NYMPHALINAE : CIXCLIDIA HAKRISII. 683 



under surface," and particularly those of the median macular band : in 

 one instance the upper surface of the wings was melanized. A pair ex- 

 posed for eighteen days, one five hours, the other eighteen hours after 

 pupation, were altered in a different manner, and the one placed on the 

 ice when eighteen hours old the most, the upper surface becoming here 

 very melanic, the fulvous area occupying only narrow bands ; while both 

 were altered differently from those exposed to the cold a shorter time, and 

 in a manner which is not at all a simple excess of the differences seen 

 before but the reverse ; for though, as before, it is the buff spots of the under 

 surfjice of the hind wings which are affected, these in the present examples 

 were more or less confiuent in the outer half of the wing, showing the 

 precise quality termed suffusion. A third set exposed for twenty-six to 

 twenty-nine days (one at twelve hours old, the others not stated), were 

 altei'ed on both surfaces "by restriction and obliteration of the fulvous on 

 upper side, and the [nearly complete] obliteration of both buff and fulvous 

 on lower side," besides being partially or wholly crippled. 



It will be noticed that these forced differences do not agree with those 

 of an individual naturally matured, described on a preceding page. 



Desiderata. The duration of the e 2:2; stage is unknown. The earliest 

 Stage of the caterpillar has been insufficiently studied. Some observers 

 have spoken of the autumn caterpillars as making no common web ; is 

 there any variation in this respect ? and how does the nest differ from that 

 made by its allies? Those who can follow the caterpillars in the field 

 should carefully watch their actions at the moment of hibernation ; do in- 

 dividuals of the same colony hibernate in common and collect on the same 

 plant in the spring, or do they mingle indiscriminately at that season ? The 

 characteristics of the flight of the butterfly should be described. 



LIST OF ILLUSTRATIONS.-CINCLIDIA HABEISII. 



General. Chrysalis. 



PI. 22, fig. 6. Distrilnition in North America. PI. 84, fig. 17. Side view. 



^„^_ IS. Dorsal view lu outline. 



PI. 64, fig. 41. Colored. Imago. 



67:14. Micropyle. PI. 5, fig. 4. Male, both surfaces. 



K^aierpiuai. 34:7,i*. Male abdomiual appendages. 



PI. 72, fig 1. Caterpillar at birth. 39. 3. Xeuratiou. 



75:13. Abdominal segment of a mature 54.4. Side view of head and appendages 



caterpillar enlarged. enlarged, with details of the structure of 



14. Mature caterpillar. tl^e jgo-g. 



79:20-24. Front view of head, stages i-v. 61:4-^. Papilla of tono-ue. 



82:8. Nest. 



86:54. Dermal appendage at birth. 



.55-57. Same, in stages iii-v. 



