492 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



unicornis. A double row of dorsal warts not so wide apart and much larger than in 

 unicornis. The dorsal hump ou the seventh segment is not so high and is larger and 

 thicker than in unicornis, the two terminal warts larger; in front of this hump the 

 dorsal part of the body is dark green as far as the middle of the body, and it incloses 

 a round brown patch in the middle of the dorsal green area. The warts on the back 

 behind the hump are larger than in unicornis. The general color is reddish brown, 

 and it wants the two V-shaped silver dorsal patches which characterize unicornis. 

 Length, 10"™. 



22. Heierocampa pulverea G. and R. 



The caterpillar of this moth, according to Dr. Eiley, was observed in 

 Maryland feeding on the birch. See p. 160. 



23. Lockmwus sp. 



A caterpillar allied to, but very distinct from, L. manteo occurred on 

 the birch in " Virginia, September 14, 1882." (Riley's MS. notes.) I 

 have seen the two specimens, which are in the Department collection, 

 one of which has two dark red spots on the first abdominal and two 

 much larger distinct oval dark blood-red dorsal spots on the third ab- 

 dominal segment, while the body is of the color of the underside of a 

 birch leaf. 



24. Dryopteris irrorata Pack. 



Mr. Elliot tells me that he has likewise reared this species from the 

 birch in the vicinity of New York City. 



Moth. — This species is of a bright ferruginous or brick red, dusted above with 

 brown abbreviated lines and dots, but beneath clear reddish. 



Palpi and front of head of a bright rusty red, thorax and forewiugs slightly 

 shaded with brown. Both pairs of wings are marked nearly alike, being crossed by 

 transverse irrorations which are united into lines near the base of the wing. Within 

 the middle of the wing is a slightly curved irregularly zigzag dark line, which is 

 deeply sinuate in the median space. On the outer fourth of the wing is a line of the 

 same color, which makes an acute angle before reaching the apex of the wing and 

 then suddenly bends back upon the costa. Just beyond this line is a dark transverse 

 streak which only touches the outer edge at the lower part of the apex, which is 

 nearly black. Ou the secondaries are two parallel black somewhat zigzag lines, the 

 inner being half as long as the outer one. Beneath the outer line only is reproduced, 

 being straight on the fore wings, but a little sinuate on the hind wings. Expanse of 

 wings, 1.40 inch. 



25. Dryopteris rosea Walker. 



Mr. S. Lowell Elliott informs me that he has raised this moth from 

 larvte feeding on the birch in New York. He preserved no description 

 of the caterpillar. 



Moth. — Forewings very falcate, the body and basal two-thirds of both pairs of 

 wings roseate brown, sometimes yellow ; outer margin of the forewings and apex of 

 hind wings rosy brown, or color of a dead leaf. Expanse of wings 27™"". When the 

 body and wings at base are yellow (as in Walker's marginata) three rosy brown linea 

 cross both pairs of wings, the two basal lines being near together, the outer remote^ 

 with a deep rounded sinus near the costa, marked beneath nearly as above. 



