Echinoidea from the Kerimba Archipelago. 39 



6. Chaetodiadema granulatum, Mortensen. 



Mortenseri, Vidensk. Medd. (1903). 



De Meijere, Die Echinoidea der Siboga-Expedition, Mon. xliii., Resultats des 

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



Locality. — XII L, Pemba Bay, mud, 10 to 20 fathoms. 



Three specimens are referable to this little known species, although 

 I have had to rely on Mortensen'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 consequently show practically no 

 coloration. 



Diameter. 



Height. 



Srjines. 



Dia. Act. sys. 



D 



a. Abact. 



sys. 



Dia. Anal sys 



55 mm. 



11 5 mm. 



12 mm. 



8 - 5 mm. 





17 mm 





6 - mm. 



45 mm. 



10'5 mm. 



24 mm. 



8 - 5 mm. 





14 mm. 





5"5 mm. 



43 mm. 



10-0 mm. 



21 mm. 



90 mm. 





15 mm. 





4 - 5 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., Ibo 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. 



Distribution. — Indian and Pacific Oceans. 



8. Echinostrephus molare, A. Ag. 



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



Three small specimens from no precise locality. 

 Distribution. — Indian and "Western Pacific Oceans. 



9. Microcyphus maculatus, Agass. 



A. Ag., Rev. Ech., p. 466. 



Locality. — II., Maiyapa Bay, sand, mud, and coral, 10 fathoms. 



