130 



CELUTA. 



The specimen figured by Schlegel, and which he had from Ten- 

 nessee, exhibits only one pair of frontal plates, whilst the numerous 

 specimens from the eastern part of the United States, examined by 

 us, are all provided with two such pairs. Of two specimens from 

 Missssippi, one corresponds exactly with the figure given by Schlegel, 

 whilst the other has three frontal plates, a posterior pair, and the 

 right plate of the anterior pair. This circumstance has warned us 

 against distinguishing, for the present, a western species from an 

 eastern. Schlegel had ten individuals in his possession, but we are 

 not told whether they all agreed together, as no importance is given 

 by that author to the presence of one pair of frontals only. Should 

 all the western specimens agree in the deficiency of the prefrontals, 

 this would undoubtedly become a character of some importance. 



