The fourth principal type, the dromæognathous, is not found in any Indian birds.
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dromæognathous — … Useful english dictionary
dromæognathism — noun /ˌdɹɒmiːˈɒɡnəθɪzm/ <ref name= OED /> The particular arrangement in palatal structure typified by the emu and the other (now extinct) species of the genus Dromaius.<ref name= OED /> Dromæognathism (Gr. , dromaios, a runner : genus … Wiktionary
Crypturi — Cryp*tu ri (kr[i^]p*t[=u] r[imac]), n. pl. [NL., fr. Gr. krypto s hidden + o yra tail.] (Zo[ o]l.) An order of flying, drom[ae]ognathous birds, including the tinamous of South America. See {Tinamou}. [1913 Webster] … The Collaborative International Dictionary of English
