TY  - JOUR
T1  - On Holtenia, a Genus of Vitreous Sponges
JF  - Philosophical Transactions of the Royal Society of London (1776-1886)
VL  - 159
SP  - 701
EP  - 720
PY  - 1869/01/01/
UR  - http://dx.doi.org/10.1098/rstl.1869.0030
M3  - doi:10.1098/rstl.1869.0030
AU  - Thomson, W.
ER  -