REPORT ON THE FOR AMINIFE R A. 
539 
Cristellaria reniformis, d’Orbigny (PL LXX. fig. 3, a.b.). 
Cristellaria reniformis, d’Orbigny, 1846, For. Foss. Yien., p. 88, pi iii. figs. 39, 40. 
In typical examples of Cristellaria reniformis the test is somewhat more compressed 
than appears from the figure, and the earlier segments more distinctly evolute. The species 
is closely related to Cristellaria compressa, d’Orbigny, with which, as already stated, it 
is connected by passage-forms such as that represented in PI. CXIY. fig. 16. 
As a recent Foramiuifer, Cristellaria reniformis is best known by North Atlantic 
specimens, from depths of 300 to 1000 fathoms, but it has also been found sparingly in 
the South Atlantic, 1900 fathoms ; in the South Pacific, 150 fathoms to 1100 fathoms ; 
aud in the North Pacific, 2050 fathoms. 
D’Orbigny’s specimens were from the Miocene of Baden near Vienna. 
Cristellaria schloenbachi, Eeuss (PL LXVII. fig. 7). 
Cristellaria schloenbachi, Reuss, 1862, Sitzungsb. d. k. Ak. Wiss. Wien, vol. xlvi. p. 65, 
pi. vi. figs. 14, 15. 
This is a mere variety — one of the numerous passage-forms between Cristellaria 
crepidula and the smooth Vaginulince. 
It has been- observed off Bermuda, 435 fathoms; off Culebra Island, 390 fathoms; 
and off Paine Island, 155 fathoms. 
Eeuss’s specimens were obtained from various Upper Cretaceous deposits of North 
Germany. 
Cristellaria lata, Cornuel, sp. (Pl. LXVII. fig. 18, a.b). 
Marginulina lata, Cornuel, 1848, Mem. Soc. g£ol. France, ser. 2, vol. iii. p. 252, pl. i. figs. 
34-37 
Planularia pauperata, Jones and Parker, i860, Quart. Journ. Geol. Soc., vol. xvi. p. 454, pl. 
xx. fig 39. 
Cristellaria simplex, Terquem, 1863, Foram. du Lias, 3‘ “ e Mem., p. 203, pl. ix. fig. 15. 
Planularia 'pauperata, Brady, 1867, Proc. Somerset. Arch, and Nat. Hist. Soc., vol. xiii. p. 110, 
pl. ii. figs. 24, 25. 
Cristellaria pauperata, Blake, 1876, The Yorkshire Lias, p. 465, pl. xix. fig. 12. 
A broad, few-chambered, complanate variety ; only separable by comparative 
characters from Cristellaria crepidula. 
Occurs off East Moncoeur Island, Bass Strait, 38 fathoms. 
The broad smooth Cristellarians, of which this is a subordinate modification, are better 
known as Mesozoic fossils (Trias, Lias, and Cretaceous), than in the living condition. 
