Recent and Fossil Foraminifera. 315 



The finding in an English shore gathering of this unique and 

 well developed specimen of a species known hitherto only from the 

 Malay Archipelago, represents possibly the greatest surprise of the 

 whole collection, and illustrates the glorious uncertainty of work 

 among the Foraminifera. The specimen has been submitted to 

 Mr. Millett, who agrees with our identification. Similar abnormal 

 occurrences are well known to all rhizopodists, and have sometimes 

 been regarded as due to the use of sieves which had not been 

 effectually cleaned after use with other material, but such an objec- 

 tion is discounted in this instance by the fact that the sieves used 

 for the Selsey material were new when first taken into use and 

 have been religiously preserved for Selsey gatherings only. 



Millett's specimens were from various localities in the Malay 

 Archipelago, where it is one of the most typical and abundant 

 species. We have met with it in anchor mud from Singapore, but 

 the specimens were much smaller than our Selsey find. 



338. Bolivina eoc&nia Terquem. 

 (Plate X. figs. 6, 7.). 



Bolivina eocaenica Terquem, 1882, Mem. Soc. Geol. France, ser. 3, vol. ii. 



Mem. 3, p. 148, pi. xv. fig. 18 a, b. 

 Bolivina gibbera Millett, 1894, Trans. E. Geol. 8oe. of Cornwall, p. 2, figs. 1, 2. 



We have one perfect fossil specimen, which agrees very closely 

 with Millett's figure and description except in one or two minor 

 points. The sutures in our specimen are not so deeply sunk as in 

 Millett's figures, with the result that the chambers appear less 

 inflated than in the St. Erth specimens. The aperture in ours is 

 circular, as in Millett's fig. 2. 



Millett's record was from the Pliocene beds of St. Erth in Corn- 

 wall — " frequent." His description of the test is as follows : "Test 

 ovoid, compressed, margin obtuse, lobulated, segments few and in- 

 flated, sutures deeply sunk, surface minutely punctate, aperture 

 panduriform, sometimes circular, surrounded by a thickened lip. 

 and situated in a more or less produced neck. This species is 

 nearly allied to B. textilarioides." 



Terquem in ' Les Foraminiferes de l'Eocene de Paris ' has figured 

 under the name of Bolivina eocaenica a form which we take to be 

 identical with Millett's species. His description is as follows : 

 "Shell oval, compressed, smooth, not perforate, anteriorly broad- 

 ened, posteriorly narrowed and obtuse, rounded as to the periphery 

 and furnished with a blunt keel, composed of few chambers, rounded, 

 increasing regularly, the last two being triangular ; aperture at the 

 side of the last chamber, occupying its entire breadth, funnel shaped 

 (" panduriform " — Millett) with a thick lip, at the bottom of which 

 is an oval opening." 



it will thus be seen that the principal difference between the 



