308 THE CANADIAN ENTOMOLOGIST. 



Seventh stage. — Head black, reddish at vertex; width, 2.5 mm. Body 

 as before, but the central lateral warts are brownish. Subventral hair 

 scarcely paler. 



Eighth stage. — Black, the warts brown ; hair largely black, but still 

 partly foxy-red. Abdominal feet dull crimson ; spiracles reddish. Width 

 of head, 3.4 mm. 



Ninth stage. — Hair all black, body sooty black, warts light-brown^ 

 spiracles white. Thoracic feet black, abdominal ones dull crimson. 

 Head black, labrum and antennae pale; width, 4.5 mm. When full fed 

 the larva hybernated until the folllowing June. It then spun a large 

 transparent double cocoon of soft silk, mixed with a few hairs, and the 

 moth emerged in Jul}'. 



Arachnis suffusa, Schaus. 



Egg. — Nearly spherical, but with flattened base, somewhat conoidal; 

 diameter, .6 mm. Colour fleshy yellowish with a pearly-bluish lustre. 

 Magnified 50 diameters the surface is covered with large shallow pits with 

 ill-defined edges, not sharp enough to form reticulations. 



Second (?) stage. — Head very pale yellowish, shining ; the cluster of 

 large ocelli black, mouth brown, a blackish shade at vertex ; width, .6 

 mm. Warts quite large, but concolorous and inconspicuous, the hair 

 bearing tubercles only black. Colour pale greenish-yellow, with a faint 

 white dorsal line. Cervical shield small, lens-shaped, brownish. Warts 

 ii. and iii. on joints 3, 4 and 12 tinged with dark orange. Hair fine, not 

 abundant, brownish. 



Third stage. — As before ; width of head, i mm. Traces of a black 

 subdorsal line. Hair more abundant, mostly short, white, but mixed 

 with a few very long hairs, some of which are black. Feet colourless. 



Fourth stage. — Yl&sid bilobed, brownish-yellow, ocelli black, mouth 

 brownish, jaws black ; width, 1.45 mm. Body rather sordid green, the 

 thoracic segments, and an area around wart iii. on joint 12, shaded with 

 orange ; feet and venter whitish. A narrow, defined, white dorsal, lateral 

 and substigmatal line, the lateial shaded above and below with black 

 dottings, and enclosing the warts of row iii. Warts large, concolorous, 

 the hair granules black. Hair long, stiff and straight, but fine, spinulose, 

 white and black intermixed. Some hairs 8 mm. long. Length of larva, 

 15 mm. Line of tracheae evident. 



