|
|
Divisible |
 |
1. Carlgrenia desiderata. Muscular part of a macromesentery, and the whole of the adjacent micromesentery. Obj. 1 1/2. |
Not Divisible |
 |
Fig. 1-Gyrostoma glaucum, sp. nov. A. Transverse section through the column in the lower part of the stomodaeum. B. Vertical section of the lower part of the sphincter. c.m.=circular muscle: ec.=ectoderm: en.=endoderm: g.=gonad: m.=mesogloea: t.=tentacles thrust into mouth. |