1889.] 439 



NOTES ON SOME LEPIBOPTERA CAPTUEED IN NOEWAY. 

 BY R. C. R. JORDAN, M.D. 



Having spent some weeks of the last three summers in Norway, 

 I shall venture on a short account of some of my captures there, 

 premising that no species which was only seen shall be recorded. They 

 are as follows : — 



Pieris brassicce — in June, resembling our spring or first brood. 

 P. napi — occurred to me under two, or it may be almost said, 

 three forms. 



1. Male : alar expanse, 50 mm. ; fore-wing, central spot only faintly visible ; 

 tip of wing, and shading at the base, and along external border, darker than in any 

 of my British specimens ; inferior surface far more dusky, especially along the veins, 

 and the ground colour of the lower wings of a much duller and paler yellow. 



Female : also expands 50 mm. The same differences, compared with our 

 females of the spring brood, exist here as in the male insect ; the spots in the fore- 

 wing are dark and well marked. These large, fine specimens were taken in' June at 

 Christiania. 



2. Smaller in size, and differing from the last only in degree ; the alar expanse 

 being in the largest 45 mm. j they are more dusky than the specimens from Christi- 

 ania, but in other respects similar to them. These were caught chiefly at Tonset. 



3. Bryonia -. taken at Jerkin on the Dovrefjeld. Female : alar expanse, 40 mm. 

 The wing colour on the upper surface is exactly like specimens from the Gremmi 

 and from Zermatt ; on the under surface the general hue, and the veins especially, 

 are more dusky than in any of my Swiss examples, the smallest of which expands 

 48 mm. 



A male, caught with it, is much smaller than any of the males taken in the 

 Swiss Alps under similar circumstances ; a male from the Gremmi, which seems a 

 fair typical example, expands 50 mm., and is quite spotless on the upper surface, but 

 the tip of the fore-wing and the upper half of its posterior border, especially along 

 the veins, is shaded with dusky, as are also the base of the wing and the superior 

 border ; the veins are well-defined, and also dusky. The under surface of the upper 

 wings is white, and has green veins shaded with black, and the traces of two spots 

 are visible, the upper being most plainly marked ; the lower wings are light yellow, 

 with dusky green veins. A male from Jerkin expands only 43 mm., and has the 

 upper surface spotless white, the veins at the superior angle of the fore-wing are 

 just slightly shaded with dusky, and there is the same shading at the base ; the 

 veins are clearly seen. The inferior surface is much as in the Swiss specimens, but 

 the spots on the fore-wing are more faint, and the veins less dusky. The only differ- 

 ence between the Jerkin males, and males of the variety frigida, which I have from 

 the island of Anticosti, is that in these last the spots are invisible on either side, and 

 that the alar expanse of the smallest of three is 50 mm. 



AntJiocharis cardamines — Koppang, &c. 



Gonepteryx rhamni — South Norway. 



Thecla rubi — Koppang, &c. 



Polyommatus Phleeas — taken at Ormeim, Hornsdale, but seen in 

 other places. Another and larger Polyommatus was seen many times. 



