76 REPTILES. 



/. Species allied to T. fasciatus. 



17- Tropidonotus fasciatus. 



Scales in twenty-three or twenty-five rows ; upper labials eight, 

 the fourth only touching the eye ; anterior ocular one, posterior 

 three; anal bifid. The distribution of the colours is liable to 

 great variation : ground colour olive-brown, brown or black with 

 two or three series of large blotches. 



Var. A. The Brown "Viper, Catesby, Nat. Hist, of Carol, t. 45. 

 Coluber fasciatus, Linn. Syst. Nat. ed. xii. p. 378 ; Shaw^, Gen. 

 Zool. p. 463. t. 120. Coluber porcatus, Latr. Kept. iv. p. 82; 

 Daud. Rept. vi. p. 204 ; Harlan, Med. Sf Phys. Res. p. 119. Tro- 

 pidonotus fasciatus, Boie, Isis, 1827, p. 535 ; Holbr. N. Amer. 

 Herpet. iv. pi. 25 ; Dekay, New York Fauna, p. 47 ; Dum. ^ Bibr. 

 vii. p. 566. Tropidonotus porcatus, Boie, Isis, 1827, p. 535. 

 Nerodia fasciata, Baird 8f Girard, Catal. p. 39. 



On each side a series of large triangular red-brown blotches. 



a. Adult : head injured. Mexico. From Mr. Warwick's Col- 



lection. 



b. Adult : skin. Central America. 



c. d. Half-grown and young. New Orleans. From Mr. Cuming's 



Collection. 

 e. Young. N. America. Presented by Edward Doubleday, Esq. 

 /, g. Young. North America. From Mr. Cuming's Collection. 

 h. Adult : tail injured : bleached. N. America. Old Collection. 

 i. Adult. N. America. Old Collection. 

 k. Adult. N. America. From Paris. 

 I. Adult. N. America. Presented by the Zoological Society. 



Var. B. Coluber sipedon, Linn. Syst. Nat. ed. xii. p. 379 ; 

 Shaw, Gen. Zool. iii. p. 496; Merr. Tent. p. 124; Storer, Re- 

 ports, p. 228; Lacep. Quadr. Ovip. p. 305; Bonnat. Ophiol. 

 p. 53; Latr. iv. p. 177; Daud. Rept. xii. p. 148. Tropidonotus 

 sipedon, Holbr. N. Amer. Herpet. iv. pi. 26. Nerodia sipedon, 

 N. woodhousii, and N. transversa, Baird 4* Girard, Catal. p. 38 et 

 seq. Tropidonotus fasciatus, var., Dum. ^ Bibr. vii. p. 568. Tro- 

 pidonotus woodhousii and T. transversus, Sitgreave's Report of 

 an Ewped. pi. 14 & 16. 



On the back and on each side a series of large square black 

 blotches ; the blotches of the dorsal series alternating with those 

 on the sides. Sometimes the blotches are obsolete. 



m. Adult. Canada. Presented by J. Cruickshanks, Esq. 



n. Half-grown : bad state. North America. Presented by 



Edward Doubleday, Esq. 

 o. Young. North America. Presented by Dr. Jacob Green. 



