474 



THE AMERICAN NATURALIST 



[Vol. LlII 



had an extreme amount of, white-spotting. The same 

 male (24), when crossed (51) to his "anomalous" (Yy) 

 cream mother, (23) (b.m.w.Yy), sired two cream females 

 (b.m.w.Y). He was also crossed (53) to a black female, 

 (32) (a.B.M), and sired one maltese male, (a.B.m.w.y) 

 and four tortoiseshell females, (one a.B.M, one b.m, and 

 twoa.M). 



The progeny from the "anomalous" (Yy) cream female 

 (23) by her cream son (24) now consists of four litters 

 (41, 46, 50, and 51) containing two maltese males (yX 

 — ), one cream male (YX — ) and four cream females 

 (YX ?X). 



There are now in all eight matings of "yellow" male 

 (YX — ) by "black" female (yX yX) giving sixteen 

 "black" males (vX — ) and seventeen "tortoiseshell" 

 females (YX yX)*. 



Dr. Charles Penrose, of Philadelphia, very kindly 

 loaned his Caffer cat for crossing, a much-ticked lined 

 male (21) (A'.B'.M.y) mentioned in the previous paper. 

 A cross (52) made with an orange striped female (31) 

 (B.M.Y), from mating 37 produced three tortoiseshell 

 females,— a much-ticked lined (A'.B'.M.Yy), a lined with 

 ticking present but with so much yellow that the exact 

 d<'grre was uncertain, (B'.M.Yy), a ticked of uncertain 

 degree in which the ])aii(linu- wns also imccrtaiii on ac- 

 count of admixture of black and xcllow, (^^.^'>'). 



The same male (21), (•r(.-^>c(l (:>7)) ic aii oraii-v striped 

 sister (33) fB.M.Y) of I'cinalc :n. >iivd five orange lined 

 males (B'.M.Y). 



The same male (21) crossed (54) to a tortoiseshell (28) 

 (a.P>.:^r.Yy> sired four lined n<)n-v(>]l(>NV kittens,- two 

 hill. -ticked mn\r< (A.lV.M.x), and two much-ticked 

 remains ( A'.ir.M.v ). 



Til., ^anir male (21 . .Td^^. d i."..;, in .-, hlntcli...! maltese 

 t(.i-t..i-.-ii.'l! (l;:) ( .\.l).iiiA'\ ) >lr('<l four lined orange 

 ma!.- (['>'. MA ) and two lined tortoiseshell females 

 (B'.M.V> ). 



When he ua^ crossed (57) to a dilute tortoiseshell (34) 



