OF WASHINGTON. 483 



Randia aculeata on the upper side, the mine marginal or becom 

 ing marginal, yellow, forming a large blotch sometimes obscuring 

 the early linear part of the mine. The epidermis becomes a little 

 swollen and succulent, and towards maturity the larva eats out all 

 or nearly all of these succulent cells, leaving the mine slightly 

 bladdery with thin brown skin. The larva emerges and spins a 

 white cocoon on an adjoining leaf. 



Larva not strongly flattened, moderately moniliform, without 

 marks. Head retracted, flat, clypeus triangular, reaching vertex, 

 luteous, mouth brown. Joint 2 flattened above, transparent, no 

 plates. Thoracic -feet rather large and prominent; abdominal 

 ones on joints 7 to 9 and 13. All light yellow, not shining. 



Chilocampyla dyariella Busck. The larva forms curious mines 

 in the leaves of Eugenia buxifolia and E. procera as remarked 

 by Busck. The mine is really almost a gall, as it is formed in 

 the young leaf which grows in a modified - manner. The early 

 mine is narrow, slightly wavy and uniform about .5 mm wide ; it 

 starts in the leaf and runs all about the margin on the under side, 

 often nearly around the leaf. The epidermis is whitish but the 

 leaf is unchanged by this part of the mine. At the end the larva 

 proceeds to the middle of the leaf where it forms a large, bladder- 

 like hollow that finally occupies nearly the whole of the leaf. 

 The two surfaces are swoollen a little, gall-like, succulent, pale 

 yellow or red. The space divides the midrib, half of it going 

 with eithjer surface of the flattened bladder. Finally the larva 

 eats out more or less of the succulent cells and the frass accumu 

 lates in the hollow. The larva escapes by a hole. 



Head rounded, not flat, apex under joint 2, clypeus nearly reaching ver 

 tex, unusually narrow; whitish, mouth broadly stained with brown; an- 

 tennoe short; two large black spots on ocelli with a brown one between; 

 setse distinct, white. Body somewhat flat though the dorsum is rather 

 well rounded. Entirely opaquish white without marks. Segments mo 

 niliform from dorsal view, a little irregularly creased, not annulate. Joint 

 2 large, the large shield concolorous ; 13 small with moderate shield, 

 faintly brownish tinted. Thoracic feet moderate, the anterior pair directed 

 obliquely forward, the others lateral, 3-jointed, normal. Abdominal feet 

 o.n joints 7 to 9 and 13, short and thick, without crochets. No feet on 

 joint 10. Setse white, some rather long, from very small tubercles. Tu 

 bercle iv has a large setae, but the others are nearly indistinguishable. 



Eucosmophora sideroxylonella Busck. The larvae form mines 

 on the upper side of the very young leaves of the Sideroxylon 

 pallidum. Linear and slightly widening, finally forming a great 

 blotch, the upper epidermis neatly split off. This soon becomes 

 tight on the young growing leaf like a delicate membrane and 

 curls the leaf, which is normal below. Membrane brown, lon- 

 gitu^iinally wrinkled, the leaf finally closing together. Then the 

 larva eats the parenchyma to the lower epidermis. 



