376 



KANSAS UNIVERSITY SCIENCE BULLETIN. 



When disturbed this snake inflates its lungs, flattens its head, 

 and opens its mouth. It rarely if ever strikes, except when it 

 is l)eing handled. 



Found throughout the state. Specimens have been reported 

 from Mitchell,- Kepublic, Rooks, Barber, Lyon, Shawnee, Doug- 

 las, Franklin, deary, Phillips, Ellsworth, Logan, Montgomery, 

 Harvey, Osborne, Wallace, Pottawatomie and Sumner counties. 



Heterodon nasicus Baird and Girard. 



Spreading Vipor, Texas Rooter, Hog-nosed Snake. 



Heterodon nasicus Baird and Girard, Cat. N. Amer. Eept., Pt. I, Serp., 



1853, p. 61. 

 Ile/crodon simiis nasicus, IT. nasicus nasicus Cope, Check-list N. Amer. 



Batr. Kept., 1875, p. 43. 



Fig. 10. 

 Heterodon nasicus B. and G. 



Dorsal scales in twenty-three rows ; outer row smooth, second 

 row faintly keeled, all of the others strongly keeled. Frontal 

 and parietal wider than long. Rostral broad and high, outline 

 rounded. Azygous plate surrounded by from eight to twenty- 

 five small scales. Two loreals on each side. Superior labials 

 very high. Pregenials much larger than postgenials. Tem- 

 porals 1-2. Orbital plates ten to twelve. Superior labials 

 eight (occ. nine). Inferior labials ten to thirteen. Gastro- 

 steges 150. Urosteges 32. Anal plate divided. 



