SIOX-UMITKI) IIKKKDITV IN CKKTAIN CKO.^M 151 



The hybrids obtained from the blond and red ring crosses were further bred as 

 follows: 



A humilis-risoria male and another risoria-humilis male were muted to 

 female alba. The former cross tested fully fertile (table 141); four tests fulled with 

 the latter. In all tests elsewhere made (tables 148, 149) these rixon'a humilis 

 hybrids, like the alba-humilis hybrids referred to above, show a very low fertility; 

 or rather they show many germs which fall short of complete development. 



The humil i* risoriu hybrids, particularly the males of the group, seem very 

 much more fertile. This fertility is quite complete with female <ilh<i (table 141); it 

 is practically the same with female humiliN (table 142); it is much less so with 

 female mwm (table 143) and with female Innnilis-risoriii fertility is very low 

 (tables 146, 147). The female humilis-risoria were but partially fertile with a 



TABLE 139. 



Pair 1. 



cT St. riHorin (1); 1900; 11/27/07. 

 9 St.humiUe(3r)(THI C 1); 8/2/00; 6/1/03. 



c? A 1. 8/2/01; dark (fertile); 11/27/07. ,D 1. 6/5/02; broken. 



A 2. 8/4/01; slight development. |D 2. 6/7/02; broken. 



B 1. 4/29/02\ <? E. 7/15 medium dark. . ..8/1/04. 



n o K/i /no }wcak shells; broken. 



Fl. 9/28; killed in nest. 



C 1 1.5/9 dark 5/31 02. F 2. 9/30; no development. (OD 8, A 12) 



O2. 5/11 light 5/31/02. 



Pair S. 



<? St. risoria (2) ; 1900. 

 9~StThumilis (THI-C 2) ; 1900. 



A 1. 8/6/01.... dark; dead (?) before 4/1/02 ?5 mo. tf El. 7/26/02. . .dark 1/7/06 41j mo. 



A 2. 8/8/01.... dark; dead (?) before 4/1/02 ?5 mo. <? E 2. 7/28/02. . .dark 3/5/04 (killed).. .19+ mo. 



9 B 1. 4/22 light 11/26/04 43 mo. V 1. 8/25; not tested. 



IB 2. 4/24; unhatched. F 2. 8/27; not tested. 



C 1. 6/2; no record. 9 G 1. 10/11 light 10/6/05 36 mo. 



C 2. 6/4; no record. D. 7/7; no development. 9 G 2. 10/13; light. (DD 8. A 12) 



TABLE 140. 



d" St. humilis (THI-3) ; dead June 1903. 



9 St. risoria (h. 9) ; 1899. 



cf B 1. 5/31/00.. .darker 7/10/00 li mo. 9M 1. 5/29; hatched; 3 1 I u.-, ; l.V, mo . ( Kfe ,,1. i> 2 ). 



9 B 2. 6/2/00 lighter, fertile. .4/5/06 70 mo. M 2. 5 31 ; probably no development. 



9 C 1. 6/18 lighter, fertile, .alive 1/7/02 22 mo. 9 N. 7/5 hatched 9/03 20 mo. 



rf 1 C 2. 6/20 fertile (pi. 22). .7/4/05 60 J mo. ^ o , g/5 (|ark 2/12/0- .r, mo. 



d*D 1. 7/23 risoria-humilis, infertile; 7/25/06.72 mo. 9 O 2. 8/7; hatched (weakly fertile with I. 2>;'.l 7, 05; 49 mo. 



D 2. 7/25; no development. 



I' 1. 3 25 02; not hatched. 



E 1. 8/5; not hatched. <? P 2. 3 27 02. . .dark '.. I/W 23 mo 



E2 ' 8 / 7 died 10 days old (food?) . ..Jmo. ? Q , , , ,,, ,_,,, \. |; _ 



cfFl.8/30 fertile 5/28/06 57 mo. 9 Q 2. 4/31 hatched . Is/04 "O'mo 



'F 2 ' 9 / 1 dark (fertile).., dive.,, 02 ,...,9mo. ? R , ( . ., ^ , ^ "^ 



G 1. 12/19; no development. <? R 2. r, I hatched ... 14 UK. 



G2. 12/21; no development. ? H] - s ()nrk ^.^ g ^ 0:t 9+ mo 



cT 82. 7/10 .lark all ; . 9+ mo. 



H 1. 1/10/01; no development. 



H 2. 1/12/0!; no development. ' T 1. s | ; , . . . .J-jA. . . . . . . . . ,, , Wl n.. 



I 1. 2/6 hatched (care ?) 4/4/01 2 mo. 



12.2/8 hatched alive 4/7/6i 2 mo. 9 / 7 '-'.. I/M .W mo. 



U 2. 9, .'3 hatched alive 3/25/03 ... 6+ mo. 



J 1. 2/25 hatched 4/8/01 1 .'. rno. 



<? J2 ' 2 / 27 hatched 11/16 / 01 (carc) - VI. 1/9/03 \one, hatched, lived 2 weeks; other 8 ome 



K 1. 3/27; not hatched. V 2. 1 II 03 !' deveh.pm. 



c?K2. 3/29 fertile alive 3 1 /OS . . .47+ mo. W] ., n . ,, o rr , (ircl . 



LI. 4/2S; Home development. \V 2. :i S; no record. 



c? I, 2. 4/30; (weakly fertile with ( > 2) ; killed 3 2* 01: 35 + mo. 



1 The darker and lighter shades were not thus classified during 1902. EDITOR. 

 11 



