292 Recently published Ornithological Works. 



Chrysomitridops caruleorostris, Loxioides hailhui, Acrulo- 

 cercus hr meatus, and Vestiaria coccinea. 



We may remark that it is quite unnecessary^ nay, very 

 objectionable,, to quote printers^ errors as '' synonyms " — 

 tbere are enough synonyms without them. Moreover, the 

 specific name '' bailleui " is spelt correctly on the plate re- 

 ferred to (Ibis, 1879, pi. ii.), so that the quotation of it 



(under Loxoides bailleui) is not^exact. 



62. Winge on the Birds of Denmark. 



[Fuglene ved de dariske Fyr i 1888-89. 6te og 7de Aarsberetning 

 om danske Fugle. Ved Herluf Winge. "Vidensk Meddel. fra d. Naturh. 

 Forening Kjobenliavn, 1890, pp. 54, 106.] 



[Fiftli Report on Birds in Danmark, 1887. Compiled by Herluf Winge. 

 Ornis, iv. p. 369.] 



Since the death of Oluf Winge, his brother, Herluf Winge, 

 has become our chief authority on the birds of Denmark, and 

 students of the European Ornis should consult the carefully 

 drawn reports of which he has kindly sent us copies. Great 

 use, it will be seen, is made in Denmark, as regards orni- 

 thology, of the numerous Light-Stations round the coast. 



63. Zehntner on the Development of Cypselus melba. 



[Beitrage zur Entwicklung von Cypselus melba, nebst biologiscben und 

 osteologiscben Details. — Inaugural-Dissertation zur Erlangung der Doktor- 

 wiirde vorgelegt der boken pkilosopliiscben Fakultat der Universitat Bern 

 von Leo Zebntner. 8vo. Berlin : 1890.] 



The author very appropriately selected Cypselus melba and 

 its development as a thesis for his dissertation on proceeding 

 to the Doctorate of Philosophy at the University of Berne. 

 An excellent memoir is the result, giving us first full biolo- 

 gical details upon this well-known inhabitant of the Minster- 

 tower of the Swiss capital, and then chapters on its osteology 

 and the development of its embryo. The latter is of especial 

 interest on account of the abnormality of the typical Cyp- 

 selidse as regards the phalanges of the hinder extremities. 

 This is well explained and illustrated by numerous figures. 

 The most salient points of this thesis were given in a commu- 



