514 Rev. F. C. II. Jourdaiu on the Catalogue of 



forms a perfect clutcli. In one species no fewer than a dozen 

 complete sets are catalogued, but they are not distinguished 

 in any way from other " odd lots " of eggs, although the 

 addition of the letter (c.) in small type to the number of 

 eggs would have conveyed this information. The measure- 

 ments also as given in this work are almost useless, and it 

 would have been far better to measure accurately a stated 

 number of specimens and give the average thus obtained 

 together with the maxima and minima. For such purposes, 

 the metric system is much better adapted than that of frac- 

 tions of the inch, and enables comparison to be made at 

 once with the Continental literature of the subject. 



In many cases (especially in the earlier volumes) the eggs 

 of allied forms are grouped together under one head, but, as 

 these can in most cases be separated by the localities given, 

 it has not been thought necessary to further indicate them, 

 and the present paper is chiefly devoted to erroneous identi- 

 fications and mis-statements. Purely nomenclatural questions 

 do not come within the scope of this article. 



Vol. I. (1901). 



P. 33. Under the heading Cuccahis chukar (J. E. Gray) are 

 placed five clutches of Partridges' eggs taken by 

 Kriiper, Seebohm, and W. H. Simpson on the Greek 

 mainland near Athens, Delphi, and Tzipiana. Here 

 C. chukar does not exist, but is replaced by the form 

 of C. saxatUis which inhabits the southern part of the 

 Balkan peninsula [C. saxatUis (jrceca). This error was 

 pointed out by Herr Otraar Reiser in 1905 in his 

 'Materialien zu einer Ornis Balcanica,' iii. p. 408. 

 Curiously enough, the distinctions between the eggs of 

 these two species are described and commented on; but 

 their significance seems to have been altogether over- 

 looked by the writer of the ' Catalogue.' 



P. 71. Turnix sylvatica (Desf.). The eggs obtained from 

 Favier by Seebohm were laid in confinement at 

 Tangier. 



