KONGL. SV. VET, AKADEMIENS HANl)LlN&Al!. BAND. 10. N:0 4. 95 



Fig. 213: rotalifomn with a duster of extra chambers. 



Fig. 214: a siiigle detached chaiuber with 3 eferent and 1 afierent tubes. 



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



Fig. 217: mediane sectioii of the same. 



Fig. 218: Polytremaformed, uniserial. 



Fig. 219: Biiliminaformed. 



Syn. Carpenteria taalaniformis Gray, 1858, Oii Carpenteria etc; Proceod. Zool. Soc. 1858. 26, p. 266. 



Carp., 1862, Introduct. p. 186, t. 21. 

 » montieularis Cart., 1877. A. M. N. Ii. (4) 19, p. 209; t. 1.3, ff. 9—15; ibidem 20> 



p. 68. 

 Polytrema balaniforme Cart., 1876, A. M. N. H. (4) 17, p. 198, t. 13; iigg. 7—10. 



Planorbulina farcta Ficht. and Moll. 



Tab. VII, iigg. 220—225. 



Oiir form has sometimes a subnaiitiloid shape with both sides nearly alike in- 

 dicating an independent life, but in genei'al it is »truncatuliiie.» This nautiloid form is 

 hardly to be distinguished from Plan. tuherosa Ficht. and Moll. The early stage of 

 growth is not distinguishable from the young of Plan. vidgaris d'Oeb. 



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

 genera Truncatulina, Änomalina, Rosalina etc.; whieh 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 fuUy 1 mm. in diameter. 



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

 more »Änomalina» formed than the other. 



5yii. Ifautilus faretus Ficht. and Moll., 1803, Test. microsc. p. 64, t. 9, figg. g, b, i. 



a) irregularis: v ul ga ris d'Orb. 



Webbina Isevis, tuberculata Sollas, 1877, Geol. Mag. Dec. 2; 4, N:o 1, p. 103, t. 6, figg. 1 — 3. 

 Truncatulina variabilis d'Oiib., 1844, Hes Canaries p. 135, t. 1, fig. 29. 



Rss,, 1864, Oberburg; Wien. Ak. Dkscbr. 1. 23. i, p. 10, t. 1, fig. 15. 

 " innormalis Costa, 1854, Pal Nap. 2, t. 21, fig. 11. 



Planorb. truneata Egg., 1857, Mioc Ortenb.; Leonb. u. Bronn. Jhvb. 1857, p. 280. t. 10, 



figg. 15-17. 

 Aeervulina eretse Marss., 1877, lliigen. Schreibekreide; Greifsw. Nat. Verein. Mittb. 1877 — 78, 



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

 Änomalina anomala Egg., 1857, Mioc. Ortenb.; Leonb. u. Bronn. .Tbrb. 1857, p. 280, t. 9, 



figg. 10 — 13. 

 Truncatulina tumeseens bioG., ibid. p. 279, t. 9, figg. 14 — 16 (in PL tuberosam transgrediens). 



