NAUXJLID.E. 
;i43 
Sciences et Belles-Lettres d.e Bruxelles, vol. xvii. et 1844), 
p. 614. 
1847. Xautilus ziczac, Prestwicli, “ On the probable Age of the Loudon 
Clay, &c.,” Quart. Journ. Geol. Soc. vol. iii. p. 4u4. 
1847. Xautilus zigzag, Geinitz, in Cams, L'eber die Auffinduug von 
Ueberresten des JBasUosaurus odev Zggoclon {Hgdrachos, von Kocb), 
P- 2- 
1849. Xaictilus lingulatus, Queustedt, Die Cepbalopoden, p. 59, Taf. ii. 
f. 12. 
1849. Aturia ziczac, Edwards, Monograph of the Eocene Mollusca, pt. i. 
Cephalopoda (Mon. Pal. Soc.), p. 52, pi. ix. 
1850. Xautilus {Clgmenia?) ziczac, Dixon, Geology and Fossils of 
the Tertiary and Cretaceous Formations of Sussex, pp. 110, 194, 
pi. viii. f. 19. 
1850. Megasiphonia zigzag, d'Orbigny, Prodr. de Paleont. Stratigr. 
vol. ii. p. 338. 
1850. Megasiphonia Alabamensis, d’Orbiguy, ibid. p. 338. 
1852. Xautilus lingulatus, Scho-ihautl, Aeues Jahrbuch fiir Min. &c. 
p. 164. 
1854. Xautilus ziczac, Morris, Cat. of British Fossils, 2nd ed. p. 306. 
1854. Xautilus {Aturia) ziczac, I’restwich, “On the Thickness of the 
London Clay, &c.,” Quart. Journ. Geol. Soc. vol. x. p. 412. 
1856. Xautilus zigzag, Bronu, Letha^a Geognostica, AuH. iii. Band iii. 
Th. vi. p. 596. 
1863. Xautilus lingulatus, Schafhiiutl, Slid-Bayerns Lethsea Geognostica 
— Der Kressenberg uud die siidlicli von ihm gelegenen Ilochalpen, 
pp. 217, 281, Taf. liii. If. 8, a, b. 
1865. Aturia ziczac, Deshayes, Descr. des Animaux sans Vertebres dh- 
couverts dans le Bassin de Paris, vol. iii. (Suppl. to ‘ Descr. des 
Coq. Foss, des Environs de Paris’), p. 628. 
? 1867. Xautilus ziczac, Fraas, Aiis dem Orient, p. 125. 
1872. Xautilus {Aturia) ziczac, Whitaker, Mem. Geol. Surv. of England 
and Wales, vol. iv. pt. i. Appendix, p. 589. 
1877. Xautilus Aturi, Barrande, Syst. Sil. de la Bohenie, vol. ii. pt. i., 
Texte, pt. iv. pp. 207, 340 ; Atlas, pi. cccclxxix. 
1882. Xautilus zizac, Abich, Geologie des Armenischen Hochlandes, 
i. Westiialfte Geol. Forsch. in den Kaukasischen Liindern, Theil 
ii. p. 298, Taf. vi. ff. 2, 2 2 6. 
1884. Aturia ziczac, Zittel, Haudbuch der Palaeontologie, Band i. 
Abth. ii. Lief. iii. p. 384. 
1884. Aturia lingulatus, Zittel, ibid. p. 384. 
1887. Aturia ziczac, Geinitz, “ Ueber Xautilus Alabamensis, Morton, 
Xautilus ziczac, Sowerby, und Xautilus lingulatus, v. Buck,” Neues 
Jahrbuch fiir Min. &c. Band ii. p. 54. 
Sp. Char. Shell siibventricose, compressed, flattened on the sides, 
very narrowly rounded on the periphery ; greatest width of the 
whorls in the umbilical region ; umbilicus closed. Septa approxi- 
