552 ON THE OENITIIOLOGY OF THE PHILIPPINES. [1877. 



Avith dirty rusty. An old Surigao female has several of the secondary quills margined with 

 ferruginous. A young Surigao male has a small part of the outer webs of the fourth, fifth, and 

 P.Z.S.1877, sixth primaries edged albescent. An old Surigao male has the thigh-coverts, ventral region, and 

 p. S2G. under tail-coverts pale rufous, and most of the upper tail-coverts as in P. panini, otherwise as in 

 typical P. affinis. In a Butuan and a Surigao male the middle pair of rectrices, with the 

 exception of the basal black band, are rufous throughout, the normal black terminal band being 

 only indicated by black blotches. The new rectrices are pale fulvous white instead of ferruginous 

 when they first come in. The number of grooves on the mandible varies from three to four. 

 The extreme altitude of the bill, ending at the nostril, is 1'06, whereas in P. imnini it is l"o7. 



30. Aktamus leucokhtnus (73). 



[Mouth of Butuan river, $ , May ; h. Surigao, s , May.] 



31. Geaucalus stkiatus (74). 



[a. Placer, d , July. Iris light Naples yellow, b. d , July. Iris dirty brownish white.] 

 The North-Mindanao individuals have the wing somewhat shorter than typical examples. 

 The example b is in first plumage, with the whole under surface barred with black. The others 

 (a) have only the under surface, commencing with the lower breast, banded with black. 



32. LaLAGE DOMINICA (76). 

 [Butuan, d , May ; b. d , June.] 



33. DiCRUEUS STEIATUS. 



Dicrurus striatus, Tweeddale, P. Z. S. 1877, p. 545. no. 20. [Antea, p. 469.] 



[Butuan, s S , May. Iris crimson ; bill steel-black. b. Surigao, d , May. c. May, 



d juv. Iris brown.] 



Sexes alike. The young female (c) has the breast uniform black ; no traces of metallic 



striation. 



34. Leucocekca nigeitoequis (83). 

 [Surigao, ? , June.] 



35. Ctoenis philippinensis. 



Cijornis 'philippinensis, Sharpe, Tr. L. S. ser. 2, Zool. i. p. 325. 

 [Butuan, d 2 , May.] 



The North-lSIindanao examples agree best with those from Luzon (Monte Alban). In 

 dimensions they are equal. 



36. Htpotiitmis azurea (85). 

 [Butuan, $ , May ; Placer, d 2 , July.] 



