392 THE PROCEEDINGS OP THE LINNEAN SOCIETY 



description of this form under that name. The longitudinal stripe 

 on the chest band are more or less visible in all the specimens. 



37. Sauloprocta tricolor. Evidently the same as the New 

 Ireland species S. melaleuca, of which it is a synonym ; it differs 

 very slightly from the Australian Sauloprocta motacillokles. 



38. Campephaga humeralis, Gould. 



39. Campephaga jardinii, Rilppell. 



40. Graucalus melanops. 



41. Artamus leucopygialis, Gould. 



42. Dicrurus carbon arius, Mull. In plumage the same as the 

 New Ireland species, except in the bill, which is shorter. 



43. Vanga mentalis, Salvad. Very like V. argentea, but 

 differing from Mr. Gould's description of that species in having 

 the chin black, a patch of white at the base of the primaries 

 extending and widening out considerably on to the seventh 

 quill, and in having the extreme base of the tail white ; the back is 

 also black, and not grey as in Vanga argenteus. 



Total length, 10 in.; bill, 1*2 in.; wing, G in.; tail, 4*5 in.; 

 tarsus, 1"2. 



44. Vanga quoyi, Less. 



45. Gracula dumontii, Less. 



46. Corvus ORRU. 



Quite the same as those received from New Britain. 



47. Gymnocorus senex, Less. 1 These specimens differ con- 

 siderably in depth of color from the plates in the Voyage de la 

 Coquille, some birds being almost white, others of a dark brown. 



48. Donacola nigriceps, sp. nov. Closely allied to Castaneo- 

 ihorax, but having all the head and neck jet black, with a small 

 hastate spot of whitish on the feathers of the crown ; the upper 

 tail coverts, also, are of brighter orange buff. On the whole, the 

 Port Moresby birds are smaller, and of a much darker tint of chest- 

 nut on the breast ; sides and flanks, barred with white, and tinged 

 with chestnut ; under tail coverts black. The young bird shot with 

 an adult has the head and neck of an ashy tint, becoming brown 

 on the chest, and deepening into black on the abdomen and under 

 tail coverts ; the back and wings are of a dark chocolate brown ; 



