xiii. b, 6 Ruth: The Philippine House Lizard 315 



According to Wiedersheim the calcium gland is an auxiliary 

 to the auditory apparatus. On the one hand, it may be possible 

 that this gland, during pregnancy, becomes more active, thus in- 

 creasing the keenness of the auditory sense rendered necessary 

 at that time for the protection of the parent and her progeny. 

 On the other hand, there is evidence to show that the calcium 

 gland prepares the calcium salt that is carried by the blood 

 stream to the oviduct, where it is deposited as the shell surround- 

 ing the egg substance. 



REFERENCES 



1. B0ULENGER r G. A. Proc. Zool. Soc. London (1883), 121. ' 



2. Stejneger, Leonhard. Proc. U. S. Nat. Mus. (1899), 21, 787. 

 8. Wiedersheim, Gegenbauer. Verg. Anat. (1898), 1, 890. 



