Sanguis meus: Verg. Aen. vi. 836—"Projice tela manu, sanguis meus!"
Egnia: "muffish"—segnis; therefore "uffish" = egnis. This is a conjectural analogy, but I can suggest no better solution.
Susuffrus: "whiffling," susurrus: "whistling."
Spicula: see the picture.
Burbur: apparently a labial variation of murmur, stronger but more dissonant.