西部大西洋から本属魚類は4種報告されている。H. schmidti, H. macrurusの両顎側歯は2列からなり,H. tenuisの尾部後部には小さな黒色斑紋がある(Ginsburg, 1951)。(上野・佐々木)
Distinctive characters:
Snout long and pointed, its length 3.4〜3.9 times of eye. Anus distinctly in front of mid-body, total length 3.7〜4.3 times of preanal length. Dorsal fin originated over gill-opening. Pectoral fin well developed, its length 2/3 of snout. Anterior nostril with tube near tip of snout; posterior nostril elliptical pore in front of eye. On vomer 7〜8 markedly long teeth medially with about 13 small conical teeth alongside; teeth on maxillary 2 rows anteriorly, 3 rows posteriorly; teeth on dentary 3 rows, those on innermost row are long and movable. Dorsal and anal fins black along posterior part of tail.
Distribution:
Western Atlantic.
Remarks:
Four species are known from the western Atlantic belonging to the genus Hoplunnis. H. schmidti and H. macrurus with 2 rows of teeth on maxillary and dentary; H. tenuis with tail sprincled with tiny dark spots on the posterior part (Ginsburg, 1951). (Uyeno and Sasaki)