( 1126 ) 
section, described by R. Jones and CHAPMAN *). Afterwards Scuium- 
BERGEE *) has applied this name to a well-known form of Java, the 
thin section of which corresponded very well.to the form of Christmas 
Island d 12—19 mm. h 5 mm. Skeleton columns very fine with 
little warts at the surface. This form is likewise known in Borneo’) 
and Sumatra *). 
A rather large form of O. formosa first described by SCHLUMBERGER‘) 
as VO. formosa is likewise well known. From the sections (he found 
the Orbitoide in hard lime-rock), he concluded that he had to do 
with a radius-shaped Lepidocyclina, but Dovvurs *) showed that the 
Orbitoide had a very pronounced saddle-shape, and consequently 
gave a radius-shaped horizontal section — megalospheric, median 
chambers on horizontal section half-circle-shaped, lateral chambers 
separated by very thin horizontal parietes d max. 18, h 2 mm. At 
the surface no warts are found. Borneo *), *), and Celebes *). 
The mierospherie form of O. Tournoueri Lem. and Dovv. is like- 
wise large and according to Douvirrú *) likewise smooth. 
5. Orbitoides of average size. Not many forms of average size 
remain. Brapy’) described from the Padangsche Bovenlanden an 
Orbitoid as O. papyracea, afterwards VerBeEK and Frnnema‘) proved 
the incorrectness of this determination and called the form which 
they knew likewise from Nias 0. 1 B. Newron and HorrAND’) 
found this Lepidocyclina back in Sarawak and christened it O. Ver- 
BEEKL They found there both the microspheric form, and the macro- 
spheric one, the former is the larger d 5—12 mm. ‚ 1*/,—2 mm. 
By the smooth surface and the gradual thickening towards the centrum 
this form is sufficiently characterized; it can only be mistaken for 
O. formosa. Incidentally O. VerBeeKr is likewise mentioned from 
Christmas Island *). 
1) T. Rupert Jones and F. CrarmaM, lc. p. 242—243. 
2) GC. ScHLUMBERGER, Samml. des Geol. Reichsmuseums in Leiden, 6, p. 128 — 
134, 1901. 
3) H. Dovvitts, Lc. 
1) C. Scutumpercer, Samml. des Geol. Reichsmuseums in Leiden, 6, p. 250— 
253, 1902. 
OEE BRADY, lie: 
6) R. VERBEEK et R. fENNEMA, l.c. 
7) BuLLEN Newton and HoLLANp, l.c 
5) JoNEs and CHAPMAN, l.c. 
