166 Annals Entomological Society of America [Vol. IX, 



■Mandibles toothed, tips blackish. Labial palpi distinct, 

 penultimate segment truncate-conic, ultimate segment smaller 

 and cylindrical, not more than twice as long as thick, ter- 

 minating distad in three short, stout spines. Maxillary palpi 

 minute and inconspicuous, terminating in three minute articles. 

 Antennae distinct, basal joint truncate-conic, second segment 

 slender, cylindrical, about three times as long as thick; distal 

 ■extremity with an apical seta nearly twice as long as segment 

 bearing it, and four minute articles, one of which bears a short 

 seta. Ocelli five, arranged in semicircle just caudad of base of 

 each antenna; dark area in connection with each group. One 

 pair of setce on epicranium near mid-dorsal line; a similar pair 

 near mesal margins of ocelli groups; two strong setae on each 

 lateral surface of head near ocelli. 



Thoracic segments very finely granulose. Cervical shield 

 broad, black in color, strongly chitinized, smooth, widest at 

 mid-dorsal region; margins regular, anterior margin very 

 slightly conate, posterior margin slightly convex; covers greater 

 part of dorsal surface of prothorax. Meso- and metathorax 

 without traces of black, not strongly chitinized; color uni- 

 formly yellowish. Legs similar in size and color, each ending in 

 a single, strong curved claw. Each thoracic segment with three 

 pairs of well-developed setae on lateral and dorso-lateral surfaces. 



Cephalic margin of abdominal segments I- VII I bordered 

 with black; IX-X devoid of dark color. Dorsal surface of VII 

 and VIII darker than other segments. Posterior segments 

 becoming narrower; IX narrow. Prolegs on III-VI and X. 

 One pair of somewhat conical, fieshy projections on lateral 

 aspects of each segment; one short, ventral seta and a longer, 

 dorsal seta, latter about 0.27 mm. long, on each projection. 

 Segment IX with four pairs of well-developed setae on dorsal 

 and lateral surfaces. Segment X with a pair of short setae and 

 one pair of longer setae on dorsal surface; three setae, two short 

 and one longer, on each lateral surface; two setae on caudal 

 margin; and two very long setae, 1.06 mm. in length, extending 

 from the latero-caudal angles of posterior margin. 



Second histar. — This instar, as such, has not been described. 

 Forbes ('10, p. 221), in his account of the life history of this 

 species, states that "stage II" was "not seen; and no sign of 

 leaf-mining was noticed." The same writer describes "stage 



