526 PROCEEDINGS OF THE ACADEMY OF 



Body rather stout. Thorax smooth, with scales. Patagia moderate, trape- 

 zoidal, not concealing the vertex. Breast and abdomen smooth except toward 

 the base ; legs rather stout, femora downy, the hind tibiae having four short 

 spurs. 



A. aulaea, Hubner. f. 913-14. Ecpantheria incarnata ? Moiise 



gray. Antennae black, whitish at the base. Labial palpi crimson, with 

 whitish hairs beneath. Head with a pale yellowish white band in front, above 

 the eyes, black-margined beneath, and a black circle between the antennae. 

 Patagia each with a black circle on their edges, and a pale yellowish white 

 stripe on the sides of thorax from the head to the base of fore wings. Tegulae 

 with two black-marginal lines, and the disk of thorax with a central line of 

 the same hue, and one on each side of it that corresponds to the upper one on 

 the tegulae. Fore wings with six irregular, oblique, pale yellowish white 

 streaks along the costa, bordered with black lines, with a black spot on the 

 disk beneath the third band. Beneath the median vein the wing is veined 

 with black lines enclosing pale yellowish white spaces, and between the 

 nervules on the hinder margin is a series of streaks of the same hue, black- 

 margined. Hind wings black, crimson toward the base, with a macular band, 

 of the same hue about the middle of the wing and one on the hinder margin. 

 On the under surface of both pairs of wings all the spots are crimson. Ab- 

 domen with a dark brown central band widening from the base and margined 

 with black, with a band on each side, crimson from the base to the middle 

 and thence to the tip luteous. Breast whitish, with a dark brown circle on 

 each anterior coxae, which are tinted with crimson internally. All the femora 

 crimson internally ; tarsi annulated with crimson. 



Unless Mr. Walker's description refers to this insect, I think it has not been 

 described since the time of Hubner. I have recognized the genus under which 

 this author placed it, because I regard the insect as distinct generically from 

 Ecpantheria. The two genera are, however, beyond doubt nearly related, 

 while at the same time the neuration of the wings shows close relationship to 

 the genus Arctia. 



Mexico, near Jalapa. 



Arctia, Schrank. 



Fore wings with the subcostal nervure having two marginal nervules from 

 near the end of the cell, and with a long, narrow costal cell formed between 

 the pecond marginal and subcostal vein, and extended a little beyond the 

 origin of the post-apical, or without this cell. The subcosto-inferior nervule 

 and the discal vein arises at a common point, and toward the apical portion 

 of the wing is given off the post-apical nervule and the apical nervulet. The 

 median vein 4-branched, the posterior nervule being very remote from the 

 others. Hind wings broader than the fore wings, as long or rather longer ; 

 neuration as usual in the family. Sometimes the neuration of the fore wings 

 varies from that of the typical species, in having a single marginal nervule from 

 the cell and another between the origins of the post-apical nervule and apical 

 nervulet, thus resembling the wing structure in Spilosoma ; in the latter, how- 

 ever, the second marginal arises on the interior side of the post-apical. 



Head small, rather sunken on thorax, hairy, and with ocelli. Face narrow 

 and hairy. Eyes small. Antennae in the j* shortly pectinated, in the? 

 serrated and sometimes slightly pectinated. Labial palpi porrected, hairy 

 and exceeding the clypeus by about one-half their length ; the third joint 

 subacuate, nearly or quite as long as the second joint. Tongue with slender 

 filaments, as long as the anterior coxae. 



Body thick. Thorax covered with thick hair. Patagia rather large, more 

 or less overarching the vertex. Breast rather hairy ; legs rather stout, with 

 all the femora hairy ; anterior tibiae longer than last joint of tarsus, with 

 tibial spur concealed, the posterior tibiae having four moderate spurs. 



[Nov. 



