194 Recently published Ornithological Works. [Ibis, 



A curious Cliff-Swallow discovered by Preuss in Cameroon 

 and named l)y Reiclienow Lecythoplastes jjreussi has never 

 been rediscovered until Mr. Chapin met with a consider- 

 able flock at a rest-house in the upper Welle District. 

 Though the two localities are 1300 miles apart Mr. Chapin 

 was unable to find any differences of importance, and 

 he believes that the Welle and the Cameroon birds are 

 identical. 



A final note is a useful list of species whose range 

 extends from the Cameroon across the Congo forest to 

 upper Welle and even the Lake regions beyond. 



Chapman on neiv South American Birds. 



[Descriptions of proposed new Birds from Colombia, Ecuador, Peru, 

 and Brazil. By Frank M. Chapman, Amer. Mus. Novit. no. 18, 1921, 

 pp. 1-12.] 



This paper contains descriptions of new forms of South 

 American Birds, which the author's studies in the British 

 Museum during May and June of last year has enabled 

 him to make, after comparing material in the American 

 Museum with that in our own. Of one form indeed, 

 Lpptasthenura striata cajabambce from Peru, the type is 

 actually in the British Museum. 



Among the other birds described are: Nothocercus fusci- 

 pennis, Penelope barbata, Picumnus parvistriatus, Thamno- 

 philus zarumtE, Leptasthenura xenothorax, Automolus celic<s, 

 and Sporophila insulata, all described as new species, as well 

 as a number of othei's described as subspecifically distinct 

 only. 



Chapman on Peruvian Birds. 



[The Distribution of Bird Life in the Urubamba Valley of Peru. 

 By Frank M. Chapman. Bull. U.S. Nat. Mus. no. 117, 1921, pp. 1-138 ; 

 map and eight plates of photographs.] 



This essay by Dr. Chapman forms part of the results of 

 an expedition organized by Yale University and the National 

 Geographical Society of America under the direction of 



