128 1XHKH1TAXCK, FKIITIUTY, AXD SEX IN PIGEOXS. 



TAHI.F. 101 (ciin I ii< tied). 



Pair S. 



cf Zen, carolinensia (4) ; hatched 0, 16/90. 

 9 Alha-ris. X ris-alba hyb. (B 2). 



A 1. 4/12/08; not tested. 1) 1. 0/:i/!8; no development. G 1. 5/31 lone some development, 



A 2. 4/14/98; not tested. D 3. 6/5/08; no development. G 2. 0/2 / other ? no development. 



B 1. 4/20; soft shell. E 1. 0/17; no development. H 1. 0/11; no development. 



B 2. 4/22; soft shell. E 2. 0/19; no development. H 2. 6/lli; no development. 



C 1. 5/9; no development. F 1. 5/5/99; no development. 



( ' 2. 5/11; no development. F 2. 5/7/99; no development. 



9 Zen. carolinensU (II-K '2); 7/5/9S given to above male, June 1899. 



A 1. 7/24/99; hutched, no record. 1! 1. 8/30; hatched, no record. 



A :.'. 7 _'ti 09; hatched, no record. B 2. 9/1; no trace of development. (CO 18) 



TABLE 105. 



cf Zenaida X Zenaidura hyb. (ZZ 1) ; 4/10/0.>; 3/22/09; 47 mo.; 14 rectrices. 

 9 St. risoria (purity ?); age not recorded; 12 rectrices. 

 A 1. 5/1/08; no development. 

 cTA 2. 5/3/08 ZZ-R 1 12 rectrices, 2 or 3 dull vestiges of spots (see pi. 20). 



B 1. 5/31 ZZ-R 2 ("down "more as in sire). 



B 2. 6/2 "developed near to hatching, strength failed"; (complexion lighter than Zenaida). 



C 1. 7/3 ZZ-R 3 12 rectrices; 3 traces of spots (tertials) ; dead 12/5/08 5 mo. 



C 2. 7/5 developed some days, but failed to hatch. 



cTD 1. 8/7 ZZ-R 4 dead 9/8/09 13 mo. 



_ri> 2. 8/9 ZZ-R 5 dead 9/14/09 13 mo. 



E 1. 9/16 ZZ-R 6 14 rectrices, short as in Zenaida. 



?E2. 9/18 ZZ-R 7 12 rectrices ' dead 8/17/09 11 mo. 



F 1. 1/1/09; failed to hatch. G 1. 2/13; hatched, thrown from nest; "strong looking," dark. 



F2. 1/3/09; failed to hatch. G 2. _' 15; nearly hatched (exposure); "strong looking," dark. 



H 1. 2/23; hatched; thrown from nest, died. 

 H 2. 2/25 ZZ-R 8 12 rectrices. (C 5) 



1 "Seems to be a male with two minute globular testes; am unable to be certain of their being testes." 



TABLE 106. 



cT Zenaida X Zenaidura hyb. (ZZ 4) ; hatched 5/20/05; 9/13/09; 52 mo. 

 9 St. alba (93) (purity ?Y. 



?A 1. 4/23/08 ZZ-A 1 dark; 14 rectrices; apparently no gonads > 5/24/09 13 mo. 



A 2. 4/25; developed, but died in shell about 24 hours before time to hatch. 



B 1. 5/23; no record, certainly not hatched. 



?B2. 5/25 ZZ-A 2 dark; apparently no gonads 2 8/4/09 141 mo. 



C 1. 6/21; no development. 

 C 2. 0/23; no development. 



D 1. 7/4 ZZ-A 3 dark, not quite as Zenaida; 14 rectrices 3 6/3/10 23 mo. 



D 2. 7/0; no development. 



c? or c? 9 E 1. 9/2 ZZ-A 4 alive 10/1/14 73+ mo. 



E 2. 9/4 ZZ-A 5 dead or disappeared before 2/5/11. 



F 2 5/21 r one = ZZ-A C; no other record; oilier not hatched. 



G 1. 6/24; no development. H 1. 7/9; no development. 



G 2. 0/20; no development. H 2. 7/11; no development. (CC 8) 



1 " I find no testicles, no ovary. It may be that very obscure rudiments of sex-organs exist, but I can not distinguish 

 anything of that kind." 



! "I find nothing that looks like testicles or ovary." 



1 "A marginal chequer (spot) was found on the third tertial of each side, this not quite reaching middle of web and 

 becoming thin and shadowy along inner boundary." 



TABLE 107. 



cf Zenaida-Zcnaidura X Zenaida X Zenaidura-Zenaida (mutant) hyh. (2 Z-3 ZN 3) ; 8/1/09. 

 9 Riaoria-albft X risoria-alba (!-")). 



A 1. S/ 15/10 Z-ZNR 1 "one vestigial spot on tortial"; disappeared or dead before 2/5/11. 



?A 2. 8/17/10 Z-ZNR 2 "no vestigial spot seen"; dead 10/25/14; no gonads whatever. 



A 1. 9/1 ZNZ-RA 1 apparently died very early. 



A 2. 9/3 ZNZ-RA 2 apparently died very early. (EM 9, Misc. 2, XX 6) 



B 1 and B 2 "laid about Nov. 5, 1910. Birds still sitting on them Nov. 20, but there is no development; 

 fertility lowered at end of season" (italics are the author's). 



