870 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxv. 



black; dorsal half ineludint^ apex lio-ht ocherous brown, in some speci- 

 mens whitish. The limit l)etween these two parts of the wino- is not 

 very detinite and somewhat variable. 



In the dark costal part are found lig-hter, yellowish brown, irreg-ular 

 patches, one large indistinct at the middle of the costa, one small 

 rather more distinct costal spot at the beg-innino- of the cilia and in 

 some specimens others not well defined. In the dorsal light part of 

 the wing are ill-defined darker shadings and the veins are indicated 

 darker so as to produce a striate effect. On the fold at the l)asal one- 

 third is a small nearly black spot which seems to be constant. Like- 

 wise is a row of black dots around the apical edge constant in all 

 my specimens. The other markings are more or less varying. 



Hindwings a little broader than forowings, light bluish fuscous; 

 cilia 3'ellowish. Abdomen yellow. Legs dark purple with yellowish 

 white liars on the outside and with tarsal white annulatioiis. 



Alar expanse. — 16 to 17 mm. 



Habitat. — District of Columbia. 



Food plant. — Ilihiscus moscheutos. 



Type.— No. 6383, U.S.N.M. 



This species is quite near to the foregoing species, ochreostrigella 

 Chambers, but not so conspicuously streaked and with light, dark 

 annulated, third joint of labial palpi instead of the uniformly dark, 

 nearly black, terminal joint in ochreodrigMa. 



I have reared this varial)le, but always easily recognized species 

 repeatedly from the common swamp rose mallow. 



The larva is rather large when full grown in proportion to the 

 imago, l)eing 22-23 mm. long and with greatest width 2.2 mm. It is 

 cylindrical, only slightly tapering fore and back. Head rounded, 

 shorter than wide, black with reddish brown vertex; width, 1.3 nun. 

 First thoracic segment somewhat narrower than the following joint, 

 reddish; thoracic shield black; width, 1.6 mm.; length, 0.7 mm.; 

 straight in front and nearly straight posteriorly. Second thoracic 

 segment dark reddish, with anterior part white above. Third thoracic 

 segment and the rest of the body white; on the posterior half of this 

 joint begin six wav}' narrow interrupted longitudinal dark reddish dor- 

 sal lines, which run through on all the rest of the segments. These 

 lines are darker in the 3"oung larvoe, which otherwise are like the full- 

 grown larva?. Tubercles shining deep black, bearing short black hairs; 

 they are arranged conspicuously on the white part between the dark 

 lines. Ventral part of the abdominal segments white. Thoracic feet 

 black; abdominal prologs normal, white, with a complete circle of 

 brownish hooks. 



The larva feeds on the leaves or in the capsules, generall}'^ in large 

 numbers together; when read}^ to pupate they partially bite off one or 



