446 Dr. E. Lonnberg on Birds from 



2. Metriopelia aymara (cl'Orb.). 



Three specimens in spirit. This Pigeon seems to have 

 been common. 



3. Metriopelia melanoptera (Molina). 



A specimen preserved in spirit agrees perfectly with the 

 description in the Cat. of Birds, but its measurements are 

 rather smaller. Wing 130, tail 85 mm. 



4. Ptiloscelis resplendens (Tschudi). 



In habits and manner of occurrence this bird resembles 

 the European Lapwing. It feeds on larvae and insects, but 

 more especially on a small crustacean (Hylea Icevis) . Usually 

 from eight to ten individuals are found together on the moist 

 meadows. When disturbed they fly screaming round and warn 

 other birds, being thus troublesome to the hunter. Speci- 

 mens were collected in October and November 1901. 



| 5. Charadrius dominicus Mull. 



Only one specimen was observed and shot, December 1st, 

 1901, on a rivulet near Moreno. 



4-6. .ZEgialitis semipalmata (Bp.). 



This bird occurred in small flocks of from ten to fifteen 

 individuals on the moist meadows, feeding on insects. 



-4-7. Heteropygia maculata (Vieillot). 



This Wader occurred in couples on the moist meadows, 

 feeding on insects and crabs. Specimens were shot at 

 Moreno in December 1901. 



8. Thinocorus orbignianus Geoffr. & Less. 



These birds live in flocks of from six to ten on the sandy 

 plains and fields of drifting sand. They resemble Sand- 

 Grouse, and have a remarkable similarity to the ground 

 which they frequent. They squat very close. 



A specimen from Moreno, shot in December 1901, is 

 somewhat abnormal. Its measurements are unusually small 

 (wing 125, tail 62, tarsus 16 mm.), but, on the other hand, 

 they are larger than those of T. rwnicivorus, while the tail 

 is even longer than in typical T. orbignianus. The skin 



