466 
Lepidocyclina. 
The brecciated rock N°. 105 contains many but fragmentary 
fossils, among which Lithothamnium, Cycloclypeus, Heterostegina, 
and Lepidocyclina can be recognized. 
The individuals of the latter genus seem to reach a size of about 
10 mm.; the median chambers are spatulated to rhombic. It is 
impossible specifically to determine them for want of orientated 
sections, and isolated specimens. 
Since VerBrek’s publication of 1892, nearly all authors on Indian 
Orbitoids agree that Lepidoeyelina and Orthophragmina never occur 
together in one stratum, and that the latter are characteristic of 
the Eocene, the former of the Upper-Oligocene and Miocene. 
J. Provare (l. ce. 1908) holds a different view, she describes 
Orthophragmina and Lepidocyclina of Udju Halang in Central Borneo, 
which are said to proceed from one stratum, whilst G. Osimo *) has 
mentioned rare Lepidocyclina of West Celebes (Donggala) that are 
reported to occur with eocene Nummulites. These assertions should, 
however, be accepted with some reserve. 
In the first place at Udju Halang Lepidocyclina and Orthophrag- 
mina are not found in one and the same rock (Provare l.c. 1909 
p. 75)®, so that it is likely that they occur in the proximity of 
each other, but not in the same stratum. 
The same possibility, however, exists for the findingplaces near 
Donggala, the more so as VERBEEK (I. c. 1908, p.p. 58, 59) ascertained 
for the surroundings of Pangkadjéné and Maros, northward from 
Makassar the existence of eocene limestone with Orthophragmina, 
and of oligo-miocene limestone with Lepidocyclina the one in the 
proximity of the other. 
For the present we may consequently certainly stick to the old 
view that in India Orthophragmina characterizes Eocene, Lepido- 
cyclina on the other hand the Upper-Oligocene, so that from the 
above we may make the conclusion that in Sumba both Eocene and 
Miocene must be found. The limestone and marls of Sumba that are 
known up to the present (VERBEEK |. c. 1908) originated from the 
northern part of the island and were usually very young; the older 
ones were most likely classed with Miocene. 
Buitenzorg, August 1912. 
1) G. Osmo. Rivista italiana di Paleontologia, 14 Perugia 1908, p.p. 21—54. 
2) 1. PROVALE indicates in this place the age of the Orthophragmina as eocene, 
that of the Lepidocyclina as oligocene. (?) 
