LÖNNBERG, MAMMALS FROM ECUADOR AND RELATED FORMS. 15 



no distinct line of clemarcation, so that on the withers the co- 

 lour gradually changes into brown, and then soon into black- 

 ish brown; tail, feet, and lower side of body are almost black. 

 The pelage is very thick and long; on the posterior back the 

 long hairs measure 35 — :40 mm. The tail is thick and bushy, 

 the hair measuring on an average 45 — 50 mm. 



The measurements of the skull are as follows: 



B. M. 5.10.29.3 ef 



Greatest length of skull (including occipital crest) 116 mm 



Occipito-nasal length (without crest) 101 » 



Condylo-incisive length 112 » 



Zygomatic width 71 » 



Least in t er or bit al width 26,3 » 



Width across postorbital processes 35,3 » 



Least postorbital width 23,5 » 



Breadth of the brain-case 46 >> 



Greatest mastoid breadth 52 » 



Length of palate 56,5 >) 



Least width of postmolar bony palate 12,3 » 



Length of upper molar series 22,5 » 



» » » carnassial 10 >> 



Breadth across heal of carnassial 7,5 » 



Träns verse length of m 1 9,5 » 



The skull of this male Tayra from Tucuman resembles 

 the type skull of T. b. brunnea Thomas in having a well cleve- 

 loped sagittal crest which extends far forward. T. b. brunnea 

 has, however, a larger skull with an condylo-incisive length 

 of 118,5 mm. It is also broader between the bullse, minimum 

 in the type 12 mm, against 11 mm in the Tucuman race. The 

 postorbital constriction of the skull is stronger in the type of 

 T. b. brunnea where it measures only 21 mm than in the Tu- 

 cuman form in which it is 23, but this is a rather variable 

 characteristic. The interorbital width is somewhat larger in 

 T. b. tucumana in spite of its smaller size. 



All the body measurements of T. b. tucumana are smaller 

 than those of T. b. brunnea as the following comparison proves. 

 The dimensions of the latter are quoted af ter Thomas, those 

 of the former are the collectors measurements. 



