468 



ON TlIE BIEDS OF THE PHILIPPINES. 



[1S77. 



P.Z.S.1877, from that species in having a corrugated plate on the basal part of the sides of the mandible, by 

 the casque being narrower, by the general dimensions being less, and by the anterior three fourths 

 of the mandible and about the anterior half of the maxilla being white, and the rufous of the 

 thigh-coverts, of the head, nape, and throat being much darker. 



d adult. Casque, posterior half of maxilla, rami of mandible, and posterior part of gonys 

 blood-red. Corrugated lateral plates of mandible darker blood-red. Remainder of bill pale 

 straw-white. Feathers surrounding the eye and clothing the base of mandible, chin, and gullet 

 black. Head, nape, and upper part of breast, lower throat, and thigh-coverts deep rufous 

 maroon. Upper throat tawny. Breast black. Interscapulars and wing-coverts ruddy brown. 

 Upper tail-coverts ferruginous. Under tail-coverts and vent light dingy rust-colour. Quills 

 black ; secondaries narrowly margined externally with ferrugiuous, and tipped with rusty white. 

 Kectrices ruddy ochre. 



2 adult. Like male, as is the case in £. Jiydrocorax. 



2 juv. Differs chiefly by the casque not being so fully developed anteriorly and not over- 

 hanging the true culmen, and in its culmen being dingy brown and grey-brown, with indications 

 of red on the casque and at base of mandible. The grooved lateral plates have not appeared. 

 The tarsus and feet in all appear to have been blood-red. 



In true B. hydrocorax slight indications of grooves are perceptible on the walls of the base 

 of the mandible ; but they are cut in the substance of the mandible, and do not form part of an 

 adhering plate. 



17. Lanius lucioxensis. 



Lanius lucionensis, Linn., S. N. i. p. 135. no. 10 (1766); Walden, t.c. p. 171. no. 72, 

 t. xxix. f. 1 [antea, p. 336]. 



[No. 379, 6 . Zebu. Eyes hazel.] 



18. AfiTAilUS LEUCOHHYNUS. 



Lanius leucorhynus, Linn., Mantissa Plant, p. 524, "Imarishia" (1771); Walden, t. c. 

 p. 174. no. 73 [antea, p. 338]. 



[No. 369, d .) 

 N 370 2 (^^°^- -^y^^ brown. Stomachs had insects.] 



Not hitherto recorded from Zebu. Philippine examples of this species exhibit two slightly 

 differing phases of dress, one in which the upper plumage is of a light bluish and cinereous 



