IGGG THE BUTTERFLIES OF NEW ENGLAND. 



it occurs in various parts of Mexico, as at Putta and also at Saltillo and 

 San Luis (Palmer). To the north it has Ijcen found from Colorado (Mead, 

 Reakirt), Fort Niobrara, Neb. (Carpenter), northern Illinois (Worthing- 

 ton), Cleveland, Ohio, common (Kirkpatrick), to the Catskills, N. Y. 

 (Edwards), which is the nearest point to New England at which it has 

 been taken. This was many years ago, and it has not been noticed since. 



Food and habits of caterpillar. Dr. Wittfeld says that the larva 

 feeds on Ik-rmuda grass, Cynodon dactylon Pers., and fastens together a 

 number of blades, spinning in the cylindrical cavity thus formed a silken 

 web and living within the retreat, coming out only to feed. It grew to 

 maturity in southern Florida in twenty-seven days, passing the first 

 moult in five days after birth, the second, third and fourth in four, three 

 and five davs, and remaining in the final stage eight or nine days. 



Life history. The data concerning its apparition, which are very few, 

 merely indicate that it is triple brooded, the generations appearing in April, 

 July and September. The eggs hatch in from three and a half to four days 

 in southern Florida (Wittfeld), or four days in West Virginia (Edwards), 

 and all the preparatory stages are passed, according to Dr. Wittfeld, in 

 forty-one days, the chrysalis continuing ten days in August. 



Desiderata. Althougli little remains to be done upon the structural 

 features of this insect, our knowledge of its habits, whether in the cater- 

 pillar or imago state, is nearly a blank ; the life history is vei-y vaguely indi- 

 cated above, and its relation to the allied A. campestris of tiie Pacific coast 

 is yet to be made out carefully. A more perfect knowledge of its western 

 distribution would be the first thing to be gained. 



LIS T OF ILL f/A' TEA TIONfi.-A TAL OPEDEfi HUH ON. 



ireneraT. dirysalin. 



PI. 31, fig. 1. Distribution iu North America. P'- S5> %• A 47. Chrysalids. 



Egg. ^'"'"J"- 



PI. 17, fig. 8. Female, half of upper surface. 



PI. 66, fig. 31. Egg. jg Male, both surfaces. 



Caterpillar. . 37:21.22. Male abaominal appendages. 



PI. 77, fig. 28. Caterpillar at birth. 42:11. Neuration. 



30. Caterpillar iu stage iii. 43 : 11. Discal stigma of fore wing of male. 



31. Mature caterpillar. 49 : 3. Scales of the <iiscal stigm.i. 

 80:68-71. Front views of head in stages 59:6. Side view of head and appendages 

 i, ii, iv, V. enlarged, with details of leg structure. 



