ON TEXAN REPTILES. 101 



SAURTA. 



Phkynosoma cornutum Hail. ; Gray. 

 LvGOSOMA LATERALE Say ; D. & B. 



The specimen has thirty scales in a row around the body, 

 a smaller scale at each side of the pair of large preanals, 

 and a pair of narrow lines of brown from the nape to the 

 base of the tail along the middle of the back. 



OphiSxVurus ventralis Linn. ; Daud. 



One hundred and twenty-seven scales from chin to vent. 

 Eleven labials. 



OPHIDIA. 



Sistrurus catenatus Raf. ; Garm. 



One specimen had dorsal rows 25, ventral scutes 157, 

 subcaudal scutes 25, labials 12, infralabials 13, and dorsal 

 blotches 41, on the body, plus 7 on the tail. Another had 

 rows 25, ventrals 155, subcaudals 3 pairs plus 31 entires, 

 labials 13-14, infralabials 12-13, and dorsal blotches 43 

 on the body and 8 on the tail. 



Sistrurus miliarius Linn. ; Garm. 



Rows 21, scutes 134, subcaudals 25 entire plus 6 pairs, 

 labials 8-9, infralabials 9, anteorbitals 3, postorbitals 5. 

 The red band on the back is very distinct. 



Ancistrodon piscivorus LaC. ; Cope. 



Five specimens. Rows 25, scutes 135-137, subcaudals 

 39-44, labials 7-8, infralabials 10-11. The number of 

 bifid subcaudals under the end of the tail varies from 

 six to twenty, among them there are occasional entire 

 scutes. A half scute frequently occurs immediately in 

 front of the left half of the anal. 



Comparison of these with specimens from the eastern 

 section of the range discovers no grounds for separation as 



