MosLEY : Persistent Vakiation among Butterflies. 5 



the type (C.S.G.) Sabellica and metra differ from the later broods of 

 the same insects in being smaller and having a greater preponderance 

 of black. But anyone may see the difference of these two common 

 species by capturing a series of each brood for themselves. 



Besides these, napi is subject on the Alps to a dark form of the 

 female having the wing rays clothed with dark scales ; it is called 

 bryoncd, Och., and I have seen British specimens nearly approaching 

 to it ; but in all the British examples I have seen the dark spots on 

 the upper wings show, whereas in the true alpine hryonce the dark 

 spots are obliterated, at least in those specimens which I have seen. 

 The variety napcecB, Esp., is larger than the type, and has no green 

 veins on the underside of the fore wings. Since the introduction of 

 rapce into America, a variety of a bright sulphur yellow has turned up 

 there, and has been named aurea, and specimens having a decided 

 yellow tint have sometimes occurred in this country. Daplidice here 

 is only single-brooded, so we only get one form, but on the Continent 

 they have two seasonal varieties. They have also a form to which 

 they have given the name Bellidice, H.S. (non Bramb.). It may be 

 distinguished by being smaller and very dark in the green on the 

 underside. 



Of the genus Anihocharis we have only one species, and that pretty 

 constant, except with regard to size and the production of herm- 

 aphrodite coloured specimens; some very curious ones are known to 

 me, and are and will be figured in my book on varieties, one having the 

 ground colour yellow, and thus approaching Eupheno, Esp., if, indeed, 

 it be not a reversion to that insect (coll. C. S. Gregson). 



Gonepteryx rhamni has the y Siriet j farinosa, Zett., which is without 

 the orange spot on the fore wing, and has a mealy appearance. Mr. 

 Gregson has specimens from North Lancashire with the orange spot 

 all but imperceptible. 



Then there is Gonepteryx Cleopatra, Linn., which some say is 

 nothing more than a geographical form of rhamni, though generally 

 looked upon as a good species. It differs from rhamni in having 

 orange on the fore wings diffused into a large patch in the male, 

 covering a great portion of their surface. It is found in Spain and 

 the south of France. M, Boisduval is stated (H. & W.) to have 

 reared G. rhamni and G. Cleopatra, from eggs deposited by a female 

 of the former, and there was no difference in the larvae. 



We now come to the two British species of Colias, and in the 

 TTonderful Edusa year of 1877 we had ample opportunity of studying 

 the variations of that species. The greater number of the different 



