819 



spot. On the iiitersegmental inonibrano between thi; mcsothorax 

 and tlu' metathorax there is a little pigmental spot without a seta. 

 At first I looked upon the spot behind s. prostifimalis as a 

 rudimentary stigma and supposed 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 s. basalis is absent. 



Ahdomen 1, 2, 7, 8. S. dorsalis^ s. snhdorsaUs^ s. suprastigma- 

 lis, s. infrastigmaUs all with a large pigmental spot at the base, 

 a small ö\ prostignialis which is oral and dorsal of the stigma, 

 s. poststigmalis is absent; s. basalis^ s. pedalis^ s. ventralis. 

 Segm. 3, 4, 5, 6 = 1 but on the leg are three s. iwopedales 

 implanted ou the oral side. 



„ 9, 10 not clearly visible. 



I draw attention to the fact that the imago oï Zeuzera pyrinaJj. 

 shows an extraordinarily primitive pattern. 



The agreement between Cossus cossus L. and Zenzera pyrina Ij. 

 is exceedingly great, only the prothorax being different. Cossus 

 also has two s. infrastigmales 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. 



QuAiL (1904) gives two s. infrastigmales on Zeuzera eucalypti, 

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

 draw s. prostigmalis. 



Family Psychidae. Dyar (1899), Frackek (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" (PI. X, fig. 6 after Dyar 

 1. c. p. 179). 



