NATURAL SCIENCES OF PHILADELPHIA. 159 



it subdivides, first near the disk, into a subcosto-inferior branch, and then into 

 an apical and post apical branch. The discal nervure is very irregular, and 

 sends from its costal portion a disco-central nervule, whilst the middle of the 

 disk contains a bifid false nervule. The internal nervure is bifid at its base. 

 In the hind wings the costal and subcostal nervures intersect at their bases. 

 The subcostal is bifid near the disk. The costal portion of the discal nervure 

 is angulated, and forms likewise an acute angle in the middle of the disk, 

 whence a false nervule proceeds to the base of the wing, and obliquely joins 

 the median system, giving rise on the median side to a disco-central nervule. 



Body stout or very stout, thorax covered thickly with flat hairs. Head 

 quite small ; eyes small and oval. Labial palpi somewhat exceeding the head, 

 slightly curved, more robust in the <^ than in the 9 '> third joint small and 

 conical, about four times less long than the second and slightly hirsute be- 

 neath. Tongue none. Antennae rather more than one half the length of the 

 body. Abdomen shorter than the hind wings. Fore legs long and rather 

 slender ; fore tibiae and tarsi moderately ciliated ; middle and hind tibia? 

 thickly ciliated, with two moderate apical spurs on hind tibiae. Male. An- 

 tennae, basal half pectinated. Female. Simple. 



E. stimulea . Body and fore wings uniform dark ferruginous, with two 

 small subapical white spots, and in the $ two inore near the base of the wing 

 beneath the median nervure. Hind wings pale reddish-brown. 



Larva. Body semicylindrical, truncated obliquely before and behind, with 

 a pair of anterior, long, fleshy, subvascular slenderly spined horns and a pair 

 smaller beneath them, above the head ; a posterior similar pair and a smaller 

 anal pair beneath them. The superventral of papulae are rather large and 

 densely spined. After the last moulting the longer horns become moderate 

 in length. 



The portion of the body between the anterior and posterior horns is a fine, 

 bright green color, bordered anteriorly and superventrally by white, with a 

 central, dorsal, oval reddish brown patch bordered with white, which color is 

 again edged by a black line. The horns, papulae and anterior portion of the 

 body are reddish brown, with a small yellow spot between the anterior horns, 

 while the posterior pair are placed in a yellow patch. 



The spines with which the horns are supplied, produce an exceeding pain- 

 ful sensation when they come in contact with the back of the hand, or any 

 portion of the body on which the skin is thin. 



On a great variety of plants ; fruit trees, the rose, Indian corn, (Zea mays) 

 and a number of other plants. 



E. paenulata . Body dark reddish brown. Fore wings dark reddish- 

 brown along all the borders, with a large, central pea-green patch, extending 

 from the base of the wing to the subterminal portion, bordered narrowly on 

 the inner side and behind with white, and deeply indented opposite the mid- 

 dle of the inner margin, where there is a bright brown patch in the reddish 

 brown border. Hind wings yellowish brown. 



I do not know the larval state of this species, and have only two specimens, 

 both apparently females. I can perceive no differences in the structural char- 

 acters of the imago of this and the previous species, and am quite sure that 

 they belong to the same generic group. The discovery of the larval form will, 

 however, determine the question. 



From Mr. Robert Kennicott, Illinois. 



NOCHELIA. 



In the anterior wings, the subcostal nervure is remote from the external 

 margin, and the costal arises from its base ; it gives off a marginal branch 

 near the posterior end of the disk, and another exterior to the disk. The sub- 

 costo inferior branch arises nearly midway between this latter and the post- 



1860.] 



