210 FORAMINIFERA 



into chambers, without complex secondary skeleton or canal 

 system; wall calcareous, perforate; aperture narrow, at the 

 base of the apertural face. 

 Carboniferous. 



Genus CAMERINA Brugiere, 1792 



Plate 29, figures 4-6, 15; plate 30, figure 3 

 Genotype, by designation, Camerina laevigata Brugiere 



Camerina Brugiere, Ency. Method., "Vers", pt. 1, 1792, p. 395. 



Nautilus (part) of authors. 



Phacites Blumenbach, Abbild. Nat. Gegenstande, heft 4, no. 40, 1799, 

 pi. 40 (genoholotype, Phacites fossilis Blumenbach). 



Nummidites Lamarck, Syst. Anim. sans Vert., vol. 9, 1801, p. 101 (geno- 

 holotype, Camerina laevigata Brugiere). 



Lenticiilina Lamarck (part), Ann. Mus., vol. 5, 1804, p. 186. 



Nummulites Montfort, Conch. Syst., vol. 1, 1808, p. 155 (genoholotype, 

 Nummulites devnrins Montfort). 



Lycophris Montfort, 1. c, p. ]59 (genoholotype. Nautilus leiiticularis 

 Fichtel and Moll (part)). 



EXPLANATION OF PLATE 29 



Camerinidae 

 Fig. 



1, 2. Archaediscus karreri H. B. Brady. X 25. (After type figure). 

 I^ig. 1, a, side view; b, peripheral view. Fig. 2, Section. 

 3. Nunmiulostegina veUbitana Schubert. (After type figure), a, 

 side view; b, peripheral view. 

 4-6. Camerina elegavs (Sowerby). (After Jones). Fig. 4, Exterior, 

 side view. X 6. Fig. 5, Section. X 12. Fig. 6, Part of 

 section. X 35. 

 7. Assilina undata d'Orbigny. (After d'Orbigny). a, side view; b, 

 peripheral view. 

 8, 9. Operculinella cumingii (Carpenter). (After type figure). Fig. 

 8, Young. Fig. 9, Adult, a, side view; b, peripheral view. 

 10. Operculina granulosa Leymerie. X 8. (After H. B. Brady), a, 

 side view; 6, peripheral view. 

 11, 12. Heterostegina depressa d'Orbigny. X 8. (After H. B. Brady). 

 a, side view; b, peripheral view. 



13. Cycloclypeiis guembelianus H. B. Brady. X 20. (After H. B. 



Brady), a, side view; b, peripheral view. 



14. Spiroclypeus, idealized figure. (After Van der Vlerk and 



Umbgrove). 



15. Camerina, idealized figure. (After Van der Vlerk and Umbgrove). 



