1910. J 



PROM MERGUI ARCHIPELAGO. 

 Text-fiff. 21. 



191 



/ .r. 



B 



Actinocucumis ti/pica. 

 A. Calcareous ring. X 7. 



r. = radial, i.r. = inter-radial. 

 I'. Plate-like spicules. X 750. 



Phyllophorus cebuensis Semper. 



Thyonidium cebuense Semper, 1868 (7); Lampert, 1885 (13); 

 Thee], 1886 (15). 



Phyllophorus cebuensis Ludwig, 1891 (19) ; Pearson, 1903 (21). 

 One specimen from Station XXV. Gregory Group. 



Length 15 mm. ; breadth 6 mm. 

 An extremely small and much contracted specimen, which agrees 

 in the main with the descriptions given by previous authors. 



Diameter of tables ... 85 p. 



Height of tables 85 /j.. 



General distribution. Philippines, Ceylon. 



MtJLLERiA echinites Jaeger. 



Mulleria echinites Jaeger, 1833 (2); Semper, 1868 (7); Theel, 

 1886 (15) ; Ludwig, 1887 (17); Sluiter, 1901 (20). 



One specimen from Station XXVIII. Riou Is. 

 Length 50 mm. ; breadth 30 mm. 



Agrees with Theel's description. 



The pedicels on the trivium are arranged on three longitudinal 

 ridges. 



The deposits vary in size fiom 29 p. to 44 /j. 



General distribution. Indian Ocean, Celebes, Sumatra, Fiji Is. 



