166 INHERITAXCK, FERTILITY, AND SEX IN PIGEONS. 



over, very few embryos. The single surviving bird was a male ; that this bird was 

 an intermediate of the white-winged pigeon and the ring-dove in color and general 

 appearance is made clear by its illustration in color in pi. 30. 



The sex-ratio and width of cross. — ^The sex-ratios from the crosses already treated 

 in this chapter are summarized in table 167^ The data for the breeding of the pure 

 forms treated in the second part of this chapter arc also placed in the table to facil- 

 itate a comparison. When the cross was between families the progeny were all 

 males; when between genera there were 17 males to 9 females; from matings of 

 individuals of the same species there were 53 males to 53 females. Here the evidence 

 is again quite clear that the proportion of male offspring increases as forms more 

 and more widely separated phylogenetically are chosen for parents. 



Table 163. 

 cf seneg.-alba X risoria (TS-A-R 3) 

 9 St. risoria; age unknown. 



cf 9A1. 5/9 TSARRli color dark dead 1/28/12; hermaphrodite (?). 



cfA2. 5/11 .TSARR2 color lighter than A 1; dead 4/26/13. 



?9B 1. 6/24 TSARR3 pale roseate blond stolen 7/19/12. 



9B2. 6/26 TSARR4 gray blond dead 2/24/12. 



C 1. 8/21 TSARR5 dark color, remarkably short, thick beak.' 



C 2. 8/23 TSARR 6 color of blond ring, remarkably short, thick beak. 



' Had two somewhat flattened sex-glands about 8 by 2 or 2j mm. Each certainly contained ova, though the anterior 

 part of each gland was testicular in appearance, the few observable small ova being scattered through the posterior part only. — 

 Editor. - * 



' The birds from C I and C S probably died early, before 3 mo. old ; but this is not certain. — Editor. 



T.\BLE 164. 

 (f senegalensis-alba (7) ; 6/1/09; 9/23/14; 64 mo. 

 9 Sp suratensis"(1908). 

 9 A 1. 4/12/10; light blond; neck-mark intermediate; dead 6/28/10. 



A 2. 4/14/10; no development, 

 cf B. 6/10; light ruddy blond, trifle larger than ring (toward dam); (cold); 11/11/10. 

 cfC. 7/26; rather dark; neck-mark, etc., toward dam; dead (cold) 11/14/10. • 



D 1. 9/22; hatched, but died early (cold 7). 



D 2. 9/24; hatched, but died early (cold ?). (AA) 



_ Table 10,5. 



Pair 1. 

 d" Ect. migratorius (I A) 7/2K-29/96. 



9 alba-risoria X risoria-alba (L 2) ; t\< 



A. 1/26/97; broken. I 1- (>/5lboth developed; one pricked shell, 



„.„,., ^ , , 12. 6/7/ but was accidentally crushed. 



B 1. 3/1; hatched. ' •' 



B 2. 3/3; no development. J 1. 6/28; developed; died just before hatching. 



„,_.„,, ^ J 2. 6/30; developed; died just before hatching. 

 C 1. 3/13; no development. 



C 2. 3/15; no development. K. 7/10; no development. 



D 1. 3/27; developed; died before hatching. L. 8/4; hatched; dead 3 to 4 days. 



c? D 2. 3/29; hatched. ^j j g/,3. ^,^^j. p.^,,,,^ ,,atched. 



E 1. 4/9; hatched; died few hours. cf M 2. 8/15; hatched. 



E 2. 4/11; broken. . n. 9/8; no development. 



^ V 9- & ^^tl'."!,*'"' '''""^' O 1. 10/6; probably no development. 



£?■ F 2. 4/20 ; hatched. O 2 jQ/g . probably no development. 



cf G 1. 4/30; hatched. 



<fi G 2. 5/2; hatched; dead 11/30/99. cT P 1. 3/24/98; hatched; dead at few days. 



H 1. 5/10; no development. ^ P 2. 3/26/98; hatched; dead at few days (food ?). 

 d'H2. 5/12; hatched. 



• Only first crosses are included in this table. One or two of the crosses wliich yielded very meager data were 

 omitted for convenience in maintaining the form of the table. The single offspring from a subfamily cross (1 cf : 9 , 

 table 166, pair 4) is also omitted. 



