THE CANADIAN ENTOMOLOGIST 273 



the central two accompanied each In- two short white seta? and 

 the outer two each by a single one. Warts large, black, with 

 numerous set?e, of which the double dorsal row and the lateral 

 row of long black ones is still present, these hairs tending to become 

 white towards their apices; besides these tubercle III has a single 

 very long white hair pointing sideways. The dorsal seta? are 

 mostly black and tubercle II contains about 12, arranged in two 

 concentric rows around the loi)g central seta; tubercle I is small 

 with three short whitish setie; the lateral tubercles contain each 

 10-12 white setae. On the meso- and metathorax tubercle IV is 

 again represented by a single short seta, whilst below it the 

 secondary tubercle now contains two white setae. 



Stage IV. — Head as before. Body dull black blotched dorsally 

 with velvety black; warts black; a broad pale yellow dorsal stripe 

 often considerably tinged with orange; subdorsal stripe reduced 

 to round white spots on anterior portion of each segment, occasion- 

 ally lengthened posteriorly; a subspiracular waved white stripe; 

 legs and prolegs pale orange; spiracle ochreous ringed with black; 

 setae much as before, but greatly increased in number, the long 

 dorsal setae are now whitish in colour and besides these there are 

 several rather long black ones from tubercle II, the remainder 

 being considerably shorter; tubercle III with the very long white 

 seta pointing outwards and the shorter black one pointing upwards 

 as in preceding stage; all lateral setee white. 



Slage V. — Much as in the preceding stage; the dorsal stripe 

 often assumes a more orange hue whilst the subdorsal row of dots 

 remains white and is occasionally almost wanting; the subspiracular 

 stripe is overlaid with smoky and not so sharply defined as in 

 previous stages; apart from the subspiracular ones the setae arc 

 mostly dull black and only very slightly barbed, any white ones 

 occurring on the dorsal and supraspiracular tubercles being very 

 short. The orange central portion of the spiracle often tends to 

 become obscure. This is the final stage for the male larva. 



Stage VI {9 ) — Practically as in the preceding stage with a 

 considerable increase in size. The full grown larva may be at 

 once distinguished from that of arge by its blacker body colour 

 and the lack of the continuous subdorsal stripe which in michabo 

 is reduced to small spots. Dr. Dyar (Jour. N. Y. Ent. Soc. VIII, 



