THE CANADIAN ENTOMOLOGIST. 175 



Genus Mkgaxyela. 

 The lavvce. of Af. major proved hard to rear, and only imperfect 

 specimens were obtained ; but the identification is nearly certain. 



The larvre are exposed feeders, gregarious on the young leaves of 

 hickory in May, conspicuously coloured yellow with black spots. Both 

 thoracic and abdominal feet are present, but are very small and hardly 

 functional, the larvte resting curled around a portion of leaf or stem, 

 and wriggling about with the help of a few inconspicuous threads of silk. 



Egg cuts irregular, somewhat distant, each a yellowish area on one 

 side of the midrib ; the upper epidermis partly separated and brownish 

 in an area of nearly 3 mm. ; lower epidermis a little swollen and yellowish 

 in this area. No distinct cut, remaining after the larvae hatch. 



Stage II. — Head black, with long antennae; width, .6 mm. Body 

 whitish yellow, with black tubercles as in the next stage. 



Stage III. — Much as in the next stages, the anal plate elevated and 

 black, but no black spot on joint 13, the upper two spots of third annulet 

 joined. Width of head, .8 mm. 



Stage IV. — Head, 1.2 mm. The same ; there is no black mark on 

 the cervical shield. 



Stage V. — Head, 1.8 mm. The same. 



Stage VI. — Head rounded, prominent, proportionately small; an- 

 tennae long, 5-jointed ; shining black, antennas and palpi white ringed in 

 the joints ; width, 2.2 mm. Body segments 4-annulate, the first a small 

 dorsal arc, the rest large, reaching subventral folds ; spiracle on second. 

 Colour, opaque shining yellow, a little clearer in the folds of the 

 annulets. A black cervical mark, truncate before, widened and trilobate 

 behind; thoracic feet, a large patch on joint 13 anteriorly, besides the 

 anal flap on its entire upper side, including the punctured, swollen, 

 suranal prominences and the tubercles, shining black. Tubercles rather 

 large, but slightly elevated, minutely piliferous ; four on second and third 

 annulets above spiracle, two on fourth annulet, lateral, and one on each 

 subventral fold. A faint dorsal, blackish shade between the uppermost 

 tubercles, sometimes distinct. Abdominal feet small on joints 6-12 and 

 13. Single brooded, no ultimate stage. The larvae leave the trees 

 by the end of May, enter deeply into the earth, and form fragile cells. 



