142 Transactions of the Society. 



Cristellaria echinata (d'Orbigny). 



" Nautili echinati sive Papillosi, d circumradiati " Soldani, 1780, 

 Saggio Oritt., p. 98, pi. i, fig. 6. ; 1789, Testaceographia, vol. i, pt. i, 

 p. 65, pi. lix, figs, qq, rr. 



Cristellaria ecJiinata Brady, 1884, Chall. Rept., p. 554, pi. Ixxi, figs. 1-3. 



One small example in poor condition. 



Cristellaria convergens Bornemann. 



Cristellaria convergens Bornemann, 1855, Zeitschr. d. deutsch. geol. 



Gesellsch., vol. vii, p. 327, pl. xiii, figs. 16, 17. 

 C. convergens Brady, 1884, Chall. Rept., p. 546, pl. Ixix, figs. 6, 7. 



One specimen is typical, and the other has a tendency towards 

 C. gibha d'Orbigny. 



Cristellaria rotnlata (Lamarck). 



Lenticulites rotulata Lamarck, 1804, Ann. Mus., vol. v, p. 188, No. 3 ; and 



1806, vol. viii, pl. Ixii, fig. 11. 

 Cristellaria rotulata Brady, 1884, Chall. Rept., p. 547, pl. Ixix, fig. 13. 



A few occur. They are rather stoutly built. 



Cristellaria cultrata (Montfort). 



Bohulus cultratus Montfort, 1808, Conchyl. System, vol. i, p. 214, 54^ genre. 

 Cristellaria cultrata. Brady, 1884, Chall. Rept., p. 550, pl. Ixx, figs. 4-8. 



Excellent examples occur. A few have a tendency towards 

 C. orbicularis (d'Orbigny). 



There is one magniticent specimen, measuring about three- 

 sixteenths of an inch in diameter. 



Cristellaria orbicularis (d'Orbignyj. 



Bohulina orbicularis d'Orbigny, 1826, Ann. Sci. Nat., vol. vii, p. 288, pl. xv, 

 figs. 8, 9. 



B. imperatoria d'Orbigny, 1846, For. Foss. Vien., p. 104, pl. 5, figs. 5, 6. 

 -Cristellaria orbicularis Brady, 1884, Chall. Rept., p. 549, pl. Ixix, fig. 17. 



A single example. 



Cristellaria crq,ssa d'Orbigny. 



Cristellaria crassa d'Orbigny, 1846, For. Foss. Vien., p. 90, pl. iv, figs. 1-3. 



C. crassa Brady, 1884, Chall. Rept., p. 549, pl. Ixx, fig. 1. 



This solitary specimen is not typical, but, judging by the 

 number of chambers and the thickness of the test, it appears to be 

 nearer to C. crassa than to C. gibba. 



Amphicoryne Schlumberger. 

 AmpJiicoryne bradyi (Silvestri). 



"Intermediate specimen withVaguline commencement and final Nodosarian 

 chamber," Brady, 1884, Chall. Rept., explanation of plate, pl. Ixvi, 

 fig. 20. 



