PLATE 4. 



FIG. 7. A SHORT-HAIRED, SMOOTH, ALBINO GUINEA-PIG, * 1499. 



Daughter of two albino parents, viz, 9 991, a double heterozygote like $ 1095 (fig. 4, 

 pL 2), and $ 635, a pure short-haired, smooth animal. We know without experimental 

 test that this animal is pure as regards the two recessive characters which it manifests, 

 smooth coat and albinism, but breeding tests are necessary to show whether or not it con- 

 tains recessive the character long coat. This animal has been found to form prepotent 

 smooth gametes. Fanciers' name for all animals of this appearance, White English. 



FI3. 8.-A LONG-HAIRED, SMOOTH, ALBINO GUINEA-PIG, * 1756. 

 Daughter of 3 2060 (fig. 5. pi. 3) and of ? 993, which was a double heterozygote like 

 C? 1095 (fig. 3. pi. 2). This animal, like C? 2060, being a triple recessive, is pure as regards 

 all three coat-characters. Fanciers' name. White Angora. 



