Showcase of three newly identified bona fide CP3 stars, illustrating the blue-violet region of the LAMOST DR4 spectra of (from top to bottom) LAMOST J030852.02+553734.3 (B8 IV HgMn), LAMOST J051625.06+563321.2 (B7 IV−V HgMn), and LAMOST J055457.96+092830.5 (B8 IV HgMn). The bottom spectrum is that of α And as adapted from Fig. 4.16 of Gray & Corbally (2009). The spectral types in parentheses correspond to the MKCLASS final types. Some prominent lines of interest are identified.