OF WASHINGTON. 469 



high ; yellowish testaceous, mouth dark, ocelli black ; antennae 

 rather long ; width 1.2 mm. Body ratherthick, the ends rounded, 

 not tapering ; segments obscurely 2-annulate, incisures folded. 

 Tubercles large, elevated, colorless, iv-f-v in one tubercle, v 

 small. Translucent, slightly olivaceous, not shining; food green, 

 slightly obscured by the opacity of the skin. Setae moderate, 

 pale ; feet normal. No marks. 



Lepidoptycha maculana Fern. Described from my bred spe 

 cimens. The larvae feed on Schcepfia arborescens. The earliest 

 larvae mine the leaf, a linear crooked mine, often somewhat ex 

 tensive, the frass pushed out the entrance hole on the under side 

 of the leaf. The larvae are colorless, the food green. Later larvae 

 unite overlapping leaves and finally turn over the end of a leaf and 

 eat the inside, the leaves fastened with white silk. 



Penultimate stage. Head pale testaceous, mouth broadly brown, eye 

 black, a curved black line behind it on lower angle of cheek reaching round 

 to near vertex and perfectly visible through the transparent cervical shield 

 when the head is retracted ; width .4 mm. Body cylindrical, rather thick, 

 translucent whitish, food green. Segments obscurely annulate ; tubercles 

 colorless but rather distinct, small ; iv -(- v. 



Last stage. Head faintly brownish, sutures of clypeus brown and a line 

 on posterior edge of lobes, blackish ; width .6 mm. Cervical shield large, 

 faintly testaceous, transparent. Body translucent, shaded with pale slate 

 over the sides and dorsum of joints 10 and n ; $ glands brown ringed as 

 if segmented. Anal plate transparent. Hair tubercles black. Tubercles 

 iv -|- v. Spiracles black; tracheal line visible, food green. Setae pale, 

 moderate. Skin minutely dusky granular. The 9 glands are broad white 

 bands in joint 10. Male larvae when ready to spin had the glands dark 

 vinous ; body waxy white, sordid tinted ; food a narrow, dark, sinuous line. 



Episemus argutanus Clem. The larvae occurred on the Eu 

 phorbia heterophylla which is a common plant in waste places. 

 They bend up a young leaf on the upper side and fasten it with 

 white silky web at the edges, the under side of the leaf forming 

 the outside of the abode so formed. The leaves so fastened become 

 much distorted with growth and folded between the veins which 

 are firmly held by the silk. The larva eats off the terminal end 

 of its abode, keeping it closed with silk, and later forms a new one. 



Larva. Head rather elongate, pale greenish brown, showing two black 

 spots on the ocelli and a narrow line posteriorly on the lower angle of 

 cheeks; mouth brown; finely dark lined .on labium ; width about .7 mm. 

 Body moderate, tapering a little at the ends, not elongate ; colorless, trans 

 parent, the blood faintly green, food dark green ; cervical shield concolor- 

 ous ; anal plate faintly brown. Thoracic feet black, except at base ; abdom 

 inal ones short, not colored. Tubercles faintly brownish, rather small, 

 the central hair tubercle black; iv + v; iii on joint 12 situated almost 



