Vol. xlii.] 64 



as in the other two forms. In size somewhat intermediate : 

 wing 140-143 mm. 



Tijj)e. A male from Nd;ila Tando, northern Angola, 

 collected by Dr. W. J. Ansorge, 17 ^ept , 1008. Biit. Mus. 

 Keg. No. 1910/5/0/265. 



There is also in the Museum a femnle collected the same 

 day, and another male obtained at the same |tlace on 

 24 July, 1908. Two other Swifts collected by Petit at 

 Landana, in Portuguese ('ongo, are very similar, but are 

 smaller : wings 132 and 135 mm. They appear to be inter- 

 grades with M. c. streuheli. 



Mr. A. H. Evans exhibited three series of eggs of Cuculus 

 canorus. The first series was collected in collaboration with 

 Mr. W. A. Harding in. or in close proximity to, his (Manor 

 House) garden at Histon, C/ambs. Six hen-birds were 

 undoubtedly laying eggs there simultaneously. By great 

 good fortune those of one were so peculiar that they 

 gave certain proof of its laying eggs in the nests of four 

 different foster-parents; but a fact which is much more 

 important is that the dates show that the identical bird 

 returned to the same garden year after year. 



Another set of 5 clutches, of a less peculiar type, 

 strengthens the evidence, but here the Eobin is the usual 

 foster-parent (in three cases). In each of the other instances 

 only two clutches were exhibited, witli one egg which was 

 laid in an empty (deserted) Pied Wagtail's nest. 



The second series consisted of eggs taken on the Cam, a 

 few miles above or below Cambridge, by Mtssrs. Evans and 

 Richmond and Mills. These, taken singly or two in the same 

 nest during a period of several years, were of two tyj)es only — 

 one distinctly red, the other grey. All came from Reed- or 

 Sedge- Warblers' nests ; if two were found together, they 

 were always of different hues. The dates once more show the 

 return of the same hen in successive years, while the range 

 extends over four or five miles in two cases. 



The third series consists chiefly of eggs of two very curious 

 types exhibited by Mr. Bonhoie and Dr. Ticehurst. One type 



