tact with the supratemporal, and probably with the paroccipital. The 

 articulation of the quadrat? irith th> txurcipitol i.< universal in th? I<j. 

 uanidce. I will, however, here call Dr. Baur's attention to the fact 

 d that the quadrate of the 



touch the supratemporal 

 that the quadrate in the Lacertilia articulate with the exoccipital, and 

 does not do so in the Ophidia. I will notice later some exceptions to 

 the rule, of which I have since obtained information. The articula- 

 tion with the supratemporal (prosquamosal, Baur) is naturally not to 

 be mentioned in a diagnosis of the order Lacertilia, as there are nu- 

 merous genera of that suborder in which that element is wantuag.—E. 

 D. Cope. 



Boulanger on the Difference between Lacertilia and 

 Ophidia ; and on the Apoda.— In a recent note, 7 Dr. Boulenger 

 criticizes my definitions of the above suborders and the Pythonomorpha 

 as published in a late number of this journal. 8 He objects to the 

 definition which I gave the Lacertilia, viz. : that the quadrate bone 

 articulates with the exoccipital ; and to that of the Ophidia, which as- 

 serts that this articulation does not take place. He suggests that I 

 must have examined very few types of Lacertilia or I would not have 

 made such a statement, and he mentions two or three other elements 

 with which the quadrate bone also articulates. Now I must call Dr. 

 Boulanger's attention to the fact that I nowhere state that the quad- 

 rate does not touch the other elements he has referred to, but have, on 

 the contrary, stated that they do so touch. The doctor has apparently 

 not read my article carefully, or has injected into his reading some- 



7 Annals and Magaz., Nat. History, XVI, 1895, p. 367- 



