Colpocephalum unciferum Kellogg, 1896
Colpocephalum unciferum Kellogg, 1896a: 140, pl. 12, figs 1–3.
Colima: Puffinus auricularis, Clarion Island, 1897, R.C. McGregor (Kellogg & Mann 1912). San Luis Potosí: Pelecanus erythrorhynchos, Ajinche, 10 Nov. 1946, C. Shaw (Carriker 1954a). Note: The record from Puffinus auricularis is most likely the result of a contamination because there is no species of Colpocephalum parasitising any species of Puffinus (see Price et al. 2003).