Vol. VIII] VAN DENBURGH AND SLEVIN— GARTER-SNAKES 



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Figure 5 



Figure 5 represents the greatest number of scale-rows. 

 It shows that all of the subspecies except T. o. ordinoides 

 and T. o. atratus agree in having normally 21 rows of 

 scales. It indicates the right of T. o. atratus to recognition 

 as a subspecies distinct from T. o. ordinoides on the one hand 

 and from all of the other subspecies on the other. The per- 

 centages shown for the various subspecies are : — 



T. 0. ordinoides 76, 24. 



T. 0. atratus 79, 21. 



T. 0. elegans (Sierra Nevada) 13, 87. 



T. 0. elegans (San Bernardino Mts.) 5, 95. 



T. 0. vagrans 2, 98. 



T. 0. hiscutatiis 1, 95, 4. 



T. 0. hammondii 1, 99. 



T. 0. couchii 5, 90, 5. 



