. Catalogue of the Birds in the British Museum. . Leg of Cotile riparia, to show tarsal tuft. Leg of C. rupestris. Range. Europe, Africa, and Northern Asia. From Egypt, through Palestine and Persia to Central Asia, the whole of India, Burmese countries; China. North America and South America to Brazil. Key to the Species, a. No white spots on the tail; under tail-coverts white. a'. With a brown collar across the fore neck, separating the white throat from the white belly. a". Under wing-coverts brown: sizesmaller; wing 3-55-4-35 inches: a tiny tuft of feathers at back of tarsus just above
. Catalogue of the Birds in the British Museum. . Leg of Cotile riparia, to show tarsal tuft. Leg of C. rupestris. Range. Europe, Africa, and Northern Asia. From Egypt, through Palestine and Persia to Central Asia, the whole of India, Burmese countries; China. North America and South America to Brazil. Key to the Species, a. No white spots on the tail; under tail-coverts white. a'. With a brown collar across the fore neck, separating the white throat from the white belly. a". Under wing-coverts brown: sizesmaller; wing 3-55-4-35 inches: a tiny tuft of feathers at back of tarsus just above the , ^^-^^^.^-^^ ^ gg^ h". Under Wing-coverts white : size larger; ' -^ ' ^ wino- 5 inches: no tuft at base of tarsus dncta, p. 101. , . •. ; fpahtdicola, p. 102. 5'. With no pectoral collar ., :'•..: :V. ^ ^S/p'^Si b. With white spots on aU but the centre and ^oryam.'p. 104. outer tail-feathers; under tail-coverts dark "- brown, c'. Throat and chest deep rufous, contrasting with sooty-brown abdomen. I/•«%«/«, p. 106. c". Larger: throat clear uniform rufous . Vw^ / ^_ jq?. d". Smaller: throat dull rufous streaked ' -^-^ with brown concolor, p. 108. d'. Throat and chest pale isabeUine or sandy buff, fading into the shghtly deeper colour of the abdomen. e". Laro-er; wing 4-9 inches: chin minutely spotted with brown rupestris, p. 109. f. Smaller; wing 4-5-4-55 inches; chin and throat uniform ohsoleta, p. 111. 1. Cotile riparia*. L'Hu-ondelle de rivage, Briss. Orn. ii. p. 506 (1760); Dauhent. PI. Enl. vii. pi. 543. fig. 2. being apparently the presence or absence of a tiny tuft of feathers at the posterior end of the tarsus, which is absent in the Orag-Martms {BMis), but present in the Sand-Martins {Cotile), where it seems to indicate a slight affinity to the feathered-legged Martins (ChcUdon). * For a complete record of American references to this species the reader is referred to Coues, B. Color. Vail. p. Please note that these images are
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