( 1133 ) 
Vertical section. Whilst in the centre there is but one stratum of 
median chambers, they gradually increase towards the periphery, 
so that there 2 or 3 strata of median chambers are found. From 
the centre several skeleton-columns extend towards the periphery, 
others are linked in at half-height. The height of the median cham- 
bers in the centre amounts to 25u. The lateral chambers are here 
likewise strongly flattened, and communicate with each other by 
numerous vertical. pori. The number of strata of lateral chambers 
at the centre is about 20 or more, at the periphery it is sometimes 0. 
The Lepidoeyelina described has the greatest resemblance to 
O. multipartita Marr., but differs again from it by a smaller size, 
greater thickness, inferior extension of the median plane towards the 
periphery and by the small embryo-chambers. Neither can O. flexuosa 
be regarded as the microspheric form of QO. multipartita, as the 
microspherie forms are always larger than the megalospheric ones. 
From QO. insulae-natalis the described sort distinguishes itself by its 
smallness and general shape, from O. neodispansa by its thickness 
and the much less great warts. 
QO. (Lepidoeyelina) polygona n. sp. 
A form that is no longer round but more or less regularly polygonal 
(polygona) contrasts very strongly with the two former. It is a little 
thin Lepidocyclina (d 1*/,—3 mm., 4 0.9 mm.) of a trigonal to hexagonal 
shape. At the surface one sees distinctly the irregularly confined 
chambers, whilst at the angles comparatively very strong columns 
in the shape of warts, are found at the surface. Among my material 
there was only 1 specimen with 3 warts, 40 with 5 warts and 
13 with 6. As a general rule may be admitted, that the number of 
warts and consequently likewise the polygonamy increases with the 
size, yet there are many exceptions to this rule. 
Median horizontal section. In impure median sections one sees the 
irregularly confined, lateral chambers and the skeleton columns, 
consisting of an aggregate of crystals of calcite. Here and there pori 
running vertically or obliquely upward can be seen between the 
lateral chambers. 
The embryonal chamberlet is very large, the second chamber is still 
larger and partly encloses the former; the exterior parietes of these 
two chambers are thick, the separating parietes between these two 
chambers are very thin. The maximal diameter of the second chamber 
amounts to 800—400u. Though in general the median chambers 
in this genus are still spatulate, their shapes vary however considerably, 
