4 FORAMINIFERA OF THE CRAG. 
It is fossil also in New Zealand (‘ Novara-Expedition, Geol. Theil,’ 2 Abtheil., 
p. 180). 
Reuss describes and figures other Cornuspire (C. angigyra, ‘Denks. Akad.,’ Wien., 
vol. i, p. 370, pl. 46, fig. 19; C. polygyra, ‘Sitz. Akad.,’ vol. xlviii, p. 39, pl. 1, fig. 1; 
C. Bornemanm, |. c., fig. 3; C. rugulosa, ‘ Sitaungsb. Akad.,’ vol. xviii, p. 222, pl. 1, 
fig. 1; C. Reussi, Bornemann, ‘ Denks. Akad.,’ vol. xxv, p. 121, pl. 1, fig. 10), from the 
Tertiary beds of Germany. ‘These, however, as well as C. Archimedis and C. elliptica, 
Stache, ‘ Novara-Expedition, Geol. Theil.,’ 2 Abth., p. 180, pl. 22, figs. 1 and 2, can only 
be regarded (zoologically) as varieties of C.foliacea. Some, like C. Hoernesi, Karrer, may 
prove to be Zrochammina incerta. 
Genus—Muioua, Lamarck. 
Serpvuta, Linné, Walker and Jacobs, Adams, Maton and Rackett. 
VerMIcuLUM, Montagu, Fleming, Macgillivray, Thorpe. 
MiuiouitEs, Lamarck, Parkinson. 
Mitioxa, Lamarck, Parkinson, Brown, Blainville, Schultze (in part). 
Mixioiina, Williamson (in part). 
Miuioia, Parker and Jones, Carpenter, Brady, &c. 
General characters.—Shell, oval or elliptical, composed of segments folded on each other 
from end to end, in one plane or more, each successive segment larger than the preceding 
one, and embracing the earlier segments to a greater or less extent. Shell, without true 
septation, but having a partial constriction in the angle at each change of the direction 
of growth. Colour, white, opake. Pseudopodial aperture variable in form, terminal. 
Upon the mode and extent of the overlapping of the consecutive chambers depends the 
artificial division of the genus into the subgenera Uniloculina, Biloculina, Triloculina 
(and Cruciloculina), Quinqueloculina, and Spiroloculina. 
Subgenus—Birocuuina, D’ Orbigny. 
General characters.— Having only two chambers visible externally, each succes- 
sive chamber entirely embracing the previous one on the same side. 
