Folia Historico-Naturalia Musei Matraensis - A Mátra Múzeum Természetrajzi Közleményei 21. (1996)

condylus medialis is most arch shaped in the Red-footed Falcon and Merlin, (medial view, Plate XLIV, Figures 22-24) and the plantar edge of condylus lateralis is less pointed than in the Kestrel and Hobby (lateral view). The diameter of the condylus medialis and cond. lateralis is most different in the Hobby and Merlin, while the least different in the Kestrel (distal view). Summary Falco subbuteo: - the phalanx is long and thin, - the proximal end of the bone is very high, the dorsal side has a protrusion, the tuberculum extensorium is great, - the crista dorsalis medialis is great, high, the cr. dors, lateralis is small, hardly visible, - the condylus lateralis extends more in distal direction, than the cond. medialis, and bends outwards in lateral direction, - the capitulum phalangis is high in dorso-plantar direction, - the diameter of the condylus medialis and cond. lateralis differs considerably (distal view). Falco columbarius: - the proximal end of the bone is high, - the crista dorsalis medialis is great, high, the cr. dors, lateralis is small, hardly visible, - the condylus lateralis extends more in distal direction, than the cond. medialis, and bends outwards in lateral direction (dorsal and distal view), - the capitulum phalangis is low in dorso-plantar direction (medial view), - the diameter of the condylus medialis and cond. lateralis differs considerably (distal view). Falco tinnunculus: - the phalanx is short and thick, - the proximal end of the bone is wide and flat (proximal view), - the crista dorsalis medialis is smaller, short, the cr. dors, lateralis is higher, - the condylus medialis and cond. lateralis are located in one line, or the cond. lateralis extends slightly further (dorsal view), - the capitulum phalangis is large, and the highest in this species in dorso-plantar direction (medial view), - the difference between the diameters of the condylus medialis and cond. lateralis is small (distal view). Falco vespertinus: - the phalanx is short and relatively thick, - the proximal end of the bone is wide and flat (proximal view), - the crista dorsalis medialis is smaller, short, the cr. dors, lateralis is highest in this species, - the condylus medialis and cond. lateralis are located in one line, (dorsal view), - the capitulum phalangis is small, and arch shaped (lateral view). Falco naumanni: - the phalanx is sort, slightly thicker than in the Red-footed Falcon, - the articular surface of the proximal end of the bone is wide and flat (proximal view), - the capitulum phalangis is small, and arch shaped (medial view), - the difference between the diameters of the condylus medialis and cond. lateralis is small (distal view). 54