19 



leaf when young is folded thus and if the caterpillars take posses- 

 sion at this time, they can easily fasten the edges so that the leaf 

 will not open. I have found them sometimes within a leaf folded 

 together helow, which would be a more difficult matter to ac- 

 complish. Usually there is one larva to a leaf, but I have often 

 found several, in one instance 7 were found in one leaf. When 

 young, they begin feeding at the apex of the leaf; and gradually 

 work downward, folding together more and more of the leaf as 

 they need it for a hiding place. They eat the substance of the 

 leaf except the lower epidermis, which is left in a dried up con- 

 <lition enclosing a mass of "frass" which the caterpillars have 

 produced. Pupation takes place with only a slight cocoon, within 

 the folded leaf. 



Caterpillar. — (Plate III, fig. 7). Length about 20-22 mm.; 

 pale yell(jwish green; head similar to O. accepta except that the 

 two oblique marks near top of head in front are absent, the 

 two spots in the face ar(> much smaller and fainter, and there is a 

 black dot at each postero- ventral angle of head. Cervical shield 

 with l)lack lateral and posterior margin, fainter posteriorly, often 

 interrupted in dorsal part; two black spots in lateral lobes, the 

 anterior one elongate, the posterior one a mere dot. Tubercles i, 

 ii, iii and iv -t- v of segment 3 very conspicuously black-margined, 

 those of segment 4 nearly as black-margined, and i, ii and iii of 

 segments 11 and 12 are also nearly as black-margined, those of 

 the other segments more or less margined also. 



Pupa. — Length 12-14 mm., very pale uniform brownish; leg- 

 and antenna-cases extending a little l)eyond 5th abd(^minal 

 segment; in other respects similar to other Omiodes pupae. 

 Pupal period about 12-14 days. 



Ojuiodes iridias Meyr. (Plate II, fig. O). 



" ^ 9 . 27-28 ram. Head and thorax dark fuscous, with white line 

 above eyes. Palpi dark fuscous, lower half white. Forewings rather 

 long, termen slightly sinuate beneath apex; dark fuscous, irrorated with 

 dull purplish; lines obscurely paler, first obtusely angulated above 

 middle, obsolete on costa, second very obtusely angulated below middle, 

 straight or slightly curved on upper portion, sinuate inwards below an- 

 gulation; enclosed median band in $ hardly darker, somewhat ferru- 

 ginous-mixed on dorsal half, in 9 blackish except towards costa, upper 



