51 



in. these groups.) That this Plochionus had not appeared this season 

 much to the east of St. Louis was evinced by the much webbed and de- 

 foliated orchard and forest trees noticed in Illinois and Indiana in Au- 

 gust and September. 



As Mr. Duffey proposes soon to publish a history of the insect, with 

 detailed descriptions of its various stages, I defer offering my own notes 

 upon its habits and forms until after the appearance of his paper. 



A FEW MORE INJURIOUS MICROS ON APPLE. 



A very considerable number of Microlepidoptera, including Pyralidw, 

 Phycitidce, Tortricidce, and Tineidce, have already been characterized 

 and catalogued among the more or less injurious insects of the orchard 

 and garden ; but the observations of almost every year add to this list, 

 and I propose here to briefly describe a few which have not as yet been 

 placed on the roll, but which in this locality are annually so numerous 

 as to commit appreciable injury. 



Penthina chionosema, Zell. — The larva3 of this beautiful species 

 were, last year, uncommonly abundant during the month of May on the 

 leaves of apple, particularly in young orchards. They fold the leaves 

 at the midrib, or sometimes one edge over to the midrib, fastening the 

 edges all around firmly and feeding upon the inclosed upper surface. 



Larva. — The larva is not especially characteristic, being of a pale opaque green 

 color, without inaculation, except the rather inconspicuous glassy piliferous plates. 

 Head pale yellow, tinged with green, legs similarly colored; length from 16 to 17 mm ; 

 diameter, 3 mm . Form subcylindrical, tapering but slightly either way from middle. 



When full grown it incloses itself under a rolled edge of the leaf, 

 lining and strengthening the tube thus formed with a white silken web. 

 The moth appears early in June, and I have no record of a later brood, 

 although there may be one. 



The original description, by Professor Zeller, is not accessible to me 

 at present, but it will suffice to note the following characters : 



Palpi and tuft of the head rich ferruginous, antennae scarcely half the length of 

 the wing, fine, gray brown. Thoracic tuft dark brown. Wing expanse from 15 to 

 16 mm — rather more than a half-inch. Ground color of primaries somewhat mottled 

 dark brown, with a slight suffusion of olive, diversified by three broad, indistinct, 

 irregular, obliquely transverse bands of purplish gray, having a somewhat metallic 

 reflection ; these transverse bands broaden toward the inner margin, where they 

 almost coalesce. On the costal edge is a large, milk-white, rounded triangular or 

 nearly semicircular patch, extending along the costa from the middle third, in- 

 clusive, almost to the apex, constituting a most distinguishing and ornamental 

 character. Cilia purplish gray. Secondaries, silky, pale brown with lighter fringes. 

 Abdomen and legs pale brown. Under side of wings pale, rosy brown, the large 

 costal spots on this side inclining to orange. 



Proteopteryx spoliana Clem. — The larva folds and webs into 

 clusters the young leaves of apple during the month of May, appear- 

 ing, preferably, on the shoots of small trees. 



