44 



The following species were examined : 

 Prolimacodes scapha Harris 



Bitclea dclphmii Boisduval, chloris Herrich-Schaeffer 

 Sihine stimiilea Clemens 



Family Pyromorphidae 



This family is much more specialized than either the Megalopy- 

 gidae or the Eucleidae and resembles them but little. The body is 

 flattened and has lost the power of motion except in the abdomen. 

 Abdominal segments 2-7 are free in the male and 2-6 in the female. 

 The appendages are also very slightly soldered together. The pres- 

 ence of, spines on the abdominal segment, together with the absence 

 of maxillary palpi, is considered sufficient evidence that it belongs to 

 the superfamily Eucleoidea. Figures 24 and 25 show the essential 

 points of its structure. The only genus available for study was 

 Harrisina. 



The following species was examined : 

 J-Jarrisina americana Guerin-Meneville. 



Generalized pupae with maxillary palpi 



The remaining pupae which retain either free segments cephalad 

 of the fourth abdominal segment or free appendages, have followed 

 two distinct lines of development. In the first group the generalized 

 condition of the body found in the Eriocraniidae has been retained as 

 to comparative length of segments and the covering of the dorsum of 

 the abdomen with fine spines. The metathorax is nearly always more 

 than half the length of the mesothorax, while the prothorax tends to 

 become shorter at the meson and broader at the lateral margins, so 

 that each half appears triangular. In the second group, the covering 

 of spines on the dorsum of the abdomen has been gradually changed 

 and there is one very well-developed row of spines at the cephalic mar- 

 gin of each segment, with or without a similar caudal row. In this 

 group the prothorax is longer and somewhat quadrangular in shape 

 and the metathorax is relatively shorter. This group includes the 

 superfamilies Tineoidea and Tortricoidea, and being much smaller 

 than the other will be considered first. 



Superfamily TINEOIDEA 



The families included here possess one row of spines along the 

 cephalic margin of the dorsum of the abdominal segments, and well- 

 developed maxillary palpi. In one family, Prodoxidae, the primitive 



