454 Recently published Ornithological Works, 



Dr. Hartlaub gives in his prefatory remarks a very useful 

 list of 43 papers relating to the ornithology of this part of 

 Eastern Equatorial Africa. 



78. Lawrence on the former abundance of Migrants near 

 New York. 



[An Account of the Former Abundance of some species of Birds on 

 New York Island, at the time of their Migration to the South. By- 

 George N. Lawrence. ' The Auk/ vi. p. 201.] 



The veteran ornithologist, Mr. G. N. Lawrence of New 

 York, records his early recollections of the abundance of 

 autumnal migrants flying south in former years, when his 

 home was on the high ground to the north of Manhattan- 

 ville, and fronting the Hudson River. He was allowed to 

 have a gun first in 1820 (!) and appears to have used it with 

 great success on the enormous flights of Passenger Pigeons 

 and other birds then met with. At the present time a single 

 Passenger Pigeon would be a rarity in this district. 



79. Lawrence on a new Swift and a rare Petrel. 



[Description of a new Subspecies of Cypselidae of the Genus Chcetura, 

 with a Note on the Diablotin. By George N. Lawrence. ' The Auk,' 

 viii. p. 59.] 



]VIr. Lawrence separates the Cheetura of Guadeloupe from 

 its allied form of Dominica as Chaetura dominica colardeaui. 

 He adds a note on the " Diablotin " of Guadeloupe, which, 

 according to the information received from Dr. Colardeau, is 

 probably (Estrelata hcesitata. Dr. Colardeau does not 

 believe that this bird is quite extinct in Guadeloupe. 



80. Leverkiihn on strange Eygs in Birds^ -nests. 



[Fremde Eier im Nest. — Ein Beitrag zur Biologic der Vogel. Von Paul 

 Leverkiihn. Nebst einer bibliographischen Notiz uber Lottinger. 8vo. 

 Berlin und London : 1891.] 



In a memoir of some 200 pages, Herr Leverkiihn dis- 

 cusses what is to us a somewhat novel ornithological 



