276 TlMEHRI. 
skin is left to shew the nostril, the Crotaline "pit," the 
eye with its large scale over it, and the small scales on the 
top of the flat head. One of the main fangs (the left) is 
broken and shews clearly, in se6lion, the real cavity of the 
tooth, and the poison-channel formed by the fusion of 
the edges of a groove along the tooth. The edges of this 
groove are unfused at two points ; firstly at the top, 
where the poison enters the channel from the poison- 
gland, situated under and behind the eyes ; and secondly 
at the bottom, at some distance from the point, where a 
long and narrow slit allows the poison to be ejefted. 
The reserve-fangs, the first a very large one, are also well 
shewn in position ; the specimen is shewn close to the 
skeleton of the yellow-tail. 
4. A skeleton of a Salempenta (lizard), placed by the 
skeleton of the yellow-tail snake for comparison. The 
stru6lure of the skull, the limbs, and the arches, to which 
the limbs are attached, claim attention. 
-. 
*wtfr#*^ 
