446 Messrs. Salvin and Sclater's Index to the 



3. On some new or rare Bird's Eggs. P. Z. S. 1871, pp. 

 55-58, t. iv. 



Contains descriptions of fourteen species of eggs of consider- 

 able interest, eight of which are figured, viz. those of Nume- 

 nius borealis, Calidris arenaria, Numcnius hudsonicus, Larus 

 franklini, Xema sabinii, Chroicocephalus Philadelphia, Chionis 

 minor, and Theristicus melanops. 



4. Exhibition of some rare European Bird's Eggs. P. Z. S. 

 1871, pp. 546-547. 



Contains a note on supposed eggs of the Sanderling [Calidris 

 arenaria) collected by the German North-Polar Expedition. 



5. On a Remarkable Sexual Peculiarity in an Australian Spe- 

 cies of Duck. P. Z. S. 1871, pp. 649-651. 



The bony enlargement of the trachea is observed to exist in 

 both sexes of Anas ptunctata, though the form differs slightly in 

 each sex. The term Virago is suggested for the group present- 

 ing this peculiarity. Woodcuts of the trachea and posterior 

 end of the sternum of both sexes are given. 



6. Exhibition of the Humerus of a Pelican f-om the Cambridge- 

 shire Fens. P. Z. S. 1871, p. 702. 



7. On certain Species of Falconidfe, Tetraonidse, and Anatidse. 

 Proc. Ac. Phil. 1871, pp. 94-100. 



Relates to Falco gyifalco and its allies, the different species of 

 Grouse allied to Lagopus albus, and to Anser ferus and its allies. 



8. On a Method of Begistering Natural-History Observations. 

 Trans. Norf. & Norw. Soc. 1871, pp. 24-34. 



A fac-simile sheet, as formerly used by the author, shows the 

 method employed, which, if kept during a series of yeai-s by a 

 competent observer constantly resident in the country, could 

 hardly fail to produce some interesting and perhaps some un- 

 expected results. The observations, we need hardly say, apply 

 chiefly to birds. 



Nicholson, Henry Alleyne. 



A Manual of Zoology for the use of Students, with a general 

 Introduction on the Principles of Zoology. Edinb. & Lon- 

 don : 1871. 2nd ed., small 8vo. 



Six chapters are devoted to the consideration of the Class Aves. 



