476 THE AMERICAN NATURALIST [Vol. LIII 



the other four (28, 30, 31, 33) were striped but known to 

 be carrying blotched. Lined is therefore dominant to 

 both striped and blotched as previously stated. The re- 

 sults thus far obtained do not demonstrate the allelomor- 

 phism of the three types of banding. In order to do that 

 it would be necessary to cross one of the offspring carry- 

 ing striped (B'B) to blotched cats (bb). All kittens 

 should be lined (B'b) or striped (Bb). If blotched oc- 

 curred it would demonstrate that two loci were involved, 

 LI and Ss. Blotched would then be ll.ss, and the nomen- 

 clature would have to be changed. 



The production of orange and tortoiseshell lined cats is 

 of interest. They are as expected in every way com- 

 parable to other oranges and tortoiseshells except for the 

 narrower bands. 



Eesults in regard to ticking may now be considered. In 

 the previous paper a was used to denote lack of ticking ; 

 A, little-ticked or dark tabby; and A', much-ticked or 

 light tabby. It now appears that there are two hered- 

 itary grades of ticking previously grouped under A' be- 

 tween which there is a fairly wide difference. Compar- 

 ison of kittens at birth or of adult cats makes the distinc- 

 tion clear. During growth intergradations appear for 

 ticking increases with age as in rodents. A' should 

 therefore be divided into A% extreme-ticking, and A"\ 

 much-ticking. Fully as much difference exists between 

 A^ and A"' as between A'" and A. 



A blotched male (11) crossed (14) with a black female 

 (15) sired four blotched kittens, and a blotched female 

 (14) crossed (31) with a lined little-ticked male (18) pro- 

 duced one lined and three blotched offspring. The two 

 blotched cats (11 and 14) were extreniel>'-ticked, A% as 

 were also the eight kittens. A iiiucli-tickcd, J'", Caffer 

 female (19) when crossed (1!») to ihc little-ticked, A, 

 Caffer male (18) produced one iiiueli-tick.Ml (21) and 

 three little-ticked. The much-ticked nu.tlici- .•ind 

 son (21) are very similar and contrast stionuly with tlu' 

 extremely-ticked cats mentioned as well as with littl*'- 



