826 



THE AMERICAN NA T UR ALIST [Vol. XLVII 



the skin drawn on the outline in free hand. 4 The major- 

 ity of the sketches were made from animals which had 

 been preserved in formalin, sometimes in poor condition 

 when put into the formalin. A few of the dead animals 

 were lost by being thrown out by the attendant while 

 cleaning. 



The Material. — Our original tricolors were purchased 

 from a dealer. It is important to note that in these ani- 

 mals the color that we designate as red is a red and not 

 a yellow. Animals that are spotted black, white and yel- 

 low also occur. The self-colored red and black animals 

 were from the pedigreed stock of Mr. B. B. Horton, to 

 whom we are under many obligations for the opportu- 

 nity to carry on this work at "Oakwood." The tricolors 

 are known to fanciers as tortoise and white. 



In the figures solid black represent black; stippled 

 areas represent yellow ; white crosses on black represent 

 yellow hairs; and black crosses represent black hairs. 

 Small circles indicate agouti areas. 



Breeding Records 



The breeding began with 401$ (short-haired) and 

 402c? (long-haired with rosettes). No. 401 we classify 

 as tricolor black (see diagram). 5 She is the original fe- 

 male from which all the stock has descended. No. 402 

 also is tricolor (see diagram), but the black and red areas 

 are nearly evenly balanced. 6 



The offspring from this pair are numbered from 403 

 to 414, inclusive; five, 405, 406, 407 (balanced), 408, 412, 



4 The presence of a few scattered white hairs on the toes has been disre- 

 garded in classifying the animal as well as preparing the sketches. Ear 

 color also has not been considered except for bicolor black, and then only 

 when a patch of red was present here but not elsewhere on the body. 



•After the pedigree chart was made the individual figures of the guinea- 

 black is tricolor red) was changed; the designation in the text is to be 

 preferred to that in the table in case of disagreement. 



