— 414 — 



portions, or large or small spécimens froni oliiers of mean 

 dimensions, or, by which certain colour variations may 

 be distinguished, when, as is coramonly the case, the 

 variations in question may be met with among individuels 

 living side by side. On the other hand, while the burden- 

 ment of zoological literature with such varietal nanies as 

 major, minor, elongata, urticolor, etc., is to be deprecated, 

 much is to be gained by distinguishing marked local 

 forms by means of varietal or sub-specific names, since 

 such difïerentiation is of distinct service to the student of 

 variation and distribution. 



Group of G. pardalina. 



Appears to be represented by but one species which is 

 everywhere tremendously variable. The characters of 

 ('. Uictescens, Souv. are probably the resuit of environment. 



Group of G. turturina. 



It is exceedingly doubtful whether this group, to 

 which by the way, Dali (1) has given the name Euplica, 

 contains more than the single species described by Lamarck. 

 C. turturina is a variable form, and a large séries from 

 various localities shows every gradation between it and 

 C. Deshayesi, Grosse ; while some examples approximate 

 very closely to C. varians, Sby. and even to C. versicolor, 

 Sby. Since I hâve collected but very few living examples 

 of C. turturina, I am unable to afiirm that the variations 

 are, as I strongly suspect, associated with diflerence of 

 environment. 



Group of G. versicolor. 

 C. versicolor, Sby. This species varies greatly according 



(1) Bull. Mus. Harvard, vol. XVIII, p. 187. 



