TY - JOUR T1 - Polytremacis and the Ancestry of the Helioporidae. JF - Proceedings of the Royal Society of London (1854-1905) VL - 66 SP - 19 EP - 19 PY - 1899/01/01/ UR - http://dx.doi.org/10.1098/rspl.1899.0065 M3 - doi:10.1098/rspl.1899.0065 AU - Gregory, J. ER -