58 



Setjm, 9 .S. dorsalis^ 8. dorsohteralis, tt. sHprastif/maliK in one lino, 



s. subdorsalig sup., 8. jMststigmalis, two or three «. infra- 



stigmales, s. basalts, one ». pi'ojyedalis. 

 „ 10. S. (iot'satis and s. dorsolateralix are wanting, «. supra- 



stig malts, s. sttbdorsalis sup., s. jwststifftnalis, two .s. infra- 



stigmales, s. propedalis and five or seven «. pedales with 



very long setae. 

 ^ 11. As there are no s. f>edalej< on the abdominal legs lam 



inclined to ascribe the setae pedales of segment 10 to a 



reduced segment 1 1 . 



Stfttopsis of the sub-order of the Jugatae. 



It is not possible to build up a pattern which they have in 

 common, as each family certainly possesses its own pattern and it 

 may be so with each genus. This may be expected as the Jugatae 

 most probably are not the immediate ancestors of the Frenatae. 

 Only in some respects they have preserved the primitive character 

 of the Ij<'pidopterou8 tribe in a better way. Where Uaxdlikpch 

 (1908) places the separation of the Frenatae from the Jugatae as 

 early as the Lias, because in Dogger and Malm the Palaeotineidae 

 already belong to the Frenatae (I.e. p. 1253 sqq.), this result 

 need not surprise us. 



When the setae alone are concerned I would rather conclude that 

 the Eriocephalidae descend from the Micropterygidae than the 

 reverse, but I admit that a system, only based on the form and the 

 number of the setae would be exceedingly artificial. Moreover there 

 is a possibility, that in this respect the Micropterygidae have 

 remained in a more primitive state, especially by their mining 

 habits, instead of the Eriocephalidae, which are exposed to all kinds 

 of exterior influences, by which the form of the setae might be highly 

 modified. The Eriocephalidae are the most specialized forms in a 

 progressive line, the Micropterygidae are perhaps reduced. The 

 different Hepialidae deviate very much from each other, the pro- 

 thorax is often highly reduced. It is of importance that a s. dor- 

 solateralis and a s. subdorsalis inf. frequently occur. 



