235 



the metathoracic scuta show an advance over those of Eriocephala in 

 being united on the median line instead ef separated; the meta- 

 scutellum is very large, longer and more scutellate than that of Erio- 

 cephala. 



The shape and venation of the wings are nearly identical with 

 those ot Eriocephala, being long, narrow, and pointed; both pairs 

 nearly alike in size and except that on the hinder pair there is a »ju- 

 gum« or angular anal fold, as inTrichoptera; the scales are of genera- 

 lized shape all over the wings. 



II. Neolepidopter a. 



This series may be divided into two sections, corresponding in 

 the main to the Pupae incompletae of Chapman (the Erioce- 

 phalidae and Micropterygidae included by Chapman being removed), 

 and his Pupae obtectae, for the first of which we would suggest 

 the names Tineoids, and for the second comprising the large broad- 

 winged forms or Macroplepidoptera, or Platylepidoptera. 



1) Tineoids or Stenop t erygia. 



These are Tineoid forms with many vestiges of archaic features, 

 usually with narrow wings, of dull hues or with metallic bars, or with 

 highly specialized shapes of scales and spots, and the venation genera- 

 lized in the earlier forms. The maxillae are sometimes aborted (wholly 

 so in Hepialidae , palpi either well develepod, more or less reduced, 

 or wanting; mandibles rarely occurring as minute vestiges; the thorax 

 Neuropteroid, in the more primitive forms becoming shorter and the 

 segments fused together in the later or more specialized groups. 



The pupae are incomplete; the more primitive forms with the 

 eye-collar; labial palpi visible; paraclypeal pieces distinct; abdomen 

 often in the most primitive forms with no cremaster. 



Larvae with 1-haired tubercles, the four dorsal ones arranged in a 

 trapezoid on abdominal segments 1 to 8, usually a prothoracic dorsal 

 plate ; the abdominal legs sometimes wanting in certain mining forms 

 and Cochliopodidae ; larvae often case-bearers or borers; crochets on 

 the abdominal legs in the primitive types arranged in two or more 

 complete circles ; in the loAvest forms a well marked spinneret. 



From the generalized types, many offshoots or lines of descent 

 arose whose position is difficult to assign until we know more about 

 the pupae, as well as the venation, so that the following grouping is 

 entirely provisional ; the more generalized forms are evidently archaic 

 and very primitive, and the members of the groups may be briefly called 

 for convenience Tineoids, from their general resemblance to the Tineina. 



The following is a provisional genealogical tree of the order, 

 based mainly on the pupal and imaginai characters. 



