(Psittacidae; Ϯ Slender-billed Parakeet E. leptorhynchus) Gr. ἑνικος henikos  singular; gnathos  lower jaw (see Leptorynchus); "ENICOGNATHUS, n.  Psittacara, King. Sittace, Wagl. Leptorhynchus, Swains.a (1837). Psittacaria, Meyen.   E. leptorhynchus, (King,) n. Lear's Parrots, pl. 11. P. rectirostra, Meyen. L. ruficaudus, Swains.   ...  aPreviously employed." (G. Gray 1840); "Enicognathus G. R. Gray, Gen. Bds., 1840, p. 51. Type, by monotypy, E. leptorhynchus (King) = Psittacara leptorhyncha King." (Peters 1937, III, 199).  
Var. Enicognathas.
Synon. Hylorynchus, Leptorynchus, Microsittace, Stylorhynchus.

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 www.hbw.com on 11 December 2018).