] 40 Mr. A. R. Wallace 07i the 



tains^ where I found the nests of this species, among debris 

 carried down by the melting of the snows, on Ischika, one of 

 the highest points of that range. I have once or twice observed 

 the Rock Thrush in the Island of Corfu, where it is highly 

 prized as a singing bird. 



75. Common Wheatear. [Saxicola oenanthe.) 



Arrives in Epirus in March ; common during the summer 

 months. 



76. Russet Wheatear. {Saxicola stapazina.) 



More abundant than the preceding species in Epirus during 

 the summer. 



77. Eared Wheatear. {Saxicola aurita.) 



This is the least common of the three species of Wheatear 

 that I have observed in these parts. It arrives at the same 

 time as the preceding. 



78. Whinchat. {Pratincola rubetra.) 



79. Stone-chat. {Pratincola rubicola.) 



Both these species are common in summer, and I have occa- 

 sionally observed the latter in winter, in Corfu and Epirus. 



80. Alpine Accentor. {Accentor alpinus.) 

 Common in the Acroceraunian mountains in May 1857. 



[To be continued.] 



XVI. — The Ornithology of Northern Celebes. 

 By Alfred Russel Wallace *. 



I have just returned from a three months^ exploration of 

 Menado and the surrounding district of Minahassa, forming the 

 north-eastern extremity of Celebes. My collection of birds is 

 not a very extensive one, but it comprises some very interesting 

 species, and I have made some observations on habits and eco- 

 nomy which I think will be interesting to your readers. 



I first visited the most elevated district, taking up my residence 

 in a village at an elevation of 3500 feet. The weather, howevei*, 



* Commuuicated in a letter from Mr. Wallace to the Editor. 



