NONIONINA. 



3a9 



Mr. Millett's Systematic Grouping of the published figures of the Genus 



NONIONINA. 



K 

 H 



•4 



a 



o 



hi 



Hi 



h! 

 Pd 

 ft 

 GO 



r2 * 



ci 

 ,® ° 



-h> "2 

 ■° & 



03 -H 



9 



35 a> 

 e3 -O 



5 O 



to oo 



** "3 

 r* c3 



h:"° 



s a 



J3 43 





o 



O i 



.a 

 «2 



Hi 



Hi 



Ed 

 W 

 GO 



O 

 EH 



8 1 





Umbilical region exposed on loth faces. 



Nonionina Sloanii, d'Orb., 1839. Woodcut, 

 fig. 26, p. 341. 



— Grateloupi, d'Orb., 1839. 



— communis, d'Orb., 1846. 



— — Terquem, 1882. 

 — — 1875. 



— — Egger, 1893. 



— exponens, B., P., and J., 1888. 



— Brownii, d'Orb., 1839. 



— communis, Terrigi, 1880. 



— crassula, var. scap/ia, Goes, 1882. 



— scapha, Egger, 1893. 



— communis, Terrigi, 1883. 



— punctulata, d'Orb., 1839. 



— asterizans, var. turgida 2 William- 



son, 1858. 

 Polystomella crispa, var. Nonionina tur- 



ffida, P. and J., 1865. 

 Botalia cristellarioides, Reuss, 1863. 

 Nonionina turgida, Goes, 1882. 

 — Brady, 1884. 



— — Terquem, 1886. 



— — Egger, 1893. 

 Nautilus faba* F. and M., 1803. 



— scapha, E. and M., 1803. Woodcut, 



fig. 27, p. 341. 

 Nonionina scapha, Brady, 1865. 



— — Terrigi, 1883. 



— Labradorica, Dawson, 1860. 



— — Jones, Parker, and 



Brady, 1866. 

 Polystomella crispa, var. Nonionina scapha, 



P. and J., 1865. 

 Nonionina pauper, Egger, 1857. 



— fata, Terrigi, 1883. 



— latescens, Schwager, 1883. 



— Boueana, Reuss, 1863. 



Umbilical region on both faces covered by 

 exogenous or other shell-deposit. 1 



Nonionina scapha, B., P., and J., 1888 

 (pi. xliii, figs. 20 5, c). 



Nonionina communis, Terrigi, 1883. 



— — Egger, 1857 (pi. xiv, 



figs. 11, 12). 



— pauper ata, Halkyard, 1889. 



— nautiloidea, Costa, 1856 (pi. xx, 



fig. 1). 



— — Costa, 1856 (pi. xxii, 



fig. 20). 



— pauperata, Balkwill and Wright, 



1885). 



Having the two characters combined, one umbilicus being open and the 



other covered up. 



Nonionina Boueana, var. Janiformis (see p. 343). 



Nautilus spiralis-umbilicatus, &c. Walker and Jacob, 1784, 'Ann. Mag. Nat. Hist.,' 

 ser. 3, vol. iv, 1859, p. 339, H a. 



1 Such as the asterigerine flaps over the sutures o£ Nonionina stelligera, and even supplementary 

 chambers if they be found to exist in any of the Nonioninse. 



2 N. turgida is one of the most characteristic, but not the central type of the N. communis group. 



3 N. faba may be a Polystomella, but it has the elongate contour of N. scapha, and no published 

 Polystomella possesses this form. It is noted in the 'Ann. Mag. Nat. Hist.,' ser. 3, vol. v, 1860, p. 103, 

 that " this may be an oblong form " of P. striatopunctata. 



44 



