1<'01IAMTNTFEU. A— HERON-ALLEN AND EARr.AND. 



41 



observes again, " a miinher of the arenaceous forms, generally incliKled in tlic 

 genus Trochammina, should apparently be placed among the Rotalinae." * 



The next serious attempt to redistribute the Lituolidae was made by 

 Neumayr in 1887 t when he discussed previous systems of classification and the 

 relationships of arenaceous and calcareous Foraminifera, givmg a table in which 

 he separates the Astrorhizidae properly so called, and divides all the other genera 

 into the arenaceous and calcareous development- stages {EntivicJdungsstufe) of 

 four " t}^es " — the Cornuspira type, the Textularia type, the Lituolida type, 

 and the FusuUnida type — with the latter of which the present Report is not 

 concerned. 



This Paper he subsequently elaborated and revised in his great work " Die 

 Stamme des Thierreiches " (Vienna and Prague, 1889, Vol. i., pp. 158-206) in 

 which he repeats his " Tabelle." We need not analyse this lengthy treatise ; it 

 suffices to say that he makes a bold and intelligent attempt to - carry out the 

 views of Biitschli. His preliminary suggestion, however, may be cited. He disposes- 

 certain leading genera as follows : — 



Arenaceous Series. 

 Ammodiscus. 

 Webbina. 

 Nodosinella. 

 Reophax, Haplostiche. 

 Haplophragmium, Trochammina, 



Endothyra. 

 Cystammina. 



Calcareous Series. 

 Sfirillina , Cornuspira . 

 Nubecularia. 

 Nodosaria. 



Nodosaria, Dcntalina, Lagena. 

 Marginulina, Cristellaria, Noniuinna, 

 Sjjhaeroidina, Globigerina, Rotalia. 

 AUomorphina. 



Not the last word on the main issue, but the most important, and the last 

 with which we shall introduce our classification, was uttered by Eimer and 

 Fickert in 1899. J After giving Brady's definition of the family (B. 1884, F.C., 

 p. 65) they go on to say : — " By this separation of otherwise similar arenaceous 

 forms from their calcareous relations, Brady retrogrades into error. To employ 

 an isolated and, indeed, quite unessential (or accidental) characteristic as the 



* It may be observed in tliis place tliat tlie student, in considering this question of arenaceous 

 iswnorphs, cannot afford to overlook the series of papers by .Josef CTrzybowski, which record and figure a 

 very large number of these, under Reophax, Haplofhraijmium, Trochammina, Cyclammina, Sorosphaera, but 

 which are unfortunately written in Polish, which tantalises the average British worker, so far as his text 

 is concerned. The most significant are " Otwornice czerwonych ilow z Wadowio " (Cracow, 1896), 

 " Otwornice pokladow naftonosnych okolicy Krosna " (Cracow, 1897), '■ Otwornice warstw Inoceramo- 

 wych okolicy Gorlic " (Cracow, 190(i.) See our '^ References," G., 1901, O.W.I., |). 240. 



•f- M. Neumayr, '' Die natiirlichon Verwaudschaftsverhaltnisse dcr schalentragendcn Foraminiferen," 

 Sitzb., K. Ak. Wiss. Wien, vol. xcv, 1887, pt. i, pp. 1.56-186. 



+ G. H. T. Eimer and C. Fickert, " Die Artbildung imd Verwandschaft bei den Foraminiferen. 

 Eutwurf einer natiirlichen Eintheilung derselben," Zeitschr. wiss. Zool, vol. Ixv, pt. 4, pp. -527-636, figs. 



G 



VOL. VI. 



