Dunn — Tfic Variations of a Brood of Wntersnakes. 63 



Loreals or Prefrontals. — Where two Inreals were present the prefrontal 

 was divided at the canthus rostralis. Mother, 2-2. 



Preoculars. — Where two were present the lower quarter of the normal 

 plate was divided off. Mother, 1-1. 



Young: Formula. No. of Spec. Percent. 

 1-1 18 56.5 



]-2 5 15.5 



2-2 9 28 



Second Row of Temporals. — Mother, 3-3. 



Young: Formula. No. of Spec. Percent. 



4-3 2 6.2 



3-3 25 77.5 



3-2 3 9.3 



2-2 2 6.2 



Unbroken Color Bands. — These were the number of unbroken saddles 

 around the body, which in this subspecies break up into three series of 

 alternating spots on the posterior part of the body. The mother had 

 eleven bands. The young ranged from 17-6. Mean 11.5. Average 10.5. 



No. of bands: 17 16 15 14 12 11 10 9 8 7 6 

 No. of young: 1 1 2 1 2 8 6 5 5 11 



Sub-caudal Plates. — The mother had 67 pairs. The young ranged from 

 61 to 80 pairs. Mean, 70.5; average, 66.5. 



Probably Females. 



Sub-caudals 61 63 64 65 66 

 No. of young 14 3 4 3 



Ventral Plates. — The mother had 134. The range of the young was 

 from 130-140. Mean, 135; average, 136.5. 



Ventrals 130 131 132 133 134 135 136 137 138 139 140 



No. of Young 10123445372 



The first ventral was taken as the first undivided plate under the throat. 

 I do not believe that a variation of more than 2 at the outside was thus 

 admitted, whereas any other method would have been open to uncertainty, 

 especially as the ventrals are the same color as the throat, and are un- 

 spotted till about the 25th, 



Position of the Navel. — A point of interest in the consideration of the 

 variation of the ventral series is the position of the navel. This ranges 

 from the 116th to the 128th ventral. The distance between the navel 



