204 
THE VOYAGE OF H.M.S. CHALLENGER. 
Peneroplis pertusus, Forsk&l, sp. (PL XIII. figs. 12-25). 
a. Broad, complanate specimens, PI. XIII. fig. 15. 
Type — Peneroplis planatus, Fichtel and Moll, sp. 
Nautilus (Lituus) arietinus (pars), Batsch, 1791, Conch. Seesandes, p. 4, pi. vi. fig. 15, a.b. 
„ planatus, var. /3, Fichtel and Moll, 1803, Test. Micr., p. 91, pi. xvi. fig. 1, d.e.f. 
Peneroplis lanatus, Montfort, 1808, Conchyl. Syst., vol. i. p. 258, 65® genre. 
Cristellaria planata, Lamarck, 1816, Tableau Encycl. et Meth., pi. cccclxvii. fig. 1, a.b.c. 
„ dilatata, Id. Ibid. fig. 2, a.b.c. 
„ squamw,ula, Id. 1822, Anim. s. Vert., vol. vii. p. 607, No. 1. 
Peneroplis planatus, d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 285, No. 1 ; — Module, No. 16. 
,, „ Williamson, 1858, Rec. For. Gt. Br., p. 45, pi. iii. figs. 84, 85. 
„ prisca, Reuss, 1864, Denkschr. d. k. Akad. Wiss. Wien, vol. xxiii. p. 9, pi. i. fig. 7. 
b. Medium, nautiloid forms with porous or dendritic aperture, PI. XIII. figs. 16, 17. 
Type — Peneroplis pertusus, Forskal, sp. 
Nautilus pertusus, Forsk&l, 1775, Descr. Anim., p. 125, No. 65. 
„ planatus, var. a, Fichtel and Moll, 1803, Test. Micr., p. 91, pi. xvi. a.b.c. 
Spirolina ( Spirolinites ) depressa, Lamarck, 1804, Ann. du Mus., vol. v. p. 245, No. 1. 
Dendritina arbuscula, d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 285, pi. xv. figs. 6, 7 ; — Module, No. 21. 
Peneroplis elegans, 
Dendritina antillarum, 
Peneroplis proteus (pars) 
„ pulchellus, 
Dendritina hauerii, 
,, juleana, 
„ elegans, 
Id. 1839, Foram. Cuba, p. 79, pi. vii. figs. 1, 2. 
Id. Ibid. p. 77, pi. vii. figs. 3-6. 
Id. Ibid. p. 78, pi. vii. fig. 11. 
Id. 1839, Foram. Amer Merid., p. 32, pL iii. figs. 5, 6. 
Id. 1846, For. Foss. Vien., p. 134, pi. vii. figs. 1, 2. 
Id. Ibid. p. 134, pi. vii. figs. 3, 4. 
Id. Ibid. p. 135, pi. vii. figs. 5, 6. 
Peneroplis planatus (young), Williamson, 1858, Rec. For. Gt. Br., p. 45, pi. iii. fig. 83. 
„ pertusus, Jones, Parker, and Brady, 1865, Foram. Crag, p. 19. 
Dendritina arbuscula, Id. Ibid. p. 17, pi. iii. figs. 48, 49. 
Peneroplis pertusus, Moebius, 1880, Foram. von Mauritius, p. 78, pi. iii. figs. 9-12. 
c. Narrow compressed specimens, PI. XIII. figs. 18, 19, 22. 
Type — Peneroplis arietinus, Batsch, sp. 
“ Cornu hammonis,” &c., Plancus, 1760, Conch, min. not., p. 120, pi. i. fig. x. 
Nautilus umlnlicatus, Linn6, 1767, Syst. Nat., 12 ed., p. 1163, 278. 
„ semilituus, Id. Ibid. p. 1163, 280. 
„ {Lituus) arietinus (pars), Batsch, 1791, Conch. Seesandes, p. 4, pi. vi. fig. 15, c. 
Peneroplis planatus, d’Orbigny, 1826, Ann. Sci. Nat., vol. vii. p. 285, No. 1 ; — Module, No. 48. 
„ proteus (pars), Id. 1839, Foram. Cuba, p. 78, pi. vii. figs. 9, 10. 
arietinus, Parker, Jones, and Brady, 1865, Am. and Mag. Nat. Hist., ser. 3, vol xvi. p. 26, 
pi. i. fig 18. 
