316 [April 



median ; internal nervure arising from the base of the wing, straight. 

 short. 



The ornamentation is black, with sub-cyaneous abdominal and alar 

 shades ; the veins are black, regularly defining large white patches on 

 both wings. The insect mimics the butterfly Stalachtis heliconide* 

 H-S. The thoracic and caputal tegument, when denuded of scales, is 

 pitch-black, shining, as are the veins. Where the wing scales are black 

 the membrane beneath is of a pale blackish hue, where they are white 

 it is pale-yellowish. The prothorax beneath and the anterior femora 

 above are covered with orange-yellow hairs as in allied genera, but 

 these do not spread on the occiput above. 



Allied to Ctenucha Kirby, than which T consider it of higher value. 

 Iu that genus the % antenual pectinations are more numerous and the 

 stalk longer. The palpi in Callalucia are shorter, not so flexuous and 

 the third article is differently shaped, though somewhat similarly held. 

 The nervulation differs much from Ctenucha, since the third s. c. uer- 

 vule is furcate, discal space open. In Ctenucha the posterior wings are 

 7-veined, first, second and third nervules of the lower discal vein spring- 

 ing from one point and the costal and internal nervures arc wanting. 



Callalucia vermiculata. 



Omoiala vermiculata. Grote, Proc. Ent. Soc. Philad., Vol. 2, p. 334, PL 6, fig. 

 1 I . (Dec. 1863.) 



S 9 . Anterior wings dull black ; a small white spot on median vein 

 at base ; a large sub-triangular space on the disc of the wing, neatly 

 divided into three by the black median vein and its first inferior branch ; 

 a large oblique sub-apical white spot on the terminal space divided by 

 the black veins likewise into three, in the interspace between is a smaller 

 rounded similarly colored spot; fringes blackish; under surface resem- 

 bling upper. 



Posterior wings black with a very slight sub-cyaneous tinge; the 

 center of the wing is covered by a large white space, divided by the 

 black veins, under surface resembling upper ; fringes blackish with a 

 few whitish scales. Head covered with blackish hairs, with a white 

 spot on the vertex between the antennae ; palpi black, with a few yel- 

 lowish basal and scattered scales ; prothorax beneath covered with 

 orange yellow hairs which extend along the upper surface of anterior 

 femora. Thorax black ; tcgula? black tipped with a few white scales. 

 Abdomen black with a distinct sub-cyaneous tinge, wanting beneath, 

 and a lateral prominent white line. Exp. 1.80 — 2.00 inches. Length 

 of body .60 inch. 



Habitat. — Colorado Territory. (Collection Ent. Soc. Philad.) 



