THE FAMILY MILIOLID^E ]07 



Soc. Cxeol. France,' ser. 3, vol. xxii. 1894, p. 296, pi. 

 xii. and text figure 1. 



The test in this species resembles Alveoliua 

 Hplurrica^ but with the internal arrangement of 

 chambers peculiar to Lacazina. The chamberlets 

 are small, with much secondary shell growth, as in 

 Flosculiua. Surface of the test pitted. Tertiary, 

 New Guinea. 



Sub-famil// 6. Keeamosph.eein.e. 



Test spherical, chambers in concentric layers. 



Genus KeramosjjlicEra, Beady. 



Test spherical, composed of a multitude of more 

 or less irregularly shaped chamberlets arranged in 

 concentric layers. This form appears to be iso- 

 morphous with the hyaline Gijpsina cjlohiilus. 



Example. — K. Murray i, Brady, 'Ann. and Mag. 

 Nat. Hist.' ser. 5, vol. x. 1882, p. 242, pi. xiii. 



In transverse section the test appears somewdiat 

 like that of Orhitolites in its arrangement of the 

 chamberlets, but it is more irregular, and the pores 

 on the surface communicate with each chamberlet 

 obliquely instead of by pores disposed normally to 

 the surface of the test, as in Orhitolites. 



Only two specimens of this interesting porcella- 

 nous type were found by Mr. (now Sir John) Murray 

 during the ' Challenger ' expedition. They came 

 from the deposit of Diatom Ooze, at some distance 

 off: the S.W. of Australia, from a depth of 1,950 

 fathoms. Becent. (Plate 4, fig. H.) 



