363 



that it is iiot alli)vvcd to liomologize a primary with a secondary 

 seta. The maiiy catorpillars in the coll. Kall. agree with Fracker's 

 i>'r()ups. As examples of the 4th group I mention Acronycta alni, 

 whcre the s. siihdorsales reach a great length and Diloha coeru- 

 locepJiala L. 



I should liko to propose a 5th group viz.: 



V. The setae or the verrucae have disappeared, the pigmental 

 spots on the tubercula remain. e.g. Nonagna {Dcpressana) nervosa. 

 Coll. Kall. PI. XIII, fig. 10. 



Maiiiestra hmssicae Linn. 



This species belongs to group /, Plate XIII, fig. 8 a, b. 



Prothorax. S. dorsalis^ s. subdorsalis, s. siiprastigmalis, s. pro- 

 stigmalis, three s. hasales, s. propedalis^ s. postpedalis^ s. ventralis. 



Mesothorax and Metathorax. S. dorsalis, s. dorsolateralis, s. su- 

 prasUgmalis^ s. prostigmalis^ s. poststigmalis^ two s. basaJes, s.pro- 

 pedalis^ s. postpedalis^ s. ventralis. 



Ahdomen. 1 — 9. S. dorsalis.i s. dorsolateralis, s. suprastigmalis, 

 s. prostigmalis (very small) ; s. poststigmalis, s. infrastigmalis, 

 two s. hasales, s. propedalis, s. ventralis, some setae pedales 

 which are also developed in 1, 2, 7, 8, 9. 



It is therefore quite lik e type I. 



Acronycta psi Linn. Plate XIII, fig. 9 a, b. 



I only want to draw attention to the folio wing segments which, 

 side by side of the verrucae I am going to mention, also have 

 secondary setae, especially on the ventral half. 



Metathorax. V. dorsalis, v. dorsolateralis, v. suprastigmalis, some 

 ö'. prostigmales, v. basalis, some s. propedales. 



Abdomen 1. V. dorsalis has grown enormously and has blen- 

 ded with that of the other side to a fieshy stump. V. subdorsalis 

 small, but still recognisable, v. suprastigmalis, s. prostigmalis, 

 s. basales, ik pedalis. 



Scgin. 2 = 1, but without a horn, r. dorsalis "is smaller than v. 

 subdorsalis. 



„ 8. V. dorsalis, v. subdorsalis, (united with that of the other 



