THOMSON AND MACKINNON — STOLONIFEEA, ETC, 173 



10. Cespitularia ccerulea, May. (Plate 12. fig. 5.) 



For descriptions see : — 



May: Jeuaische Zeitschr. Naturwiss. xxxiii. 1899, p. 90, pi. 1. fig. 10. 

 Thomson and Henderson : Proc. Zool. Soc. 1 906, p. 414. 



Two specimens agree in the main with May's diagnosis of Cespitularia ccerulea, in 

 having pinnules in one row on each side of the middle line of the tentacles, the polyps 

 about 4 mm. long (without the tentacles), and the tentacles from 2-5-3 mm. long. 

 There are no spicules. The size of the larger colony is 10 cm. X 6'5 cm. It is 

 remarkably turgid. The original colour was a vivid grass-green, but in spirit this has 

 faded to cream. 



Locality. Cargados Carajos, 20-25 fms. 



Previously recorded from the Indian Ocean (Kokotoni, near Zanzibar). 



11. Cespitularia mollis, Brundin. 

 Por description see : — 



Brundin : Bihang K. Svensk. Vet.-Akad. Handl. xxii. No. 4, 1896, p. 4, pi. 1. fig. 1, pi. 2. fig. 1. 



A number of specimens, delicate in texture, white to light brown in colour, with 

 thimble -like branches densely covered with polyps, agree closely with Brundin's 

 description. 



Locality. Praslin Reef; Cargados Carajos Eeef ; and Coetivy. 



Previously recorded from Pacific Ocean (Korean Straits), 120 m. 



Family AlcyonidaB. 



Genus ALCYONIUM. 



12. Alcyonitim fulvum (PorskSl). 



According to Kukentlial = Sympodium fulvum (Forskal). 



For description see : — 

 Klunzinger: op. cit. p. 43, pi. 3. fig. 6 ; and May : Beitrage zur Systematik und Chorologie der 

 Alcyonaceen, Jenaische Zeitschr. Naturwiss. xxxiii. (1899), p. 53. 



Several encrusting colonies with polyps completely retractile in the meshes marked 

 by the large surface spindles. 



According to Kiikenthal (' Korallentiere des Eothen Meeres,' Festschr. Haeckel 

 (1904), p. 41), the structure of the polyps, their differences in size, their armature, the 

 form of the tentacles, and the arrangement of the pinnules, as well as the structure 

 of the coenenchyma and the connection of the j)olyps with one another, all suggest a 

 position in the genus Alcyonium, any likeness to Sympodium being pure convergence. 

 He supposes this form to be a species of Alcyonitim which has been expanded like a 

 membrane. 



Locality. Coetivy. 



Previously recorded from Tumbatu, East Africa ; Bed Sea. 



28* 



