REPORT ON THE HETEROPODA. 
39 
1854. 
1855. 
1856. 
1857. 
1859. 
1860. 
1862. 
1866. 
1868. 
1873. 
1883. 
1883. 
Atlanta, H. and A. Adams, Gen. Moll., vol. ii. p. 91. 
,, Gegenbaur, Untersuch. Pterop. und Heterop., pp. 105-130, 214. 
„ Trcschel, Gebiss d. Schneck., vol. i. p. 42. 
„ Gray, Syst. Arrang. Moll. Brit. Mus., p. 134. 
,, Chenn, Man. Conch., vol. i. pp. 121, 122. 
„ Krohn, Beitrage Entwick. Pterop. und Heterop., p. 33. 
„ Macdonald, Trans. Roy. Soc. Edin., vol. xxiii. pi. ii. figs. 1, 1', 5g. 
,, Keferstein, Bronn’s Thierreich, vol. iii. pt. 2, p. 850, pi. lxviii. figs. 1, 2, 3, 4. 
Atalanta, Knocker, Proc. Zool. Soc. Lond., p. 616. 
Atlanta, Weinkauff, Cat. Europ. Meer. Conch., p. 44. 
„ Tryon, Syst. Struct. Conch., vol. ii. p. 350. 
„ Pischer, Man. Conch., p. 581. 
There is a very great similarity in the general construction and form of the species 
of this genus, hut on careful comparison certain features are recognisable which will 
distinguish them. They are to be separated chiefly on account of differences in the 
shells, as few observers have had the opportunity of seeing living specimens in their 
native element. The number, form, size, and position of the apical whorls constitute 
good distinguishing characters, but very careful observation and study are requisite. In 
determining the Challenger specimens I have had the very great advantage of comparing 
them with Eydoux and Souleyet’s collection in the British Museum. 
Atlanta per onii, Lesueur. 
1817. Atlanta peronii, Lesueur, Journ. de Physique, vol. lxxxv. p. 390, pi. ii. figs. 1, 2. 
1824. „ „ Blainville, Diet. d. Sci. Nat., vol. xxxii. p. 284, pi. lxviii. figs. 9, 9a 
(copy of Lesueur, reversed). 
1825. „ „ id., Man. Malacol., pi. xlviii. bis, figs. 9, 9a (same fig.). 
1827. ,, ,, Rang, Mem. Soc. Hist. Nat. Paris, vol. iii. p. 380, pi. ix. figs. 1, 2, 3, 7. 
1830. „ ,, Deshayes, Ency. Meth., vol. ii. p. 83. 
1830. „ „ Cuvier, Regne Anim., ed. 2. vol. iii. p. 68. 
1832. „ lieraudrenii (non Lesueur), Quoy and Gaimard, Yoy. “Astrolabe,” Zool., vol. ii. 
p. 399, pi. xxix. figs. 18-23. 
1836. „ peronii, d’Orbigny, Yoy. Amer. m^rid., vol. v. p. 171, pi. xii. figs. 1-15. 
1836-46. ,, „ Deshayes, Cuvier’s Regne Anim., Moll., pi. xxxviii. fig. 2 (copy of Rang). 
1838. „ „ Potiez and Michaud, Gal. Moll., vol. i. p. 48. 
1839. ,, „ d’Orbigny, Hist. Nat. Canaries, Moll., p. 36. 
1840. „ costae, Pirajno, Efem. Sci. Sicil., vol. xxviii. p. 149, figs, la, CD. 
1841. Atlante de Peron, Eydoux and Souleyet, Yoy. “Bonite,” Atlas Zool., pi. xix. figs. 1-8. 
1841. Atlanta peronii, Cantraine, Mai. Medit. p. 39, pi. i. fig. 1. 
1841. ,, ,, d’Orbigny, Sagra’s Hist. Cuba, Moll., vol. i. p. 102. 
1843. ,, „ Forbes, Report Brit. Assoc., p. 132. 
1844. „ „ Philippi, Enum. Moll. Sicil., vol. ii. p. 205. 
1850. ,, ,, Gray, Fig. Moll. Anim., pi. cxvii.6, fig. 5 (copy of Rang). 
1850. „ „ id., op. at., pi. cxvii.6, fig. 4 (copy of Quoy and Gaimard). 
1850. „ ,, id., op. cit., pi. cexl. fig. 6 (copy of Eydoux and Souleyet). 
1850. „ „ id., op. cit., pi. cxvii.6, figs. 2-26 (copy of d’Orbigny). 
