27 



6. Chaetodiadema granulatum, Mortensen. 



Mortensen, Vidensk. Medd. U903). 



De Meijere, Die Echinoidea der Siboga-Expedition, Mon. xUii., Rfeultat.s de.s 

 Explorations du Siboga, 1904, p. 54 and plates. 



Localitij. — XIII., Pemba Bay, mud, 10 to 20 fathoms. 



Three specimens are referable to this little known species, although 

 1 have had to rely on Morteusen's and de Meijere's descriptions in default 

 of actual specimens for comparison. De Meijere's coloured plate {loc. cit. 

 xi. 101) does not agree accurately with his own description of the 

 species in tuberculation and spinulation. The specimens before me have 

 been in spirit for about a year and consecLuently show practically no 

 coloration. 



Dia. Act. sys. Oia. Abact. sys. Dia. Anal ays. 



8'5 mm. 17 mm. 6'0 mm. 



So mm. 14 mm. 5'5 mm. 



9 mm. 15 mm. i'i) mm. 



The " Siboga " specimens were collected in the Sunda and Banda Seas and 

 vicinity. 



7. Echinometra lucunter, de Blainv. 

 A. Ag., Rev. Ech., p. 431. 



Localities — IX., Ilio Bay, around Matemo Island, and between Matemo 

 Island and mainland. 



Several specimens, including a very young one. This species varies 

 considerably in colour when alive. A deep purple is commonest, but 

 individuals are often found of a dark olive-green and " black ones are 

 seen not rarely." It was found in the usual habitat, burrowing in coral 

 and coral rock. 



Distrihidion. — Indian and Pacific Oceans. 



8. Echinostrephus molaie, A. Ag. 



A. Ag., Rev. Ech., p. 457. 



Three small specimens from no precise locality. 

 Distribution. — Indian and Western Pacific Oceans. 



9. Microcyphas raaculatus, Agass. 



A. Ag., Kev. Ech., p. 466. 



Locality. — II., Maiyapa Bay, sand, mud, and coral, iu fathoms. 



