328 



setae betweon the primary warts and setae lias increased. More- 

 over there occur some scattered setae. The setae on the primary 

 tubercula are + 1 — l'/i ^^- long. The longest whieh are at the 

 sanie time the biggest, are foiind on the prothoracic shield and 

 on the anal shield. 



Frotliomx. On the prothoracic shield three setae, which in my 

 opinion represent .s\ dorsalis, s. dorsolateralis and behind it a small 

 one = 8. suhdormlis. V. sKprastigmaUs has three setae just as r.pro- 

 stif/malis. The seta behind v. i^uprastigmalis is also plumed. V. bascdis 

 with three setae. The small setae on the leg are not feathered. 



Mesothorax and metatJwrax. On the front-edge of the segment 

 a doublé row of spots, on the hind edge one row. 



V. dorscd/s has three setae, /'. dorMjlateraUs just as v. i^upradui- 

 maliii has two. There is a single i^eta prost/f/jiudis. One largo 

 V. hamlis and many small setae whieh, howevcr, are not fixed on 

 black tubercula. 



Ahdomen \ — 10 as in instar J, but: 



Seta iti.fr(iMi[/)naJis is single. Three setae, which are not united 

 and not implanted on a tuberculum, stand instead of r. poxMig- 

 malis. The number of s. hasales amounts to +10. 



Instar IV. Length +25 mm. 



Apparently this instar completely resembles the full-grown form. 

 Small setae, not plumed, are to be found everywhere. The spots 

 have become more numerous and bear setae of + 1 mm. long. 

 Still more than in instar III they are arranged in horizontal and 

 vertical rows and thereby give the impression of forming stripes. 



The primary tubercula may be recognised by the seta which 

 are longer (mostly 1'/^ mm.), and generally thicker too. They 

 have short ])lumes. On each wart there are more setae than be- 

 fore, wliicli is rather striking as during instar /, // and /// 

 tlie number is almost constant. 



As e.\am])los of the most intricate pattern of spots I chose 

 the prothorax and abd. 5, the others agree with these mu- 

 tatis mutandis. 



