1 6 H. H. NEWMAN. 



of band I, confined to the left half of the band and almost 

 identical with the left half of the band pictured in Fig. 3. The 

 band begins on the left lateral margin with six single scutes, is 

 then double for 14-13 scutes and single for the remainder of the 

 series. No other anomalies are exhibited by the mother. 

 Fetuses I., II. and IV. show similar anomalies of band I, but 

 they are unequally bilateral in their expression (like Fig. 3), all 

 three showing more scutes double on the left than on the right. 

 Fetuses I. and II. are strikingly similar in the distribution of 

 single and double scutes and show no reversal of symmetry. 

 Fetus IV. is the most nearly bilaterally symmetrical in the dis- 

 position of its scutes. Fetus III. is unilateral like the mother, 

 but shows a reversal of symmetry in that the doubling is confined 

 to the right side. The symmetry of fetus III. is also a reversal 

 of that of fetuses I., II. and IV., which show a preponderance of 

 doubling on the left side. In addition to the anomalies referred 

 to, fetuses I. and II. show scute anomalies of bands 4 and 5 

 respectively that do not appear to be traceable to the mother 

 and have presumably come from the father. This is one of the 

 rare sets in which it is probable that anomalies came from both 

 sides of the family. The double scutes of I. and II. are in a 

 reversed symmetry to each other, being near the right in fetus I. 

 and near the left in fetus II. 



Set K.JO, 9 (Fig. 10} . 



This set is of importance in that it deals with short rows of 

 double scutes ranging from 2 to 7 elements and serves to empha- 

 size the genetic connection between plate and scute anomalies. 



The mother has in band I in the positions 7 and 8 from the 

 left two adjacent double scutes forming a band anomaly of 

 minimal size but of the same character as the short double 

 regions of the band pictured in Fig. 5. If only one scute had 

 been double-tiered, we would have called it a "scute" anomaly 

 instead of a "band" anomaly. There is also in the mother an 

 independent double scute situated 10 places to the left of the 

 middle of band 2. 



Fetus I. has a double scute in band I in exactly the position 

 of the first of the two double scutes of the mother. This seems 



