462 ENTOMOLOGICAL SOCIETY 



partly surrounded by white, the borders touching except vi which is re 

 mote and separated by a yellow and white streak on the subventral fold; 

 ia+ib, iia-|-iib, iv-f-v. Anal feet with black bases. The larvae live under 

 a very delicate web on the back of a leaf, which is so fine that they appear 

 to feed exposed. The leaves are not drawn together at all. 



Desmia tages Cram. The larvae are leaf rollers on the Psycho- 

 tria undata. (See Journ. N. Y. Ent. Soc., March, 1901.) The 

 leaf is rolled up in several turns fastened with stitches on the out 

 side ; the larva eats out all within, the frass being retained in an 

 unsightly mass. The larva has a large cervical shield, blackish 

 luteous, bisected ; no anal plate. Body cylindrical, normal, the 

 incisures moderate ; transparent, colorless, the food dark blackish 

 green, reddish in the thorax. Tubercles large, colorless, faintly 

 blackish on thorax ; ia-f-ib, iia+iib, iv-|-v ; on abdomen iv-f-v 

 nearly in line longitudinally, iv a trace, dorsad. Tracheae and ex 

 cretory tubules white ; spiracles pale, testaceous rimmed ; setae 

 long, pale. 



These notes are on the penultimate stage ; the last one has been 

 described elsewhere. 



Marasmia trapezalis Guen. A specimen at light was named 

 by Prof. Fernald. 



Marasmia Jioridalis Fern. A bred specimen furnished one 

 of Prof. Fernald's. types. The larvae feed on the Vincetoxicum 

 palustre. They eat a turned over leaf, seed pod or bud, and rest 

 in an adherent case of web and whitish excrement which remains 

 on the leaf. The last two stages observed. 



Head slightly bilobed, full, rounded, clypeus high, the paraclypeal pieces 

 reaching vertex; one distinct large seta (ii), the rest minute; pale luteous ; 

 width .6 mm. Body short and robust, the segments 3 annulate, the an 

 terior annulet very small. Tubercles slightly elevated, moderate, color 

 less ; on thorax ia-j-ib, iia-j-iib, iv-f-v. Hair tubercles brown. Green, a 

 faint vinous dorsal line and transverse line on the posterior annulet of 

 each segment. A broad, faint, whitish, substigmatal band. Shields con- 

 colorous. 



Last stage. Head all green like the body; width .85111111. As before, 

 the lateral stripe very obscure. The larva is a hunched up little thing, 

 smaller posteriorly. Later the lateral whitish stripe is sharp above at the 

 spiracle, diffuse below; the vinous bands are brownish, obscure except 

 towards the extremities. Still later the red coloration is gone, the larva 

 is all green like a bit of the stem with the whitish lateral shaded band, 

 sharp above. 



Pyrausta costimaculalis Fern. Described from my bred speci 

 mens. The larvae are so similar in structure and habits to the 

 preceding that I supposed them to be congeneric till the moths 

 were obtained. The larva lives on the Psychotria undata. It 



