28 



H. H. NEWMAN. 



as there is in III. plus IV., but the distribution of the fully 

 doubled and incompletely doubled half bands is different. In 

 the case of the left-hand pair I. and II., I. gets both completely 

 doubled halves and II. gets both incompletely doubled halves; 



14 



while in the case of III. and IV. both get a completely and an 

 incompletely doubled half. There is no symmetry reversal in 

 this set. 



Set A. 96, d" (Fig. 15}. 



Fetus I. has band I double except for 5 single scutes on the 

 right margin. 



Fetus II. has a similar anomaly bilaterally. 



Fetuses III. and IV. are very much alike but differ from I. 

 and II. in the extent of the single part of the band, which is much 

 longer than in the other pair. The pairing of fetuses is very 

 clear, but no symmetry reversal is shown. One of four fetuses 

 (II.) is bilateral. 



Set K. 80, cf (Fig. 16). 



Fetuses I. and II. are practically identical. In both band I is 

 doubled, except for four single scutes on the left. 



Fetuses III. and IV. show the incomplete doubling bilaterally 



