Pr otethmos bartolomaei 
There are 66 septa -- four complete cycles with a little 
less than a third of the members of the fifth* All of the 
septa. are thin, their distal ends, however, are enlarged* The 
primaries can be quite easily distinguished, partly by septal 
grouping and partly by their sometimes being slightly thicker than 
the secondaries. The primaries, secondaries and tertiaries, 
extend to the columella. The quaternaries are long, extend to 
near the columella, often fuse by their inner ends to the sides 
of the tertiaries-, the quinaries, when present, also are quite 
long, often fusing to the sides of the quaternaries. The primary, 
secondary and tertiary septa usually are solid, the secondaries 
and tertiaries may show a few perforations near their inner 
ends; quaternaries and quinaries decidedly perforate, especially 
their inner portion. The septal trabeculae are not regular in 
size for septa of the same cycle or for the same septam. Septal 
faces granulate, granulations sharp-pointed, with wider bases, 
usually standing at right angles to the septal plane. Synapticula 
are present, sparse, and slender. Dissepiments apparently ab- 
