KONGL. SV. VET. AKADEM1ENS HANDLINGAR. BAND. 19. N:O 4. 105 



Syn. Pullenia bulloides HKEX., 1875, Clav. Szab. Sch., p. 59, t. 10, fig. 9. 



obliqueloculata PARK, and JONES, 1865, Arct. and Northatl. Ocean; Phil. Trans. 155. 1, 



t 19, fig. 4. 



b) magis corapressa: 



Nonion. quaternaria Hss., 1850, Kreiclemerg. Lemberg; Haid. nat. Abh. 4. 1, p. 34, t. 2, fig. 13. 

 quinqueloba Rss., 1851, Sept. Thon v. Berlin; Zeitschr. deutsch. geol. Ges. 3, p. 72> 



t. 5, fig. 31. 

 Pullenia compressiuscula p quadriloba Rss., 1867, Steinsalzablager. Wieliczka; Wien. Ak. Sitz.- 



Ber. 1. 55, p. 87. t. 3, fig. 8. 



Discorbina rosacea D'ORB. 



Tab. VIII, figg. 251257. 



Our form is generally of pigmy size; it comes near to Asterigerina planorbis 



. and EGGER (from the tertiary strata) and is also nearly identical in shape with 

 Ros. Auberii D'OKB. from the West Indies. Its most striking feature is its semilunar, 

 long chambers, and their restricted number in each convolution. It has a yellowish 

 hue in transmitted light. 



The scantiness of our supply of Discorbina? and the uncritical method of specific 

 distinction and representation of the forms adopted by the different authors make us 

 unable to make a satisfactory disposition of the forms in their natural places, not- 

 withstanding the very sagacious hints in regard to this matter given by Messrs. PARKER 

 and JONES. 



The difference between Discorb. rosacea and valvulata is very slight. 



It is not uncommon, but always in a pigmy-state, (0,25 mm.) in the chalk-ooze. 



Figg. 251 253; Discorbina rosacea; 251 b: the same more enlarged, in trans- 

 mitted light. 



Figg. 254 255: another specimen, spiral and apertural sides. 



Figg. 251) 257: young small specimens; it has sometimes a clouded appearance 

 in transmitted light. 



Syn. Rotalia rosacea D'ORB., 1826, Tab. meth.; An. Sc. Nat. 7, p. 273, N:o 15, Mod. 39. 



Discorbina turbo var rosacea PARK, et JONES, 1865, North. Atl. and Arct. Oc.; Phil. Transact. 



155. 1, p. 385, t. 16, fig. 28. 



rosacea PARK, et JONES, 1866, Crag. For.; Pal. Soc. 19, t. 4, fig. 17. 



Rotalia Mamilla, ochracea WILLIAMS.. 1858, Brit. rec. forf. p. 54, 55, figg. 109 113. 

 Asterigerina planorbis D'ORB., 1846, For. tert. Vienne p. 205, t. 11, figg. 1 3. 



EGGEB, 1857, Mioc. Ortenburg; Lconh. u. Broun. Jhrb. 1857, p. 281, t. 11, 



figg. 8 -10. 



Rosalina Auberii D'ORB., 1839, Cuba, p. 94, t. 4, figg. 5 8. 



Truncat. flos KARR., 1868, Mioc. For. faun. Kostej; Wien. Ak. Sitz.-Ber. 1. 58, p. 182, 



t. 4, fig. 15. 



K. ST. Vet.-Akad. Handl. Bd. 19. N:o 4. 14 



