January. 1920] 



The Canadian Field-Naturalist 



means plentiful here, only very few examples having 

 been met with each season, and these for the most 

 part on the roadside. During the present excep- 

 tion"! season (1919), I have only seen it once, 

 on Aug. 7 



The ACADIAN HAIR-STREAK, Strymon acaiUca 

 Edw. Prior to the present year (1919) this was 

 the only hair-streak I had met with at Hatley. I 

 first found it in 1914 on the roadside, about two 

 miles to the south of the village, but only in very 

 limited numbers. From that date onwards I lost 

 sight of it until July of the present year (1919), 

 when I found it again in the same locality, but in 

 rather increased numbers. 



The STRIPED HAIR-STREAK, Str^mort liparopi 

 Bdv. and Lee. This is generally considered a 

 somewhat rare little butterfly wherever it occurs, 

 which remark is certamly true of it at Hatley, for 

 I have never seen it until the present season (1919), 

 and then only m two or three places, along the same 

 roadside that the Acadian Hair-streak frequented. 

 The two species were flying together, from about 

 July 9-14 in about equal limited numbers. 



The WANDERER, Feniseca tarquinius Fabr. This 

 apparently is another rare little butterfly here, for I 

 have only come across two specimens of it so far, 

 one on June 8, 1917, and the other on May 25, 

 1918. Only one species of the genus is known. 

 While it is true that almost all the larvae of 

 lepidcptera subsist upon vegetable food, neverthe- 

 less there are exceptions, one of which is the presen' 

 species, whose slug-like larvae feed upon the woolly 

 aphid of the alder. 



The SPRING AZURE, Lycaenopsis pseudargioluz 

 form marginata Edw. Prior to the spring of 1919, 

 I had only come across the form marginata, of this 

 very polymorphic species, although Gcsse in "The 

 Canadian Naturalist," 1840, p. 123, speaks of it 

 as Pol^ommatus lucia, by which it might be as- 

 sumed he refers to the form lucia Kirby, and was 

 unacquainted with marginata. Both lucia and 

 marginata are winter forms, coming from chrysalids 

 which have lived through the winter and are the 

 first to apoear in early spring. As already in- 

 dicated, I have found marginata to be by far the 

 commonest form, two examples only of lucia 

 having been taken in May of the present year, 1919. 



The BL.ACK SKIPPER (Thymele brizo?) This 

 name was used by Gosse on page 184 of his work. 

 The reference may possibly be referable to the 

 Sleepy Dusky- wing (Thanaos brizo Bdv. and 

 Lee), although the note of interrogation might al- 

 low of its being placed under Thanaos icclus Lint.. 

 (The Dreamy Dusk-wing), which latter I hav. 

 found to be not uncommon here, whereas brizo is 

 out of its habitat. 



The arctic skipper, Carlerocephalus oalaemon 

 Pall. This little skipper, which is totally unlike 

 any other species in the fauna, is described by Gosse 

 in "The Canadian Naturalist," 1840, p. 219, as very 

 rare near Ccmpton. and I had held a similar view 

 regarding it at Hatley. until June 4, 1918, when I 

 first came across it in an open space in the centre 

 of a little swampy wood, about a mile or rather 

 more, to the north of the village. Later on I found 

 it in some marshy ground, adjoining the meadow 

 road to the east of the village, and in several other 

 places as well. It seems strange I should never 

 have come across it before, unless the above year 

 was an exceptional one for the species, which I think 

 it must have been, seeing that I have failed to come 

 across it again during the present season (1919), 

 (which might be described as a "skipper" year), 

 when all the other members of the family have been 

 unusually abundant. 



The long-dash, Politcs mystic Scud. So far I 

 am unable to say very much about this skippei, 

 having only come across it for the first time during 

 the present season (1919). In point of numbers, 

 however, it was nothing to be compared with those 

 of the smaller members of the genus, such as the 

 Yellow-spot and Tawney-edged skippers, besides 

 which its distribution seemed much more restricted. 

 The DUN skipper, Euphyes vestris Bdv. This 

 is another skipper whose presence was undetected 

 until the present year, and looking to the general 

 difficulty of capture, and identification in the field. 

 I think this family probably offers more scope for 

 additions to the Hatley list, than any other. As 

 with the Long-dash, I am unable to say very much 

 about its status, except that its distribution was more 

 restricted, and numbers even less, than those of the 

 former. 



Possibly the remark in my paper on the Orchids 

 of Hatley (Ottawa Naturalist, Vol. XXXII, 

 1919, No. 8, pp. 144-147) that the possibilities of 

 the place had only been touched upon, so far as 

 regards those lovely flowers, may apply equally well 

 here to the butterflies, and that before long others 

 will be found able and willing to extend the fol- 

 lowing list, the nomenclature of which is the same 

 as that used by Barnes and McDunnough in their 

 Check List of the Lepidoptera of Boreal America. 

 List of the butterflies of^ Hatley. 1919. 

 papilionidae. 

 *The Black Swallow-tail. Papilio polyxenes Fabr. 



The Tiger Swallow-tail, Papilio glaucus canadensis 

 R. and J. 



PIERIDAE. 



The Grey-veined White, Picris napi Linn. 

 *The Cabbage Butterfly. Picris rapac Linn. 



The Clouded Sulphur. Eurymus philodicc Godt. 



