104 Recently published Ornithological Works. 



13. Krukenberg on the Colouring -matters of Feathers. 



[Die Farbstoffe der Federn. Mitth. III. Von Dr. 0. Fr. W. Kruken- 

 berg. Vergl.-pliysiol. Studien in Heidelberg, ii. Reihe, 2. Abth.] 



This third coaimunication of Dr. Krukenberg, who has 

 ardently taken up the chemical side of the explanation of 

 organic colours, contains the following very interesting 

 investigations : — the colouring-matters of the Paradiseidse 

 and of the Psittacidse; the blue colour of the naked parts of 

 Casuarius and of the feathers of Irene jmella (merely optical 

 colours); the yellow pigment in the green feathers of Picus 

 viridis ; coloration of the skin of birds, &c. In conclusion a 

 summary of the metamorphoses and spectra of various pig- 

 ments in tabular arrangement are given. 



14. Menzbier on a new Grouse. 



■- \_Tetrastes ffryseiventris, n. sf. Von M. A. Menzbier. Bull. Soc. Imp. 

 Natural. Moscou, tome Iv. (1880) p. 105.] 



Tetrastes griseiventris is a representative form of T. bonasia 

 from Tscherdyn in the Government of Perm, Russia. Thirteen 

 examples have been examined. It is likewise distinct from 

 T. albigularis of Kamtschatka and T. severtzowi of China. 

 The specific characters are given at full length. 



15. Menzbier^ s Ornithological Geography of Russia. 



[Ornitologicheskaya Geograpbiaya Evropeiskoye Rossiye. Michaila 

 Menzbiera. Cbast Pervaya. Moskva : 1882. (Ornitbological Geogra- 

 phy of European Russia. By Michael Menzbier. Part I. Moscow : 

 1882.)] 



This work, unfortunately for those ornithalogists who are 

 only acquainted with western languages, is in Russian ; but we 

 will endeavour to give some account of it. The first portion 

 of the volume, which contains 520 pages, is evidently devoted 

 to preliminary remarks on the general subject, references 

 being frequently made to works on geographical distribution, 

 both in English, French, and German. The second half of 

 the book treats of each species seriatim, the geographical 

 distribution of each Russian bird of prey being given, with 



