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 Cornuspiree {C. angigyra, 'Denks. Akad.,' Wien.,' 

 vol. i, p. 370, pi. 46, fig. 19; C. polygyra, 'Sitz. Akad.,' vol. xlviii, p. 39, pi. 1, fig. 1 ; 

 C. Bortievianni, 1. c., fig. 3 ; C. rugulosa, ' Sitzungsb. Akad.,' vol. xviii, p. 222, pi. 1, 

 fig. 1 ; C. Beussi, Boniemann, 'Denks. Akad.,' vol. xxv, p. 121, pi. 1, fig. 10), from the 

 Tertiary beds of Germany. These, however, as well as C. Archimedis and C. eUiptica, 

 Stache, ' Novara-Expedition, Geol. Theil.,' 2 Abth., p. 180, pi. 22, figs. 1 and 2, can only 

 be regarded (zoologically) as varieties of C.foliacea. Some, like C. Hoernesi, Karrer, may 

 prove to be Trochammina incerta. 



Genus — Miliola, Lamarck. 



Sekpula, LinnS, Walker and Jacobs, Adams, Maton and Rackett. 



Vermicclum, Montagu, Fleming, Macgillivray, Thorpe. 



MiLlOLlTES, Lamarck, Parkinson. 



Miliola, Lamarck, Parkinson, Brown, Blainville, Schultze (in part). 



MiLiOLiNA, Williamson (in part). 



Miliola, 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. Colom-, 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 — Biloculina, D' Orbigny. 



General characters. — Having only two chambers visible externally, each succes- 

 sive chamber entirely embracing the previous one on the same side. 



