(Motacillidae; Ϯ Yellow-breasted Pipit H. chloris) Gr. ἡμι- hēmi-  small  < ἡμισυς hēmisus  half; genus Macronyx Swainson, 1827, longclaw; "Still another genus remains to be dealt with, namely, HEMIMACRONYX gen. nov., type Anthus chloris Sund., which is characterised by its yellow breast and slender toes and claws, which are long and, in common with the colour, remind one of the Yellow Wagtails. It has little in common with the other plainer coloured Pipits and would seem to be allied to Tmetothylacus, which differs in having the lower part of the tibia not feathered, and is a link between the Pipits and the Longclaws (Macronyx)." (A. Roberts 1922). 

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 12 December 2018).