34 ENTOMOLOGICAL NEWS. [Jan., 'lO 



species in San Francisco. It is usually common in Marin 

 county, flying over the chaparral slopes of Mt. Tamalpais. 

 Edwards has written an interesting article on this insect, de- 

 scribing its life history and remarking on its periodical abun- 

 dance. (See Proc. Cal. Acad. Sciences, Vol. V, p. 123, 1875.) 



ir. Pyrameis atalanta Linn. 



Cannot be said to be a rarity here. 



12. Pyrameis huntera Fabr. 



Strictly resident here and not uncommon. Larva on Gnap- 

 haliiiin, which flourishes in sandy localities of sufficient 

 moisture. 



13. Pyrameis cardni Linn. 



This rapid flyer is quite common in certain locations, as 

 Lone Mountain, where the larva feeds principally on Cirsinin 

 occidentalc, but may also be found on Lnpimis arbor ens, Mal- 

 vaceae and Urticac. Since its preferred food-plant is com- 

 monly found on the outskirts of the city proper, the butterfly 

 is not usually taken in populous districts like the following 

 species. 



14. Pyrameis caryae Hbn. 



The most common of the genus, and before the advent of 

 Pieris rapac, perhaps the most characteristic butterfly of San 

 Francisco. It is very commonly seen in gardens and public 

 squares of the city, and is very fond of the blossoms of Helio- 

 trope. It can be taken probably throughout the year, but, of 

 course, most abundantly during the summer and fall. The 

 larva, which varies in color, feeds on nettle and various plants 

 of 'the Malvaceae, especially Malva borealis, which is of com- 

 mon occurrence in uncultivated districts, and a noxious weed 

 in public squares. 



The aberration muelleri described by Letcher is a seasonal 

 form of striking aspect. As far as I am aware, this form in- 

 variably makes its appearance in late fall, when the cold 

 weather is setting in, and which in a measure is probably re- 

 sponsible for the aberration. It is quite a rarity here, as it is 



