52 
GUIDE TO THE 
dimensions. Also a skull of Dermochelys imbricata, 
wkich was foiind washed ashore near Aden, is one 
of a very large specimen. 
The following case, No. II. in the gallery, gives an 
idea of the 
Crocodiles, Monitors, 
and a few other large lizards. The Monitors 
(Varanus) are some of the largest lizards of our 
days. 
Case III. contains the 
Poisonous Snakes 
and more lizards. Among the latter the rather 
primitive Tuatara or Sphenodon from New Zealand, 
which is now almost extinct, calls for special atten- 
tion, as well as the peculiar Frilled Lizard {Chlamy- 
dosaurus kingt) from Australia ; and the only known 
poisonous lizard, the so-called “ Horror ” {Heloderma 
suspectum), from Arizona. 
Case IV. 
displays the harmless Snakes. 
Case V., 
a continuation of the Snakes, is not finally arranged. 
nor IS 
