. Fig. 33.â Volucella lividiventris, Brun., head iu profile. S $. Very near ruficauda, but distinct. The hair on the thoracic dorsum is distinctly grev, the tuft of hair on the vertex is greyish-white, while the venter has the 2nd and 3rd segments livid grey with unicolorous hair. A bunch of grey hair is found on each of the two basal abdominal segments at the sides, and the

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Keywords: ., bookcentury1900, bookcollectionbiod, bookdecade1920, bookyear1920