l88 NEW YORK STATE MUSEUM 



Pulvinulina boueana (d'Orbigny) 



Plate 6, figures 3, 4a, b 



Rotalina boueana d'Orbigny, 1848, Foram. Foss. Vienne, p. 152, 



pi. vii, figs. 25-27 

 Pulvinulina boueana Vadasz, 1910, Triasforam. aus dem Bakony, 



P- 33. pl- ii. %s. 9, ID 



This species of Pulvinulina must not be confused with T r u n - 

 catulina boueana d'Orbigny possessing only seven or eight 

 segments. The septa are more arched and there are three whorls 

 of about sixteen segments of which eight, or sometimes nine, are 

 in the final volution. 



This type is found on slide i and is an excellent example of the 

 species. 



This foraminiferan has been figured from the Septaria Clays by 

 Reuss and the London Clays by Sherborn & Chapman, while the 

 Trias specimens described by Vadasz were from the Protrachyceras 

 zone near Felsoors. 



According to d'Orbigny, the species still lives in the Adriatic 

 ocean, but it does not appear to have been identified or described 

 by Brady in his exhaustive monograph on Recent Foraminifera of the 

 Challenger Expedition. Brady gives as its isomorph forms D i s - 

 corbina saulcii d'Orbigny, Truncatulina akneri- 

 a n a d'Orbigny and Rotalia exsculpta Reuss. Cross 

 sections of these types in fossil form would be inseparable unless 

 cut in transverse section instead of horizpntal. 



Pulvinulina elegans (d'Orbigny) 



Plate 6, figures s, 6a, b, c 



Rotalia elegans d'Orbigny, 1826, Ann. Sci. Nat., 7:276, no. 54 

 Pulvinulina repanda (Fichtel & Moll) var. elegans Parker & 



Jones, 1865, Phil. Trans., 155:397, pi. xvi, figs. 44-46 

 Rotalina partshiana (d'Orbigny) 1846, Foram. Foss. Vienne, 



p- 153. pl- vii, figs. 28-30, pi. viii, figs. 1-3 

 Pulvinulina elegans Goes, 1894, K. Sv. Vet. Akad. Handl., v. 25, 



no. 9, p. 97, pl. xvi, fig. 808 



On slide 5 (X) we find a transverse section of a small, but stoutly 

 built, conical Pulvinulina near P. elegans. The internal 

 structure is somewhat nummuline as shown in published sections 

 of its relative, Pulvinulina partschiana (d'Orbigny) , 

 from which this species is with difiiculty separated. The lower 

 surface is weakly convex, almost flat, while the superior face is 

 highly coned. The segmentation is not fully determined in our 



