SOS 



DOUBTFUL SNAKE. 

 Cobra Americana. Seb. 2. t. 21./. 3. 



Length about fifteen inches, and moderately 

 thick in proportion : head rather large, and co- 

 vered with small scales, neck thick : colour white, 

 with extremely broad numerous transverse red 

 bars, many of which are bifid on the sides ; tail 

 rather taper but not sharp-pointed, and marked 

 above by a deep red undulating stripe of alter- 

 nately confluent marks in some degree similar to 

 those on the viper, to which tribe this species 

 seems to belong : the head is white above, with 

 two small oblong red marks in the middle : abdo- 

 men pale red : described merely from Seba's figure. 

 Notwithstanding the viperine character mentioned 

 in Seba's very slight description, the engraving 

 has something of the appearance of an Atiguis, 

 and must be considered as doubtful. 



AGILE SNAKE. 



Coluber Agilis. C. fasciis alternis albis fuscis, capite pano^ 

 Cauda brevi. 



Snake with alternate -wbite and brown bands, small head, and 

 short tail. 



Coluber agilis. Lin. Si/st. Nat. p. 381. Mus. Ad., F/id.p. 27. 

 f. 21./. 2. 



Abdominal scuta 184, subcaudal scales 50. 



Described by Linn^us in the Museum Adol- 

 phi Friderici, Head small, and covered with large 



