OP ARTS AND SCIENCES. 249 



somwehat altered, on the hind wings, and a fine Mack premar- 

 ginal thread runs helow the tail. Expanse 60 mm. Caterpillar : 

 Undescribed ; feeds on Morus and Madura tinctoria. — Texas, 

 occasional. 



Tribe AGERONIINI. 



Bvtterfly : Antennae very long and rather slender, the club slen- 

 der, very elongate and gradually incrassate, bicarinate on the 

 inner side and deeply sulcate between the carinae. Palpi as in 

 the preceding tribe. Wings ample, simple, the hind wings well 

 rounded with subcrenulate margin; cell of both wings broad and 

 closed. Legs moderately stout, compactly clad, the last tarsal 

 joint with two rows of spines. Egg: Short barrel-shaped or 

 rounded, with few (about 10) low vertical ribs often run together 

 above. Caterpillar at birth : Trichomes shorter than the seg- 

 ments, apically knobbed. Mature Caterpillar : Head subquaclrate, 

 crowned by a pair of very long, equal or apically enlarged, widely 

 diverging, briefly aculiferous spines. Body armed with tapering, 

 briefly aculiferous spines of very unequal length ranged in series 

 (one or two spines mediodorsal) most important in the upper series 

 and toward the extremities of the body. Feeds on Euphorbiaceae. 

 Chrysalis : Slender and elongate, laterally keeled over most of 

 the body, dorsally gently hunched on mesothorax and sometimes 

 at base of abdomen, the frontal projections of excessive length, 

 strongly divergent and tapering. 



Amphichlora Felder. 



Butterfly: Antennae long, the club long and slender, not more 

 than twice as stout as the stalk, gradually incrassated. Wings 

 ample, the fore wings with the costal margin faintly emarginate at 

 the end of the long cell, the costal vein swollen, the first two 

 superior subcostal nervules arising near together just before tip of 

 cell, the third not far beyond it, and hugging the main vein for 

 the first part of its course; vein closing the cell tortuous and 

 striking the median vein well before its last forking. Fore tarsi 

 of male with a flat mat of diverging hairs. Egg: Barrel-shaped, 

 with 10 vertical ribs; laid singly or in columns. Caterpillar at 

 birth: See tribe; makes a perch along a midrib with frass and 

 covers itself with its own dung pellets which rest between the 

 trichomes. Mature Caterpillar: Coronal spines of head three 

 times as long as the face; inequality of spines of body less marked 



