194 Zoological Society. 



of Pteruthius and our Heterornis ; Heterornis at all events must take 

 place next Pteruthius ; but I think the true position of Stachyris is 

 among the Brachypods, near to Ibra and Icteria, with the forms 

 that we shall next give, and leading to the Crateropodans. 



Genus Mixornis, mihi. 



General structure of liira, but the bill quite different and Meruline ; 

 commissure and culmen subarched throughout ; tarse lower and not 

 exceeding the large thumb with its nail ; tail fully rounded. Type, 

 M. ruficeps, mihi. — Timalia gularis of Horsfield } 



M. ruficeps. — Body vernal green, passing to yellow on the throat 

 and breast, where also there are dark lines down the shafts of the 

 plumes ; cap, wing and tail brunescent ; bill bluish horn ; legs fleshy 

 grey ; iris hazel. Length 5| inches ; bill, | ; tail, 2^ ; tarse, \^ ; 

 central toe and nail, -^^\ hind, -^\ closed wing, 2|. Sexes alike. 



Genus Erpornis. 



General structure of the last, but the bill very straight, compressed, 

 with the culmen well-raised and keeled between the nares, as in Sta- 

 chyris and in lora, but less thick and rounded and the notch more 

 remote than in lora ; wings longer and more acuminate, with the 

 first three quills less equally gradated ; legs smaller ; tail even. 



Type, Erpornis wanthochlora, mihi. — Above vernal yellow, below 

 white ; legs and bill fleshy grey ; iris brown. Five inches long ; bill, J ; 

 tail, 2^; closed wing, 2| ; tarse, ^; central toe and nail, ^^ ; 

 hind, ^. Sexes alike. 



Remarks. — The above two forms are much related to each other, 

 as well as to Stachyris and the other Brachypodan clinging-birds ; but 

 Mixornis inclines towards Timalia among the Crateropodans, while 

 Erpornis is nearer to Stachyris and Zosterops, which last I consider 

 to be a Brachypod. Both inhabit the lower and central hills, and 

 feed on tiny tree-insects and their larvse and pupae. Their tongue 

 is simple. 



Genus Iwulus. 



General structure of Polyodon, but the bill, tongue and nares sim- 

 ple, and Brachypodan, not Meliphagian ; bill short and singly notched 

 at the tip. 



Type, Polyodon flavicollis or Yuhina flavicollis , as printed. 



Remark. — Polyodon is a strictly Meliphagian form. Ixulus is one 

 of the genera serving to connect the true Honey suckers with the re- 

 pent Brachypods, such as Zosterops, Chloropsis, &c., and which are 

 so like the former. 



Crateropodin^. 



Genus Pyctoris, mihi. 

 Bill short, strong, perfectly entire, arched throughout the culminal 

 and tomial lines ; nareal fosse and scale obsolete; rictus with very 

 strong short bristles ; orbits nude ; wings short and feeble, the first 

 two quills much, the next two little gradated ; third pair equal and 

 longest ; tail long, broad and gradated throughout ; legs and feet ty- 



