210 THE CANADIAN ENTOMOLOGIST. 



PREPARATORY STAGES OF LEPTARCTIA CALIFORNI/E 

 Walker, WITH NOTES ON THE GENUS. 



BY G, H. FRENCH, CARBONDALE, ILL. 



. . Egg. — Diameter .03 inch. Globular, smooth. Color whitish, with a 

 pearly lustre. Duration of this period here four days, in the mountains 

 of California six days. 



Young Larva. — Length .07 inch. Cylindrical, six rows of tubercles 

 from which spring hairs as long as the body. Color pale gray, head 

 black, hairs gray. Duration of this period four days. 



After I St Moult. — Length .15 inch. Cylindrical, eight rows of tuber- 

 cles, from which spring tufts of hair. Color dull pale horn yellow, a 

 whitish dorsal line ; tubercles black, the hairs gray ; head with the top 

 and sides black, clypeus whitish ; legs whitish. Before the close of the 

 preceding stage the body was slightly reddish purple. Duration of this 

 period three days. 



After 2nd Moult. ^ — Length .25 inch. — Head slightly bilobed ; color 

 smoky greenish black ; tubercles black, the hairs gray ; a dorsal creamy, 

 shghtly orange tinted line, and a line of lateral spots of the same color 

 situated between the second and third rows of tubercles, counting from 

 the dorsal line ; head pale horn yellow, the upper part black, a small 

 black spot on each side, and a small smoky spot in the centre of the front ; 

 feet concolorous with the body. Duration of this period seven days. 



After 3rd Moult. — Length .50 inch; shape as before. Color smoky 

 gray, rather dark ; dorsal stripe orange, an orange spot each side of the 

 second tubercle on each joint, counting from the dorsal line ; tubercles 

 black, each supporting a cluster of spreading brown hairs, those on joints 

 6 to 1 1 mostly about the length of the diameter of the body, those on the 

 other joints containing a few that are much longer, the anterior and a few 

 on joint 12 yellow, a long pencil of brown hairs on 13 ; head dark amber, 

 two blackish patches in front. Duration of this period six days. 



After 4th Moult. — Length .60 inch. Color gray, made so by a fine 

 mottling of black and sordid white ; the cluster of hairs from each tubercle 

 thick and spreading, the central hairs black, the outer hairs of the cluster 

 gray ; the dorsal line, lateral spots and head unchanged. 



Mature Larva. — Length .70 inch. There was scarcely any change 



