Fig. I Half-grown specimen ofHemidactylium scutatum, 

 exhibiting in its proportions and coloration some of the 

 characters of P. cinereus and indicating the close relation to 

 and derivation from Plethodon. Actual length, 30.4 mm. 



Fig. 2 Venter of specimen (figure i) showing aberrant coloration. 

 The tendency of the pigment spots to coalesce, as here indicated, 

 would if carried farther entirely obliterate the typical coloration of 

 the under sides and give the uniform appearance found , in P . 

 cinereus. 



Fig. 3 Hemidactylium regenerating the tail. The new stub is 

 at first devoid of pigment but later acquires practically normal 

 coloration. Actual length of specimen, 22 mm. . 



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