222 THE BUTTERFLIES OF NEW ENGLAND. 



the appearance in certain places of a late brood of butterflies. This brood 

 is always scanty in numbers (while the June brood is abundant) but 

 whether it is confined to special places or not, whether it is a regularly re- 

 curring or a chance phenomenon is unknown. Watching the behavior of 

 considerable numbers of caterpillars — in this species a tedious undertaking — 

 and perhaps experimenting on them under various favorable and unfavor- 

 able conditions ; and particularly observing the variations in their condi- 

 tion at the approach of winter may perhaps be the best means of attacking 

 the problem. But those who live in southern localities, where, in Mr. 

 Edwards' opinion, the species is double brooded, may perhaps be in the 

 best position to experiment. The northern distribution of the species in 

 New England requires to be determined, and no parasites are known. 



LI8T OF ILLUSTBATI0NS.-CIS8IA EURYTUS. 



General. Chrysalis. 



PI. 18, fig. 8. Distribution iu North America. PI. 83, fig. 28. Side view. 

 Egg. Imago. 



PI. 64, fig. 5. Plain. PI. 1, fig. 8. Male, both surfaces. 

 11. Part of surface greatly enlarged. 11:6 Both surfaces. 



Caterpillar. 33 : 6, 7. Male abdominal appendages. 



PI. 70, fig. 4. Caterpillar at birth. 38 : 3. Neuration. 



74:3,6,10. Full grown caterpillar. 46:4. Androconium. 



13. Penultimate stage of caterpillar. 52:3. Side view of head and appendages 



14. Full grown caterpillar enlarged. enlarged, with details of leg structure. 

 78 : 25-29. Front view of head in stages i-v. 61: 3. Neuration, front wing of male. 

 86: 40. Dermal appendage of caterpillar, 4. The same of female. 



first stage. 11. Front view of head, denuded. 



42. The same, second stage. 27. Papilla of tongue. 



SUBFAMILY NYMPHALINAE. 



Nymphalinae Bates; Nymphales Fabr. ; Nym- tehua + Elymniina + Biiua Herr.-Sch.; 



phalides + Peridromides + Biblides Boisd. ; Nymphalinae + Elymniinae Kirb. 



Nymphalites+Argynnites+Peridromites + Najades + Dryades + Hamadryades Borkh. ; 



Biblites Blanch.-Brull6; Nymphalidae + Najades Scudd. 



Peridromidae Doubl.; Nymphalides Herr.- Consules (pars) +Nobiles Herbst. 



Sch. ; Nymphalidae + Ageronidae + Euryte- Spinigeri Newm. 

 lidae Doubl.-Westw. ; Nymphalina + Eury- 



Their wings with azure, green, and purple glossed. 

 Studded with coloured eyes, with gems embossed. 

 Inlaid with pearl, and marked with various stains 

 Of lively crimson through their dusky veins. 



Mrs. Barbauld. 

 Champfitres divinit6s 

 Faunes, Dryades, sortez 

 De vos paisibles retraites. 



Moliere. 



Imago. Butterflies usually of medium or large size. Head quite variable in size. 

 Front generally moderately tumid, more or less protuberant beneath. Antennae in- 

 serted in distinct pits, between which the union of front and vertex is almost always 

 lower than the neighboring parts ; consisting of from thirty to fifty joints, moderately 

 slender, straight, scaled, considerably longer than, sometimes nearly twice as long as, 



