Smith, E. A. (1872). Remarks on several species of Bullidae, with descriptions of some hitherto undescribed forms and of a new species of Planaxis. Annals and Magazine of Natural History. ser. 4, 9: 344-355.
40447
Smith, E. A.
1872
Remarks on several species of Bullidae, with descriptions of some hitherto undescribed forms and of a new species of <i>Planaxis</i>