Figure 6 in Fregetta lineata (Peale, 1848) is a valid extant species endemic to New Caledonia

Figure 6. Comparative measurements of New Caledonian Storm Petrel Fregetta lineata (black), White-bellied Storm Petrel F. grallaria (red) and Black-bellied Storm Petrel F. tropica (green). Data are presented as a correlation matrix for each pair of morphometric variables, with the diagonal in the matrix showing the distribution of each variable per taxon. Colour chart as in Fig. 4F.