232 CEYLON PEARL OYSTER REPORT. 



in the deeper ones. It is common, however, in all. Previously recorded from the 

 Indian Ocean (2). 



Orbitolites duplex, CARPENTER. 

 Occurs rarely at Stat. LVII a new record for Indian seas. 



Alveolina melo (FICBTEL and MOLL). 



This is exceptionally common in the shallow-water deposits, and makes up a large 

 percentage of the material. In most cases also the size is above the average, the 

 length reached being 22*5 millims. It occurs at Stats. LXIV., LVL, LVIII. ; off 

 Trincomalee and Chilaw ; but is especially common in the deposit from Stat. LXVIII. 



Alveolina boscii (DEFR.). 



This is frequent in the same deposits as the species A. melo. Both have been 

 previously recorded from the Indian Ocean (2). 



. FAMILY : ASTRORHIZID.E. 



Technitella legumen, NORMAN. 



Of very rare occurrence from the Gulf of Manaar a new record for the 

 Indian seas. 



Saccammina spherica, SAKS. 



Of rare occurrence at Stats. LVI. and LVIII. previously recorded from Indian 

 seas (2). 



Rhizammina, sp. ? 



One specimen from Gulf of Manaar. The species /?. indivisa has been previously 

 recorded from Indian seas (2). 



Sagenella frondescens, BRADY. 

 Of rare occurrence in deposits off Chilaw. This is a new record for Indian seas. 



FAMILY : LITUOLID^. 



Reophax difflugiformis, BRADY. 



Occurs somewhat frequently in Gulf of Manaar previously recorded from Indian 

 seas (2). 



Haplophragmium canariense (D'ORB.). 



Only one specimen in material from Stat. LVIII. previously recorded from Indian 

 seas (2). 



