60 REPTILES AND BIRDS. 
mucus is not poured out till it is required to lubricate the dilatec. 
jaws and throat for the seemingly disproportionate feat.” | 
Fig. 16.—Anaconda. 
[The small, but very distinct family of Zrycide have the body 
of moderate length, cylindrical, covered with small and _ short 
scales; the tail very short, with only a single series of subcaudal 
scales; head somewhat elongate ; eye rather small, with vertical 
