150 



SCANSORES. 



in the Straits of Corea. It appears to be most nearly related to 

 Picus feddeni from the Burma peninsula, and to Picus kalinowskii 

 from the Corean peninsula. 



Picvs richardd. 



These three Woodpeckers and half a dozen others form a compact 

 little subgenus, to which the name of Thriponaw has been applied. 

 They agree with all the species of the genus Picus in the position 

 of the nasal grooves, and of the angle of the mandible, as well as in 

 the length of the tail ; but they differ from Dryocopus and typical 

 Picus in the comparative length of their toes. In typical Picus the 

 reversed toe is the longest ; in Dryocopus the reversed toe is equal 

 in length to the nliddle toe ; whilst in Thriponax (as in the genus 

 Gecinus) the reversed toe is shorter than the middle toe. Somewhat 

 the same relation of the subgenera of Picus to each other and to 

 Gecinus is also observable in the distance between the nasal grooves. 



