Vol. xlii.] 86 



Form No. 4, however, has since been subdivided, as it was 

 found that two distinct ground-colours occurred, i. e., reddish 

 and greyish. Form No. 3 could also be treated in the same 

 way, i.e., white and greenish ground. 



Meadow-Pipit {A. pratensis). A series of twenty-five 

 clutches, probably the most representative ever got together. 

 Leucitic and erythristic eggs were shown, as were also 

 heavily-capped and banded examples. Clutches with well- 

 defined longitudinal mottlings somewhat resemble certain 

 forms of type No. 5 of A. trivialis were conspicuous. 



Red-throated Pipit (A. cervinus). Six clutches of six, 

 and two of five, from S. Varangar; these do not materially 

 difPer from those of A. pratensis. The boldly-mottled 

 examples, however, appear to predominate, and some show 

 spots with penumbra, which is more characteristic of A. tri- 

 vialis. In this small series the eggs are on the average 

 larger than those of A. pratensis. 



Tawny Pipit (A. campestris). Thirteen clutches, mostly 

 from Turkestan and Rheinland ; these are closely allied to 

 certain forms of M. alba and M. lugubris ; the markings, 

 however, are sharper and bolder, with tendency to form caps. 

 Some examples have rich brown markings, others are dis- 

 tinctly greyish in general appearance ; they are also larger 

 than those of the above-mentioned two species of Motacilla. 



Watee-Pipit {A. spinoletta). Three clutches of four, 

 Hungary and Schlesien (Germany). These do not differ 

 from eggs of A. pretosus. ■• ' '.■<'. u<:-<- v, i2-^.''j 



Amkkican Water-Pipit (A. spinoletta ruhescens). Clutch 

 of four from Labrador. These do not differ from those of 

 typical A. pratensis eggs, though slightly larger. 



Rock-Pipit {A. pretosus). Sixteen clutches ; two of five 

 each from Kincardine, showing true erythrism ; ' Ibis,' 

 Jan. 1917, p. 185. 



The tvpical eggs do not show a very marked variation. 

 The size appears to be very constant, and considerably 

 larger on the average than those of A. pratensis. A clutch 

 of five with pale green ground and very pale brown mark- 

 ings were conspicuous. 



