372 THE CANADIAN ENTOMOLOGIST. 



size as ihe body, shiny, jet l)lack;, slightly depressed at apex, sparsely 

 covered with slender blackish and silvery hairs, with a number of short 

 light rust-red hairs around the mouth-parts. Bristles from the black 

 tubercles on the dorsum, black. Dorsal tubercles on 12th and 13th seg- 

 ments bear three or four long hairs. Upper half of stigmatal tubercles 

 bear black bristles, lower half rust-red bristles. Bristles from all tubercles 

 beneath spiracles bright rust-red. On dorsum of segment 2 the bristles 

 from front half of tubercles are bright rust-red. These turn down over 

 the face, and give front portion of larvae a reddish appearance. Spiracles 

 orange, in some specimens faint. Skin of body deep velvety black. 

 Thoracic feet shiny, jet black, sparsely covered with short rust-red bristles. 

 Prolegs', upper two-thirds shiny, jet black ; lower third and claspers dull 

 reddish ; the whole bearing short rust-red bristles. 



On the 23rd July three larvae passed the sixth moult, and by the 31st 

 all but a few had moulted. 



Stage VII. — Length 24 mm. General appearance, velvety black 

 larvae with black tubercles, bearing short stiff black bristles on dorsum, 

 and bright rust-red bristles from the tubercles below stigmata. In some 

 specimens there is a distinct clear ochre-yellow dorsal stripe, expanded 

 somewhat in the middle of each segment. In others, instead of the 

 dorsal stripe there is a series of elongated spots of the same colour, one 

 on each segment; the number of spots constituting this series varies, some 

 specimens having as many as nine, others only one or two. Head 2.5 to 2.8 

 mm. wide, slightly smaller than second segment; shiny, jet black, depressed 

 at apex, and sparsely covered with short reddish hairs, and some long 

 slender blackish hairs, the reddish hairs being mostly around the mouth- 

 parts. Base of antennse and mentum pale. Bristles from dorsal tubercles 

 black. On dorsum of segment 2 the anterior half of tubercles bear rust- 

 red bristles, which turn down over the face. In some specimens the 

 bristles from tubercles on segment 2 are all reddish, with only a few black 

 bristles. Dorsal tubercles on segment 3 also bear some rust-red bristles 

 in some specimens. Medio-dorsal tubercles on segments 5 to 12, inclusive, 

 bear a small bunch of short black bristles. Tubercles on dorsum of seg- 

 ments 12 and 13 bear a few longer black bristles. In some specimens all 

 the dorsal tubercles bear a very few bristles of a dark rusty colour. 

 Lower halves of the stigmatal tubercles bear bright rust-red bristles. All 

 bristles below spiracles, including those from ventral tubercles, are bright 

 rust-red. Tubercle i. small, about one-fifth size of tubercle ii. ; tubercles 



