THE CANADIAN ENTOMOLOGIST. 243 



the larvse, and as the moth is not attracted by lamp-light, I began to 

 despair of ever replacing the lost specimens. During the past summer, 

 however, I was successful in taking several of the larvae, from which I 

 obtained three imagines, and am thereby enabled to prepare the history 

 of the insect for publication 



(My acknowledgments are here due to Mr. V. T. Chambers for the 

 generic determination of this and the following species, and for much 

 other assistance in my studies of this group of Micros. I am also 

 indebted to Prof O. S. Westcott, of Chicago, for valuable suggestions as 

 to the selection and etymology of the names ) 



Imago : Alar expanse 0.35 inch, length 0.20 inch. General color of 

 head and body crearn-white, shading to buff on abdomen. Head varie- 

 gated with fuscous scales ; vertex roughened but scarcely tufted ; palpi 

 slightly exceeding the vertex, second joint brush-like, terminal joint 

 smooth and slender ; antennae rather short, dingy white, obscurely annu- 

 lated with fuscous. 



Ground color of primaries dingy white, thickly overlaid with fuscous 

 scales arranged' in eight or nine obscure vittae, most pronounced on apical 

 third, with a more or less distinct fulvous spot on the outer edge of disk ; 

 outer margin dark • ciliae checkered white and fuscous. Secondaries 

 silky, pale cinereous. Legs cream white, tibiae of hinder pair clothed 

 with long, somewhat iridescent hairs ; tarsi with fuscous annulations. 



The larva inhabits a fusiform case formed by webbing together the 

 slender divisions of the leaf, from which it eats the parenchyma of the 

 upper surface, the latter being folded inside. Its average length is 0.35 

 inch ; slender, cylindrical, sub-monihform. Head small, polished, dark 

 brown. The arrangement of colors on the body is striking and character- 

 istic. First segment narrow, dark brown with small, transversely oblong, 

 yellowish shield. Second and third and sixth and seventh segments 

 velvety black or very dark brown, with conspicuous milk-white fold on 

 posterior edge. fourth and fifth segments uniform velvety black. 

 Remaining segments similar with the addition of an oblique lateral white 

 band on each anterior edge. Hairs fine, short and black. The larva 

 makes several cases in the course of growth and changes to pupa within 

 the last, enclosed in slight cocoon. The imago appears in July and early 

 in September. 



Gelechia formosella. — This species bears considerable resemblance 

 to G. maculimarginella Cham., but is nearly one-half larger, the alar 



