PAPILIOXIDAE : RHODOCERIDI. 1839 



Notwithstanding its abundance, very little is known of its history or 

 seasons, beyond what Boisduval and LeConte stated fifty years ago, and 

 its early stages have only very recently been fully described by Edwards. 

 According to Boisduval and LeConte, it appears first on the wing in May, 

 reappears again for the entire summer and a part of the autumn, flies in 

 clover fields, but is found in the pine woods of the south, and feeds in the 

 caterpillar state on different kinds of Glycine and Trif'olium, as well as, 

 according to Abbot, Dysodia chrysanthemoides, one of the Compositae. 



Abbot, who called this the clouded yellow butterfly, says it "continues 

 to breed all the summer and autumn, is most common in tlie pine woods, 

 and often settles, several together, to suck tlie moist places in roads and 

 other places." He bred the butterfly May 2, after thirteen days in the 

 chrysalis. 



Edwards states that the eggs and young larvae were received by him 

 from western Missouri August 2, caterpillars of all stages August H, eggs 

 and young caterpillars again on August 26 and October 8. Mr. Edwards 

 found the duration of the egg in West Virginia about four days ; of the 

 successive larval stages from three to five days, the last a day longer, and 

 the chrysalis from seven to ten days. The food plant in Missouri is stated 

 by him to be Amorpha fruticosa, and in California, A. californica. 



According to Rowley, the butterflies are found during every month from 

 April to November, and show a seasonal dimorphism in the presence or 

 absence of a rosy pink suffusion on the under surface in special areas. He 

 writes thus to J\lr. Edwards : — 



"The females with red under the wings do not occur at all in the early 

 summer broods. I took scores of butterflies this season in late April, all 

 thi'ough ^lay, June and July, and discovered not a streak on one of them. 

 The first examples with red were taken in August. In Septemlier tliey 

 were more numerous, while nearly every female of late October and 

 November were either heavily streaked or solidly red below. I have yet 

 to see a red under wing of earlier date than August. The feature is surely 

 a seasonal one." (Can. ent., xx : 24.) 



PYRISITIA BUTLER. 



Pyrisitia Butl., Cist, eut., i;35, il (1870). Terias pars Auctorum. 



Imago. Head moderate, compact; front quadrate, protuberant below, but traus- 

 versely flat; a mesial, transverse pit behind the antennae; vertex iu no way tumid, but 

 full posteriorly. Eyes tolerably large and full, naked. Antennae inserted in moder- 

 ately deep pits, separated by the diameter of the basal joint, .slender, fully as long as 

 the abdomen, composed of twenty-nine or thirty joints, of which about nine form the 

 slender, cylindrical, elongated, gradually incrassated club, which increases very grad- 

 ually in size up to the antepenultimate joint, and then rapidly tapers to a bluntly 

 rounded apex; the largest joint is about twice as broad as long, or as the stalk, the 

 longer joints of the stalk about three times as long as broad. Palpi small, the clothing 



