OF WASHINGTON. 447 



" beach hammock " is still mostly intact, and in this collecting may 

 still be be done. 



In the present remarks the west, or landward side of Lake 

 Worth, will not be considered. There entirely different faunistic 

 conditions prevail. 



During the period between 1890 and 1900 the climate of Lake 

 Worth, has perceptibly changed. Formerly cold weather was 

 unknown, but within the last four years frequent cold spells have 

 occurred. Perhaps, on this account, butterfly life was much less 

 abundant as a whole than it was ten years previously. 



The plants herein referred to were kindly named for me by Mr. 

 F. Kinzel, a resident botanist. I am also indebted to Mrs. A. T. 

 Slosson, who has spent several winters at Palm Beach, for a list 

 of her captures. 



PAPILIONJD^E. 



Papilio polyxcnes Fab. Several examples in February, 1900. 

 The food fland at Lake Worth is the Discopleura. 



Papilio palamedes Dru. One seen in the beach hammock in 

 February, 1900. Possibly a visitor from the west side of the 

 lake. 



Papilio cresphontes Cram. Seen late in February, 1900. Said 

 to be common in summer ; the larva on orange. The native food 

 plant, however, is Xanthoxylon pterota, as I found an egg on 

 that plant. 



NYMPHALID^E. 



Danaisplexippus L. A few worn examples were seen in 1900. 

 No larvae met with. Apparently the species does not feed on any 

 of the Asclepiadaceae native to the region. 



Danais berenice Cr. Abundant in 1890, but rare in 1900. 

 The larvae were seen in the former year on a delicate vine. ( Vin- 

 cetoxicum palustre.) 



Heliconia charitonia Linn. Abundant in 1890, and not per 

 ceptibly diminished in 1900. The curious white, black-spined 

 larvae, were occasionally seen on the Passiflora pallida. 



Agraulis vanillce Linn. Fairly common, about the same in 

 both years. The dark red larvae were occasionally seen on the 

 same plant as the preceding. 



Colcenis julia Fab. A few examples seen on the wing. Mrs. 

 Slosson has also captured it, but it is rare. 



Phyciodes phaon Edw. Several specimens in both years, fly 

 ing in grassy spots. The butterflies were of the so-called " winter 

 form." 



Pyrameis atalanta L. The commonest butterfly in 1900; not 

 seen, that I recollect, in 1890. The food plants are Parietaria 



