59 



spot. On the intersegmental membrane between the mesothorax 

 and the nietathorax there is a little pigmental spot without a seta. 

 At first I looked upon the spot behind 8. prostigmalis as a 

 rudimentary stigma and supposinl the last-mentioned little spot to 

 be accidental. After having read Boas, it seems to me a more 

 probable solution that the large spots agree with the wing-rudiment 

 (Pt.) and that the little spot is the rudimentary stigma (St.). 



Metathorax = mesothorax, but one «. baaalis is absent. 



Abdomen 1, 2, 7, 8. S. dorsalis^ s. subdofsalits, «. suprastigma- 

 lis, 8. infrastigmalis all with a large pigmental spot at the base, 

 a small s. prostigmalis which is oral and dorsal of the stigma, 

 8. poststignmlis is absent; s. basalts^ 8. pedalis, 8. vetUmlis. 

 Segm. 3, 4, 5, 6 = 1 but on the leg are three 8. ptvpedales 

 implanted on the oral side. 



, 9, 10 not clearly visible. 



I draw attention to the fact that the imago of Zemera pyrina L. 

 shows an extraordinarily primitive pattern. 



The agreement between Coxxm cos^us L. and Zeuztra pyrina L. 

 is exceedingly great, only the prothorax being different. Cossus 

 also has two s. in fra^tig males and Zeuzera has only one. I think 

 we may speak of a definite fundamental plan, but are obliged to 

 consider the full-grown specimens at least, as somewhat modified. 

 S. poststigmalis occurs in Cossus but not in Zeuzera^ so that Cos- 

 sus has evidently got more setae than there should be according 

 to the fundamental plan and therefore is more modified. 



QuA.lL (1904) gives two s. infrastigmales on Zeuzera eucalypti^ 

 instar 7, but does not indicate a s. poststigmalis. Neither does he 

 draw 8. prostigmalis. 



Family Psychidae. Dyar (1899), Fracker (1915). „The setae are 

 very minute in later stages, in many cases it is impossible to 

 find them without a prolonged search. Abdomen with x, (3, §, p 

 (s. dorsalis, s. dorsolateralis, s. suprastigmalis ?) in an almost 

 straight line above the spiracle" (PL I, fig. 6 after Dyar 

 1. c. p. 179). 



