REVISION OF THE KING SNAKES. 



123 



possible that its range may actually extend to the west coast of 

 Mexico, but the record here cited is too indefinite to bear any reliance. 

 It may be remarked as bearing upon the unreliability of this record 

 that there is also at the American Museum a specimen of holhroohi 

 (no. R4298) labeled ''West Coast of Mexico, Frank Trubaudt, 

 collector." 



Summary of certain structural characteristics of calligaster. 





Ventral 



Dorsal 







Tail divided hy 







■i- 





plates. 



blotches. 



"3 

 1 





total length. 









" . 



Locality. 







a 





i 



0) 



i 





"c a 





















































s 





















■K 





5 





y^ 



> 



X 



> 





g 



H 



t> 



> 



3 





» 



< 



W 



< 



M 



w 



<! 



w 



< 



:?; 



Texas 



196-209 



205.2 



61-69 



65 



7.08 



9.33 



0.143 

 0.121- .137 



0.128 



49-50 

 38-52 



53 

 45 



Male... 

 Female. 



3 





3 



Kansas 



196-213 



204.0 



57- 78 



68 



7.05 



9.40 



.124- .150 

 .115- .135 



.138 

 .123 



49-57 

 41-48 



52 

 45 



Male... 

 Female. 



12 





9 



St. Louis and vi- 



195-214 



205.2 



46-68 



57 



7.08 



9.23 



.124- .149 



.140 



46-56 



52 



Male... 



15 



cinity. 















.110 .125 



.122 



40-47 



44 



Female. 



9 



Illinois and west- 



201-212 



206.0 



53-69 



60 



7.11 



9.22 



.123 .143 



.136 



44-53 



50 



Male... 



17 



ern Indiana. 















.112- ,145 



.126 



42-46 



45 



Female. 



10 



Whole range 



195-214 



205 



46-78 



62 



7.08 



9.28 



.123- .150 

 .110- .145 



.1.37 

 .123 



44-57 

 38-52 



51 

 45 



Male... 

 Female. 



47 

 31 



Scale formulae of calligaster. 



Locality. 



25-27-25- 

 23-21 



25-23-21 



23-25-2a- 

 21 



23-25-21- 

 19 



23-25-23- 

 21-19 



Total. 



Male. 



Fe- 

 male. 



Male. 



Fe- 

 male. 



Male. 



Fe- 

 male. 



Male. 



Fe- 

 male. 



Male. 



Fe- 

 male. 



Male. 



Fe- 

 male. 



Texas 





2 

 2 

 2 

 1 



1 



1 

 3 



1 



1 

 1 

 1 

 5 



1 

 2 

 3 



1 

 2 



1 



1 



1 

 2 

 1 



...... 



3 



1 

 7 

 7 

 14 



...... 



4 

 3 



4 



12 

 15 

 13 



4 



Kansas 



1 



9 



St. Louis and vicinity .... 



11 



Illinois and Indiana 





1 1 



9 











Total 



1 



7 



6 



8 



7 



5 5 



6 29 



8 



44 



33 



















One male, Jasper County, Missouri, has the formula, 23-21-19-17-19. 

 One male, Umversity, Mississippi, has the formula, 23-21-19. 



Variation and affinities. — The number of specimens and their dis- 

 tribution throughout the area inhabited by this form are entirely 

 inadequate for the demonstration or even detection of geographic 

 variations. The form appears to be very homogeneous throughout 

 its range. It is not unlikely, however, that large series of specimens 

 would reveal geographic tendencies or local differences that may not 

 now be even suspected. 



The accompanying tables of structural characters summarize the 

 situation as well as can be done with the material at hand. 



The table of scale formulae is built upon so little data that it can 

 do no more than suggest the likelihood that specimens from the region 

 186550— 21— Bull. 114 9 



