The horns, usually present in both sexes, are small and straight, situated far back on the forehead; and between them rises the crest-like tuft of hair from which the genus takes its scientific name.
In 1783 Boddaert printed at Utrecht a Table des planches enlumineez, 9 in which he attempted to refer every species of bird figured in that extensive series to its proper Linnaean genus, and to assign it a scientific name if it did not already possess one.
The division seems to have been instituted by this author a couple of years earlier in the second edition of his Handbuch der Naturgeschichte (a work not seen by the present writer), but not then to have received a scientific name.
Its scientific name is Clupea (or Alosa) menhaden and Brevoortia tyrannus.
It derives its scientific name from a curious beak-like appendage at the end of the stigma, in the centre of the flower; this appendage though solid was supposed to be hollow (hence the name from 46a, a bladder, and stigma).