THE CANADIAN ENTOMOLOGIST, 149 



alternating cinereous and blackish shades, the former predominating ; one 

 distinct black median line, preceded by a blackish shade. Beneath 

 uniform cinereous gray, discal dots not prominent. 



Hab. Massachusetts. 



The beautiful cinereous and black coloration of this fine species will 

 at once separate it. 



NOTES ON THE LIFE HISTORY OF THE AMERICAN 



TIGER MOTH. 



BY ROBERT BUNKER, ROCHESTER, N.Y. 



Arctia Americana. 



Egg spherical, .04 inch in diameter, honey yellow, shiny and smooth 

 as polished glass ; laid in straight rows. Larva, when first hatched, one- 

 eighth of an inch long, head small and black, body dark brown clothed 

 with ten longitudinal rows of bunches of spreading hairs ; dark brown on 

 the sides, dark gray on the back. First moult somewhat increased in 

 size, color unchanged. Second moult y% inch long, dark sooty brown ; 

 hair dark brown on the sides, grayish brown above. Third moult ^ inch 

 long ; hair on the sides and fore part above, reddish brown ; light gray 

 on the back. 



Hybernated Sept. 16th. June 1st, 1875, fourth moult ; 1% inches 

 long ; body blackish brown, sides and fore part above clothed with ochre 

 yellow, back with long bluish gray hairs. Fifth moult — body two inches 

 long, velvety black, ornamented above with four rows of very long 

 bluish gray hairs (directed backwards) ; in front and on the sides with 

 dark yellowish-red hair, except the third row, which is made up of about 

 equal parts of red and gray hairs ; hairs immediately back of the head 

 short and directed forward. Spiracles yellowish white, with a waxy 

 lustre. Feet dark, snuff brown. 



Cocoon thin and loosely put together, with hair from the body 

 woven in. 



