524 Wisconsiyi Academy of Sciences^ Arts^ and Letters. 



Table I. 



Skulls united. 



Case II. This is a Bascanium constrictor Linn. [Plate 

 XXXII, Figs. 2 and 2a, Plate XXXIII, Pigs. 2b and 2c], 

 from the collection of the Buffalo Society of Xatiiral Sciences. 

 It was without label but was undoubtedly brought in from the 

 vicinity of Buffalo, where the species is occasionally seen. The 

 point of division of the heads of this snake is close behind the 

 eyes. Plate XXXIII, Figs. 2b and 2c, show the arrangement 

 of the plates on the heads. The angle of the sagittal planes is 

 75°. The two frontal planes coincide. Here also the left head 

 is slightly shorter and broader than the right. 



