KONGL. SV. VKT. AKADEMIENS HANDLINGAR. BAND. 19. N:O 4. 121 



Vertebralma conicoarticulata BATSCH. 



Tab. IX, figg. 311318. 



This species includes a great number of forms with such an inconstancy of cha- 

 racters that it would be wasted time and labour, and not only so, but inconsistent 

 with a philosophical notion of designation, to range them even as distinct varieties. 

 It has one stout, highly developed, and one pigmy form. Its most singular form is 

 that in which the primordial chamber is flaskformed and the subsequent chamber deve- 

 lopes itself from the top of its neck and so on, one chamber after the other in Nodo- 

 sarina fashion; thus its usual Miliolina formed stage is passed over altogether. 



The peneropliform variety, recorded by CARPENTER, we have not met with. This 

 species is not unfrequent both in the chalk-ooze and in the coralline-gravel, and at- 

 tains a higher development on the latter. 



Figg. 311 313: broad, stout forms, designed by D'()RBIGNY as Vertebr. cassis and 

 striata; Articulina Sagra D'ORB. etc. 



Figg. 314 315: sections in the medial plane, exhibiting the young Milioline 

 stage included in the succeeding flattened chamber of the Nodosarina growth. 



Fig. 316: pigmy form from the chalk-ooze. 



Fig. 317: rodformed Articulina nitida D'()RI?., a primordial highly developed 

 chamber taking the place of the early Miliolina-stage. 



Fig. 317 b: the same more magnified. 



Fig. 318: Very young Vertebralina, about 0,11 mm. in length. 



a) tennis, articulata, striata: 



Syn. Nautilus conico-articulatus BATSCH, 1791, Sechs Kupfertafeln etc. t. 3, fig. 11 (sec. PARK, et JONES). 

 Articulina nitida D'ORB., Tab. muth.; An. So. nnt. 7. p. 300; Mod. N:o 22. 



Sagra D'ORB., 1839, Cuba p. 183, t. 9, figg. 2326. 



gibbosula D'ORB., 1846, For. tert. Vienne, p. 282, t. 20, figg. 16 18. 



Vertebralina elongata KARR., 18G8, Mioc. For. fauna Kostej; Wien. Ak. Sit/.-Ber. 1. 58, p. 155, 



t. 3, fig. 10. 

 striata var. CARPENTER, 1862, Introcl. t. 5, fig. 23. 



/V) tennis, articulata, Ircvis v. sublrevis: 



Vertebralina striata var. CARPENTER, 1862, Introd. t. 5, ligg. 19, 24. 



sarmatica KARR., 1877, Hochqu. Wasserleit.; Osterr. geol. Reichsanst. Abh. 9, p. 376, 



t. 16, fig. 12. 



I)) magis dilatata, striata: 



Vertebralina striata D'ORB., 1826, Tabl. m6tli. ; Ann. Sc. Nat. 7, p. 283, N:o 1; Mod. N:o 81. 



cassis, mucronata n'Onn., 1839, Cuba p. 51, 52, t. 7, figg. 1419.; 1846, Bass 



tert. Vienne p. 120, t. 21, figg. 1819. 



Articulina sulcata Rss., 1849, Neue For. osterr. tert. Beck.; Wien. Ak. Bkschr. 1. i, p. 383 



t. 49, figg. 1317. 



K. Sr. Vet. Akail. Hand). Bd. 19. N:o 4. 1 O 



