Berry, Frederick H.2009-03-092009-03-091964-10Berry FH. 1964. A hypomaxillary bone in Harengula (Pisces: Clupeidae). Pac Sci 18(4): 373-377.0030-8870http://hdl.handle.net/10125/7149The herring genus Harengula Valenciennes (as herein restricted) contains five bilateral pairs of bones in the upper jaw (Fig. 1A) . Most other clupeid fishes contain three or four such pairs of bones: premaxillary, maxillary, and one or two supramaxillaries. The extra pair of bones in Harengula is here termed the hypomaxillary. The hypomaxillary also occurs in the clupeid genera Pliosteostoma Norman and Pellona Valenciennes, and its presence has been used to distinguish these two genera from other genera. The presence of the hypomaxillary in Harengula and its usefulness as a taxonomic character in separating Harengula from other closely related genera previously has been overlooked.en-USArticle