2 SiDEBOTTOM Foraminifera from the Island of Delos. 

 MILIOLID^. 



NUBECULARIIN^. 



Nubecularia, Defrance. 



*Nubecularia tibia, Jones and Parker. 



Nubecularia tibia, Jones and Parker ('60), p. 455, pi. 

 20, figs. 48-51. N. tibia (J. & P.), Brady ('84), p. 135, 

 pi. I, figs. 1-4. 



Four specimens found with their initial chamber 

 intact. Eight single segments also occur. Very rare. 



*Nubecularia lucifuga, Defrance. (PL 2, figs. 1-4). 



Nubecularia lucifuga (Def), Brady ('84), p. 134, pi. i, 

 figs. 9-16. 



This variable species is present in great numbers. 

 A very pretty variety (see PL 2, figs, i, 2), and regular 

 in its habit of growth, has, when fully grown, three 

 chambers (occasionally four) covering the under surface. 

 The test is semi-translucent, of a milky blue colour and 

 polished. The aperture is an arched slit, running along 

 the furthermost edge of the last chamber, from the base 

 to halfway up the test. The complete shell consists 

 of about ten chambers. Mr. F. W. Millett points out to 

 me that this is an isomorph of Carpenteria. Frequent. 

 Another small variety (see PL 2, figs. 3, 4) is present, of 

 rather irregular lineal growth, and it always puts oti a 

 back chamber before commencing its lineal growth on 

 the opposite side. The orifices are at the end of a group 

 of small protuberances. Very rare. 



Nubecularia divaricata, Brady. (PL 2, figs. 5-7). 

 Nubecularia divaricata, Brady ('84), p. 136, pi. 76, figs. 

 II-I5- 



