(Ciconiidae; Ϯ Asian Openbill Stork A. oscitans) Gr. αναστομοω anastomoō  to furnish with a mouth, with mouth wide-opened  < στομα stoma, στοματος stomatos  mouth; "82e. GENRE {Bec-ouvert.  Le bec long, épais, terminé en pointe; les mandibules repliées l'une vers l'autre, de sorte qu'il y a un vide dans le milieu & qu'elles ne se touchent que par les deux extrémités: la face nue ou garnie de plumes.    AnastomusRostrum longum, crassum, acuminatum; mandibulæ sibi invicem reflexæ, in medio hiantes, apice tantum & basi sese tangentes: facies nuda aut plumosa." (Bonnaterre 1791); "Anastomus Bonnaterre, Tabl. Encyc. Méth., Orn., 1, 1791, p. xciii. Type, by subsequent designation, Ardea oscitans Boddaert (Gray, List Gen. Bds., ed. 2, 1841, p. 87)." (Peters 1931, 1, 127). The Asian Openbill Stork has a long bill with a conspicuous gap between the central portions of the straight upper and recurved lower mandibles, an adaptation for feeding on freshwater snails (cf. “= a coming together, or bringing to a point, referring to bill” (Hockey et al. 2005)).   
Var. Anostomus.   
Synon. Apertirostra, Chaenoramphe, Hians, Hiator, Rhynchochasme.

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from on 14 December 2018).