166 THE FOEAMINIFEKA 



in Germany and England, of about the period of the 

 Gault. (Plate 9, fig. B.) 



Genus Cuneolina, D'Oebigny, 



Test textularian, complanate ; compressed in a 

 direction at right angles to the normal plane, so that 

 the two alternating series of segments appear on the 

 narrow lateral edges. Cretaceous. 



Example. — C.jjavonia., D'Orbigny, ' Foram. Foss. 

 Yienne,' 1846, p. 253, pi. xxi. figs. 50-52. 



This interesting species is the sole representative 

 of the genus, and was described by D'Orbigny from 

 the Lower Chalk, near the mouth of the Charente. 

 Although the arrangement of the segments is dis- 

 tinctly textularian, the aperture, instead of being 

 slitlike, as we might expect, is represented by a row 

 of pores at the junction of the penultimate and 

 last segments. It is not unusual, however, in 

 other genera to find the same type exhibiting a 

 diversity of character in this respect. For example, 

 in the genus Peneroiolis some of the forms which 

 are complanate have a similar row of pores on the 

 apertural plane, whilst the stouter kinds have a slit- 

 like or branchinQ- orifice. 



"■td 



Genus Verneuilina, D'Oebigny. 



Test triserial, with a textularian aperture. Loiuer 

 Cretaceous to Becent. 



Example. — V. sjrimilosa, Eeuss, ' Denkschrift d. 

 k. Ak. Wiss. Wien,' vol. i. 1849, p. 347, pi. xlvii. 

 figs. 12 a-c. 



