148 THE CANADIAN ENTOMOLOGIST. 



" Heteropterus mandan, Edw. — Much resembles H. paniscus, Fab. ; 

 common in 1883, but not observed before/' 



A specimen of Man dan was in 1872 determined by Mr. H. K. Mor- 

 rison as Paniscus (Palcemon). In an account of lepidoptera collected on 

 Anticosti, Mr. William Couper writes: — " Hesperia paniscus, Fabr. — A 

 single specimen captured at Fox Bay, Anticosti, on the 26th June. It 

 was sent to Mr. Morrison, who informs me that it does not differ in the 

 slightest from the European specimens of paniscus. It is close to Man- 

 dan, Edw." — (Can, Ent., Nov., 1872.) At that time Mandan was ex- 

 cessively rare in collections. 



Carterocephalus palcemon of the Bow Valley is larger than the same 

 species in Europe and eastern North America, and is more variable in 

 size, ranging from expanse of the Finland and Switzerland instances to a 

 size noticeably exceeding that of the German examples. It displays 

 greater individual variation also as to size and colour of the fulvous spots 

 above forevving. At Laggan it chiefly frequents grassy meadows along 

 the Bow at an altitude of 4,800 to 5,000 feet, the $ in ordinary seasons 

 appearing early in June and the ? during last half of the month. Several 

 9 s have been taken at Emerald Lake in early July, and 1 5 at Agnes 

 Lake early in August. It occurs also at Stephen, B. C, six miles west 

 of Laggan. 



This is one of those species which come from pupa earlier or later ac- 

 cording to the forwardness or tardiness of the season ; it is by no means 

 so prompt to a date as are some of the local butterflies. There is no in- 

 dication of more than one flight in a season. 



ADDITIONAL NOTE ON THE LARVA OF PALCEMON. 



After sending away the foregoing, a very interesting article was me, 

 with in The Entomologist (London, England), Oct. and Nov., 1892, 

 which tends to confirm my views already stated : — " Life History of 

 Carterocephalus Pa/cemon,by F. W. Frohawk, F E.S." So far as I cm judge- 

 Mr. Frohawk's account of the larva of Palcemon agrees substantially with the 

 description of the larva of Mandan published by Mr. James Fletcher in 

 Canadian Entomologist, June, 1889. My main object in the present 

 reference is to mention that Palcemon, as well as Mandan, eats grasses. 

 Mr. Frohawk reared his larvae with success on Bromus asper. 



My own incomplete notes of the local larva, from observations made 

 in June, 1889, agree entirely with Mr. Frohawk's account. An interesting ( 

 fact in my experiment was that several of the eggs were laid by lamp 



