128 I'lIE AMKRICAX XATUBALIST [Vol. LIII 



nothing but pink-eyed non-extended non-yellow offspring. 

 Thus : 



1202.1 X $1118.1 



ppCrCree ppCrCaee 



pC < 

 pCae 



J he iiijiliiiu' Ims been made and thus tar there have been 

 _'4 olfsitniiu-, all ol them pmk-eved non-e.xtended non- 

 xcllows (s(M' !■ lu'. 4). Some of these offspring are bemg 

 tested h\ Ix'iiiu- mated to albinos, but as vet their compo- 

 sition with rcs)iect to the presence ot albinism is not 

 ch'hiiitt'h- know n. It mav be of interest to mention that 

 on ( I 1h in wh 11 111 it(d to I PPFL albino h id out dark 

 (\ 1 // // / lUpiin<, Jlu othei two oft^^pung in 

 the same httcr were black-and-white, due to the fact that 

 neither parent was lioniozvgous tor entire pigmentation 



DiscrssroN 



narilv understood h\- hivcdcrs. is ;i compl.-lelv s(-lt wliite 

 animal witli pink exes. Aihiiio rahlnts aiv di tins t\pe. 

 In ulditi. 11 111 1 1^ th Mm .1 V 111 N 111 u whidi iKo 

 h I- 1 ml X - 1 nt t„ ( ,1 ,,, 1 ,.! II iiu ntiuh \Nliite 

 is ])mnient('(l at the aiiiinai s cxt remit ics. Miis condi- 

 tion 1- d< mm ml 1 ill ii ih i m 1 i ( -im to the fulh 

 piii'meiited coiidit 1(111, thus torminu' ])ai't ot an allelo- 

 morphie series ( Stii rtex ant. i'.M.i). (iumea-pig fanciers 

 aK > h !\ uh It 111 \ ( ill 1 llim .1 IX m ^ nut\ Uik 

 how X 1 Ih . n ti( 1 ] itu n-hip ditf tioni th it lonnd 

 m 1 il)l It- Ilim il IX in ^um i u im loiibt( dix tine 



dhiims , iMMiu th( t utoi t .1 blid (/ ) m 1 tin (xtdi 



