174 DR. J. PEARSON ON MARINE FAUNA [Feb. 1, 



aggregated on the three ambulacra. The papillae on the dorsal 

 surface are small. 



There are three polian vesicles, their respective lengths being 

 26 mm., 10 mm., and 6 mm. There is one madreporite. 



The twenty tentacular ampullae are extremely long — 30 mm. 



Text-fig. 15. 



Miilleria lecanora. Spicules, x 550. 



Both the respiratory trees are well developed. 



The dichotomous rods occur in groups, each rod has a length 

 of 26,! (text-fig. 15). 



General distribution. Philippines, Celebes, Bonin Is., Timor, 

 Mauritius, Fiji Is., Indian Ocean. 



MtiLLERiA mauritiana Quoy &, Gaimard. 



Holothuria mauritiana Quoy & Gaimard, 1833 (4). 

 Miilleria varians Selenka, 1867 (10). 



Miilleria mauritiana Semper, 1868 (11); Lampert, 1885(18); 

 Theel, 1886 (20) ; Sluiter, 1867(24), 1901 (28). 



Actinopyga mauritiana Bell, 1887 (22); Pearson, 1903 (29). 

 Miilleria mauritiana Koehler & Vaney, 1908 (31). 



Text-fig. 16. 



o 



Miilleria mauritiana. Various forms of spicules. 



A. Spinous rods in dorsal integument. X 430. 

 15. " Kosettes" in dorsal integument. X 450. 

 C. Spherical bodies in ventral integument. X 430. 



O.ie specimen from Station IX. Matemo Is. 



Length 175 mm. ; breadth 60 mm. 

 As in the Ceylon specimen examined by me, there is a well- 

 defined white patch on the ventral surface The deposits are 



