. 



The largest specimen of this species in the collection is from Station 273. It is one 

 meter in diameter and creamy white in color. 



Genus Juncella Valenciennes. 



Juncella (in part) Valenciennes. Comptes rendus a 1'Acad. Paris, XLI, p. 14. 



Juncella Milne Edwards et Haime. Histoire Naturelle des Coralliaires, I, 1857, p. 186. 



Juncella Kolliker. Icones Histiologicae, II, 1865, p. 140. 



Juncella Studer. Monatsbericht der Konigl. Akademie der Wissenschaften zu Berlin, 1878, p. 655. 



Juncella Versuch eines Systemes der Alcyonaria, 1887, p. 67. 



Juncella Wright and Studer. Challenger Reports, the Alcyonaria, 1889, p. LXV. 



Juncella Studer. Alcyonarien aus der Sammlung des Naturhistorischen Museums in Lubeck, 



1894, p. 1 1 6. 



Juncella Delage et Herouard. Traite de Zoologie concrete, II, 2, 1901, p. 429. 

 Juncella Hickson. The Alcyonaria of the Maldives, 1905, p. 818. 

 Juncella Thomson and Simpson. Alcyonaria of the Indian Ocean, II, 1909, p. 269. 



It is very difficult if not quite impossible to distinguish surely between the genera 

 Scirpearea and Juncella of the earlier writers. The original definition of the genus Juncella 

 is as follows : 



"A tiges droites en baguettes, couvertes de cellules polypiferes eparses sur la sclerobase". 



MILNE EDWARDS and HAIME (1857) give practically the same definition, somewhat con- 

 densed. They include in the genus Juncella jimcea Val., J. vimen Val. (= Gorgonia Juncea 

 Ellis and Solander), J. hystrix Val., and J. elongata (Pallas). 



KOLLIKER (1865) defines the genus- as indicated in the following translation: 



"Axis with alternating layers of horny and calcareous material. Part of the surface -of 

 the stem also pure limestone. Calyces reasonably well developed. Spicules of the ccenenchyma 

 partly warty double heads and partly clubs and double stars .05 to . i mm. long. Polyp spicules 

 small spindles". This writer includes in the genus Juncella juncea (Esper) and J. gcmmacea 

 .(Valenciennes). 



GRAY (Proceedings Zoological Society of London, 1859) divides the genus into several 



