l8 tHE CANADIAN ENTOMOLOGIST. 



After last moult. — Head bilobed, slightly shagreened but shiny, and 

 furnished with a few hairs ; colour black, the upper third in front, reach- 

 ing to the upper half at the sides and posteriorly, orange-red ; width, 3.3 

 mm. Body enlarged a little dorsally at joint 12 ; cervical shield with 

 two rows of small warts, black, as are also the anal plate and feet. Warts 

 small, some minute, about 24 per segment, besides those on the venter 

 of the legless segments ; warts pale, bearing thin, long, whitish hairs (7 

 mm.) Body black, paler ventrally, a dorsal red line from joints 3 to 1 1 ; 

 two lateral and one substigmatal pale yellow lines, the upper one reaching 

 from joints 3 to 1 1, the lower two from joints 2 to 1 2, confluent posteriorly. 

 The substigmatal band is broader than the others and reaches narrowly 

 to the top of joint 13, sending a branch to the top of joint 12, to which 

 branch the two other lateral lines barely reach. Spiracles white. As the 

 stage advances the dorsal line fades to the colour of the others. 



Food-plant. — Wild cherry [Prufius serotina). 



Larvge from Rhinebeck, New York. 



AcRONVCTA iMPLETA, Walker. 



subochrea, Grote. 



Larva, about half grown. — -Head subquadrate, notched on vertex, the 

 lobes pointed anteriorly ; pale whitish, with eight pale brown spots : one 

 covering the eyes, one before apex of each lobe, and two smaller ones 

 respectively above and below and below the other two. Body deeply 

 incised between the segments. Feet normal. Warts arranged as in the 

 Arctiidae and Liparidae ; row i. on joints 5-12 in subdorsal space; row ii. 

 subdorsal ; row iii. superstigmatal ; row iv. obsolete ; rows v. and vi. in 

 the subventral space. All concolorous with the markings. Colour pale 

 translucent yellowish, with a white subdorsal line below warts ii. Warts 

 ii. and iii. on joint 2, and ii. on joint 3, brown. Brown patches dorsally 

 on joints 5, 6 and 9, and irregular ones on joints 11 and 12. Hairs 

 blackish, fine, not abundant. 



Food-plant. — Witch-hazel ( Hamamelis virginica). 



Larvte from Rhinebeck, New York. 



Peridroma incivis, Guen. 



Egg. — Irregularly spherical, the base flattened ; vertically striated, the 



