NOTES ON NOVA SCOTIAN ZOOLOGY—PIERS, 267 
coloration from the older, viridescent one, that it was originally 
considered an entirely distinct species under the name miniatus, 
and even at one time was placed in a different subgenus. The 
late Prof. Cope in 1859 expressed the opinion that miniatus 
was only a state of viridescens, but it was not till a number of 
years later that the whole process of transformation from 
immature to mature pigmentation was observed in captive 
animals and fully described. The red specimens are found 
upon land, whereas the viridescent, full-grown form is aquatic 
in habits. 
