170 Journal New York Entomological Society. tVoi. xxix. 



One specimen near The American Museum of Natural History, 

 October ii. 



I have always considered this species one of our commonest local 

 butterflies and I cannot recall a season, those of the present and pre- 

 ceding years excepted, when it was not plentiful. This being a mi- 

 gratory species, perhaps some catastrophe occurred to the migrating 

 swarms, such as has been recorded for migrations of birds and cer- 

 tain mammals. 



Vanessa virginiensis (Dtury) : One individual taken at Garden City, 

 Long Island, New York, on the morning of November 21 by J. T. 

 Nichols. It was sluggish when found on the top of a dead dry 

 weed. 



Vanessa cardui (Linne) has been with us again this season but was 

 scarce. 



Basilarchia archippus (Cramer) : correction. On p. 343, 1. 6, in 

 '' Miscellaneous Collecting Notes for 1919," D. archippus should 

 read B. archippus. 



Pieris napi virginiensis Edwards. 



Following the Barnes and McDunnough Check List of Lepi- 

 doptera, 191 7, this butterfly is here given as a race of Pieris napi 

 (Linne). I am inclined to think that this may be a distinct species, 

 for among other things, it seems to have but one generation a year, 

 napi oleracea (Harris), the more northern insect, having two. 



The name virginiensis has not heretofore appeared in any of our 

 local lists, specimens recorded as napi (Linne) or oleracea (Harris) 

 are probably of this form. As this is a very rare butterfly in the 

 vicinity of New York City, records from the following specimens, 

 which I have examined, may be of value. 



Good figures of virginiensis are given by W. H. Edwards in his 

 Butterflies of North America," Vol. I, 1871, PI. IX, figs. 5-8. 



One female, in fair condition, Paterson, Passaic County, New 

 Jersey, May 6 (J. A. Grossbeck) ; in the collection of The American 

 Museum of Natural History. This specimen is recorded as "P. ole- 

 racea Bdv." on p. 417, of Report New Jersey State Museum — Insects 

 of New Jersey (1909), 1910, by J. B. Smith. It was probably taken 

 in the vicinity of Garrett Rock (Watchung Mountains). 



