358 



R e c a p i t u 1 a t i o n. The liomogeneous setae together with the 

 umbrella-shaped ones, which in Smerinthus tiliae are found by 

 the side of the primary pattern, have almost entirely replaced 

 the old pattern in iustar I. In instar II it is replaced by short setae. 



Pterogon proserpina Pall. and P. f/orf/oniades Hb. in the col- 

 lection Kallenbach are homogeneous in the two last stages and 

 are covered with thin and small setae. 



Macroglossa stellatarum L, M. croatica Esp., Reiuaris scabiosae 

 Z. and H. fuciforniis which are all in the collection Kall. as 

 the last instar of caterpillars, are naked. 



Family Lithosiidae. The setae and verrucae are arranged accord- 

 ing to type I, the same as in Arctiidae. 



Fkack?:r (1915, p. 118) saw no other species than those with 

 setae instead of verrucae. This family is rherefore probably rather 

 primitive. liho on the abdomen and Pi on the mesothorax and 

 metathorax are doublé and froni this Fracker concludes the 

 reduction of the verrucae to setae. 



The collection Kall. had no material for investigation. 



Family Arctiidae. In this family the arrangement of the ver- 

 rucae is very distinct, so that Dyar (1894) gave the name of 

 Arctian type to an arrangement which almost completely agrees 

 with Type I. 



Fracker (1915, p. 114 — 118) gives a table of genera with 

 which he himself is not satisfied. 



This writer thinks that the genera Boa and Vfetheisd are reduced, 

 as they only bear setae and no verrucae. I might add Hipocrita 

 {Euchdid) but think that this condition should rather be considered 

 as something primitive. 



To prove his opinion he says (discussing the Nodtiidaf, 1. c. p. 113) 

 that I)oa possesses a multisetiferous leg-plate and that the Pi- 

 group on the metathorax of Utetlmsa is bisetose. 



I am not convinced by these arguments, as the setae on the 

 legs of primitive caterpillars are often numerous and the thorax 

 in ft-eneral often bears two .s. hascJef^. 



