470 LITHOSIAJD T.. 



dorsum grey ; legs grey, the fore coxae crimson. Fore wing dark 

 grey irrorated with white especially below the cell; a diffused 

 waved postmedial whitish band, excurved from below costa to 

 vein -1, then incurved. Hind wing semihyaline whitish, the veins, 

 costal, inner, and terminal areas suffused with grey. 



Ilab. Mexico, Mexico City (Muller). Exp. 36 millim. This 

 species is unknown to me, figured from a drawing from type in 

 U.S. Nat. Mus. 



1985. Euchffltias egle, insert : — 



ab. ci/chcn, H. Edw. Papilio, iii. p. 1-18 (1883). 



Fore wing with indistinct diffused oblique postmedial hand with 

 dentate outer edge. 



Larva. Girault, Ent. News. Philad. xxiv. p. 53. 



Gregarious on milkweed, resting in clusters and forming masses 

 of cocoons from the hairs of the larvae on the surface of the 

 ground. 



*1986 a. Euchaetias cressida. (Plate LX1V. fig. 20.) 

 Euchsetias cressida, Dyar, Pr. U.S. Nat. Mus. xliv. p. 284 (1913). 



o. Head pale grey in front, orange on vertex; thorax white 

 with a greyish tinge; abdomen orange with dorsal and lateral 

 series of black spots, greyish white ventrally. Wings glossy white ; 

 underside of* fore wing grey. 



Hah. Mexico, San Luis Potosi, Cerritos (Miiller). JExp. 

 34 millim. This species is unknown to me, figured from a drawing 

 from type in U.S. Nat. Mus. 



11)77 a. Stenarctia griseipennis. (Plate LXIV. fig. 21.). 

 tinis, Empsn. A. M. N. il. (8) viii. p. 410 (1911). 



6. Head and thorax grey tinged with brown; palpi black at 

 sides; t'rons with black bar; antennae black, the shaft, white above, 

 the tuft on basal joint crimson, a black spot between their bases 

 and crimson points behind them; tegiilae with blackish spots at 

 dorsum, the prothorax with blackish streaks; pectus 

 whitish with pale crimson streaks below the shoulders ; coxa- pale 

 crimson, the fore coxa' with black spots, the legs striped black 

 and whitish; abdomen fulvous yellow, the extremity crimson; 

 subdorsal black spots except at base and extremity and a dorsal 

 Mad, -p,t on penultimate segment, sublateral series of black spots 

 and a ventral series excepl at extremity. Fore wing grey with 

 pale streaks on the veins; a subbasa] black point below costa; an 



lies of diffused fuscous streaks in the intersp. 

 obliquely-placed medial black- spots on costa and in cell, a discoidal 

 nid spot above it on costa; a curved fuscous postmedial shade 



