616 Recently published Ornithological Works. 



to have been the victors in this friendly contest, we shall all 

 appreciate the increase in our knowledge of the avifauna of 

 these most interesting island-groups thus attained. When, 

 however, it comes to a comparison of dates of publication, it 

 must be recollected that the numbers of our much-valued 

 contemj)orary, the ' Journal fiir Ornithologie,^ are habitually 

 issued many months after date* ! 



After some preliminary remarks, Dr. Koenig gives us his 

 field-notes taken during the voyage to Madeira and during 

 his sojourn on the island. To this follows a list of the 32 

 breeding-birds of Madeira and notes on their habits. In his 

 third chapter. Dr. Koenig proceeds to TenerifFe, and com- 

 mences this part of his essay with general remarks on the 

 Canaries and their natural history. These are concluded 

 with a list of the 139 species of birds as yet known to occur 

 in the island of Teneriffe. The " Special Part,^^ which fol- 

 lows next, contains the author's copious notes on the 7Q 

 species which he met with personally. On these we may 

 remark that Cypselus pallidus, Corvus tingitanus, and Phyl- 

 loscopus fortunatus are recognized as "good species." That 

 Glaucidium siju of Cuba has ever occurred in Teneriife we are 

 hardly prej)ared to admit, even on the authority of Don Ramon 

 Gomez, unless it was brought there by an onion-boat ! As 

 Dr. Koenig allows that the Regulits of Teneriffe was first 



* Mr. Waterhouse furnishes me with the following list of the dates at 

 which parts of the J. f. O. 1887-1890 were received at the Library of 

 the Zoological Society of London : — 



