FROM TEXAS AND MEXICO. 125 



in the rattle there are nine nearly equal rings, some having 

 been lost. From this it is evident the snake was full grown 

 and belonged to a small species. 



This form is closely allied to C. tigris Kenn., in which it 

 is placed as a variety,. ^ 



SlBON SEPTENTRIONALE ifemfc^.^WSk 



San Luis Potosi, Mexico. 



Dorsal rows twenty-five ; ventrals two hundred and 

 seven ; anal bifid ; subcuudals seventy-two pairs ; white 



transverse bauds twenty-six on body, ten on tail : total 



. . . 



length nine and seven-eighths inches ; tail two, 



< 

 KEGINA MESOMELANA Jaw, 1863. fr 



ana \ajooma ( fffima 



San Luis Potosi, Mexic^ g , a lB.Jicho9;tnB ovrt ; vllmo 

 The dorsal rows ar,e nineteen in each case ; ventrals 

 one hundred and forty-nine, one hundred and fifty-five, one 

 hundred and fifty-nine ; subcaudals, in the only one entire, 

 sixty-two pairs. On one the lower anteorbital is fused with 

 the loreal on both sides of the head. One has the outer 

 two and a half rows of lighter color ; others have a light 

 line on the second and third rows and below it a brown 

 one on the first. The median .jine.pf olive brown on the 

 belly varies greatly ,i%a(j6wiiiq ^ijbjdj Q 



_, jo LiJaxi rip /job 10 etoqa ,89iiil on Q-L 



BOTHNIA PROXIMA Say; B. & G. 



'I ,dOJ59 89JJJ08 TO 9KJIJOO IO f 8JOq8 A'IKD IO 891198 , 



Georgetown, Texas. 



Dorsal rows nineteen ; veutraJs one hundred and seventy- 

 one ; subcaudals one hundred and five pairs ; total length 

 nine and seven-eighths inches,, (jflfeftlgn^ ^ ^ jo( 



/y 9'wj 9 r i9ili afiis 9i|J jU) J yi4Li9Y/of 9fli ^nofA 



EUT^NIA MARCIANA B. & Or., 1853. 



>dT .9liT ni Juil rifcbb9 

 San Luis Potosi, Mexicq r7 , o , (J djhf Lyljt(nn - IO j 



Dorsal rows twenty-one ; ventrals one hundred and fifty- 



