138 FORAMINIFERA 



Mollerina (part) Schellwien, Paleontographica, vol. 44, 1898, p. 258. 

 Doliolina (part) Schellwien, in Futterer's "Durch Asien", vol. 3, 1903, 



p. 125. 

 Yabeina Deprat, Mem. Serv. Geol. Indochine, vols. 1-3, 1912. 



Test large, spheroidal to fusiform, whorls numerous, always 

 more than twelve in adult specimens; septa and wall rather 

 thick, but in advanced forms conspicuously slender. 



Permian. 



Subgenus CANCELLINA Hayden, 1909 



Plate 15, figures 3, 4 

 Subgenotype, Cancellina pritnigena Hayden 



Cancellina Hayden, Rec. Geol. Surv. India, vol. 38, 1909, p. 244. — OzAWA, 



Journ. Fac. Sci. Imp. Univ. Tokyo, ser. 2, vol. 2, pt. 3, 1927, p. 161. 

 Doliolina (part) Deprat, Mem. Serv. Geol. Indochine, vol. 2, 1913. 



Test small, ellipsoidal to fusiform ; whorls not numerous, gen- 

 erally less than thirteen in adult specimens; septa and wall 

 rather thin. 



Permian. 



Genus SUMATRINA Volz, 1904 



Plate 15, figures 8, 9 

 Genotype, Suviatriyia annae Volz 



Sumatrhia Volz, Geol. Pal. Abhandl., Bd. 10, 1904, p. 98.— Ozawa, 

 Journ. Coll. Sci. Imp. Univ. Tokyo, vol. 45, pt. 4, 1925, p. 25. 



Neoschwagerina (part) Yabe, Journ. Coll. Sci. Imp. Univ. Tokyo, vol. 21, 

 art. 5, 1906. 



Test cylindrical ; mesh-structure obscurbed, four kinds of 

 septa well developed ; central chamber spherical ; wall with 

 median lamella and mesh-structure. 



Upper Permian. 



This is a very specialized group and on which very much de- 

 tailed work is being done. It was evidently derived from the 

 general group represented by Endothyra and its allies in the 

 younger Visean time, but no species evidently ascribable to the 

 group has been reported in the Lower Carboniferous. 



With the beginning of the Upper Carboniferous, one line of 

 the group — Fusulininae, developed with great rapidity. In 

 Spitzbergen, Russia, Southern Europe, North America and 



