296 Mr. H. T. Stainton's Descriptions of 



furcate on both margins, but on the other wing this tendency is 

 hardly perceptible; in the aptx is a small violet spot; cilia pale 

 grey, intersected by some dark scales round the hind margin. 



Posterior wings grey, with paler cilia. 



Abdomen above grey, beneath pearly-white, with black bars. 



Anterior legs: tibiae white, with a dark grey patch at the base 

 and another at the tip; tarsi white, spotted with black; middle 

 legs — femora whitish ; tibiae white, with two black blotches ; tarsi 

 white, with black spots. Posterior legs: femora whitish; tibiae 

 and tarsi white, with black spots. 



I believe this to be a true Gracilaria, though of the smaller 

 group, in which sometimes the maxillary palpi are undeveloped. 

 It reminds one considerably of the European G. Cupediella, 



1 have before me eleven specimens bred from larvas found near 

 Calcutta by Mr. Atkinson, who kindly sent them to me. 



Five were bred from larva; mining the under side of the leaves 

 of Urena lobata ; six were bred from larvae mining the upper side 

 of the leaves of another plant (name unknown), but the perfect 

 insects appear identical. 



I annex Mr. Atkinson's descriptions of the two larvae: — 



•' Larva Mining Leaves of Urena lobata. May 25th, 1856. 

 — Very pale whitish-green, dorsal vessel deep green; head small; 

 jaws light chesnut ; legs concolorous with the body. 



" The larva first detachfes the lower cuticle for the full extent 

 of the mine, and then proceeds to devour the parenchyma." 



"Larva on ? June 4th, 1S56. — Of a uniform 



brilliant amber-yellow, transparent, smooth, with slight depressions 

 on the sides of each segment; jaws reddish; the alimentary canal, 

 when full, gives the appearance of a deep green band down the 

 back. 



*' The larva at first mines a very irregularly-contorted gallery 

 under the upper cuticle, and whilst engaged in this operation it 

 only consumes the juices which unite the cuticle with the paren- 

 chyma. Gradually the greater part or the whole of the surface 

 occupied by this gallery is mined, so as to form one chamber. 

 The upper cuticle becomes wrinkled, and slightly contorts the 

 leaf, so as to form a spacious apartment, and the larva proceeds 

 to devour the parenchyma. The leaf is not discoloured, but ap- 

 pears blotched with white, from the colourless upper cuticle. 



" When full grown the larva quits the mine, and forms a com- 

 pact orange or vermilion coloured cocoon, in a depression of a 

 leaf, or any other convenient place. After a few days the pupa 

 thrusts one end through the cocoon, and the moth escapes." 



