KONGL. SV. VET AKADKMIKNS HANDLINGAK. HANI). 19. N:() 4. 95 



Fig. 213: rotaliform with u cluster of extra chambers. 



Fig. 214: a single detached chamber with 3 eferent and 1 afferent tubes. 

 Fig. 215- 216: free, globigerine form, with fissure like aperture- 

 Fig. 217: medians section of the same. 

 Fig. 218: Polytremaformed, uniserial. 

 Fig. 219: Buliminaforrned. 



& 



Syn. Carponteria balaniformis GRAY, 1858, On Carpenteria etc.; Proceed. Hool. Soo. 1858. 26, p. '266. 



CARP., 1862, Introduct. p. 180, t. 21. 

 monticularis CART., 1877. A. M. N. H. (4) 19, p. 209: t. 13, fT. 915; ibidem 20. 



p. 68. 

 Polytrema balaniforme CART., 1876, A. M. N. H. (4) 17, p. 198, t. 13; figg. 710. 



Planorbulina f'arcta FICHT. and MOLL. 



Tab. VII, figg. 220225. 



Our form has sometimes a subnautiloid shape with both sides nearly alike in- 

 dicating an independent life, but in general it is truncatuline. This nautiloid form is 

 hardly to be distinguished from Plan, tuberosa FICHT. and MOLL. The early stage of 

 growth is not distinguishable from the young of Plan, vulgaris n'ORB. 



It is scarcely within our power to identify the many species referred to the 

 genera Truncatulina, Anomalina, Rosalina etc.; which have been somewhat uncritically 

 instituted by the different authors. Our list of synonyms, to a great deal founded on 

 the able suggestions and unparalleled experience of Messrs. PARKER and JONES, may 

 still be liable to some errors in the disposition of the species. 



This cosmopolite is not uncommon, particularly in the chalk-ooze, but it seldom 

 attains fully 1 mm. in diameter. 



Figg. 220 222; 223 225: two specimens viewed from different sides; the one 

 more Anomalina formed than the other. 



Syn. Nautilus farctus FICHT. and MOLL., 1803, Test, microsc. p. 64, t. 9, figg. g, \\, i. 



a) irregularis: vulgaris D'ORB. 



Webbina Isevis, tuberculata SOLLAS, 1877, Geol. Mag. Dec. 2; 4, N:o 1, p. 103, t. 6, figg. 13. 

 Truncatulina variabilis D'ORB., 1844, lies Canaries p. 135, t. 1, fig. 29. 



Rss., 1864, Oberbnrg; Wien. Ak. Dksclir. 1. 23. i, p. 10, t. 1, fig. 15. 

 innormalis COSTA, 1854, Pal Nap. 2, t. 21, fig. 11. 



Planorb. truneata EGO., 1857, Mioc. Ortenb.; Leonh. u. Bronn. Jhrb. 1857, p. 280. t. 10, 



figg. 15-17. 

 Acervulina cretse MARSS., 1877, Riigen. Schreibekreide; Greifsw. Nat. Verein. Mitth. 1877 78, 



p. 169, t. 5, fig. 39. 

 Anomalina anomala EGO., 1857, Mioc. Ortenb.; Leonli. u. Bronn. Jhrb. 1857, p. 280, t. 9, 



figg. 10-13. 

 Truncatulina tumoscens Eoo., ibid. p. 279, t. 9, figg. 14 16 (in PI. tubcrosam transgrcdiens). 



