THYNG: SQUAMOSAL BONE. 
419 
term ‘prosquamosal’ which has been used by several American stu¬ 
dents, is also a synonym of squamosal and consequently should be 
discarded. 
This research was carried on in the Biological laboratories of 
Tufts college during the year 1904-05 under the direction of Prof. 
J. S. Kingsley, and it gives me pleasure to acknowledge my indebt¬ 
edness and gratitude to him for many valuable suggestions received 
during the work. 
