1 6 SiDEBOTTOM, Forauiinif era from tJie Island of Delos. 



Discorbina erecta, n. sp. (PI. 5, figs. 6, 7). 



Test free ; the contour is that of a tall cone, armed 

 with a short spine at the apex. The segments are inflated, 

 and very rugose, and arranged in about six convolutions, 

 the final whorl consisting of about six segments. The 

 sutural lines are wide and sunk. The inferior surface is 

 more or less rounded, and ornamented by radiating rib- 

 lets or granulose lines. The umbilicus is deeply sunk. 



The tests vary in the height of the spire and amount 

 of rugosity. In some few of the smaller, and presumably 

 younger tests, some of the segments are armed with a 

 small spine. Most probably the extreme rugosity of the 

 larger tests is the result of age. The majority of the 

 specimens are of a greyish-white colour, but a few are 

 tino-ed with brown. Frequent. This species occurs also 

 off the island of Rhodes. 



Discorbina elegantissima, n. sp. (PI. 5, fig. 8.) 



The test is composed (in the specimen figured) of 

 fully three convolutions, the final whorl consisting of four 

 seo"ments, which are more outspread than the others. 

 The segments are inflated, the earlier ones short, and the 

 later ones long and arched. The test is opaque (except 

 the last one or two chambers, which are semi-opaque), 

 and the colour a light yellow-brown ; it is also rugose. 



Six examples of this interesting and handsome 

 foraminifer were found. The one figured is much the 

 largest of the set. The superior surface has a sugary 

 look, and the chambers are lobulated, and the sutures 

 deeply sunk. The inferior surface is slightly convex, and 

 ornamented with radiating lines of minute tubercles. The 

 umbilical region is sunk and obscured by the shell growth. 



In the example figured, the last convolution is more 

 outspread than in the other ones. 



