March, '08] ENTOMOLOGICAL NEWS. 117 



much like young span worms. Diameter hardly more than a 

 No. 40 sewing thread. 



Larvae hatched on May 3ist, moulted the first time on June 

 6th. Before second moult the larva becomes very dark, the lat- 

 ter half being practically black, the dorsum of the front half 

 being light brown. On the top side of the body, back of the 

 prolegs, is a yellow, longitudinal stripe. True feet and prolegs 

 black. Head small, not black. 



After second moult (June loth) the larva is nearly half an 

 inch long; a dark, almost black band along the side with a 

 broad middorsal and upper lateral yellow-brown or orange 

 stripe interrupted only at the hump, over the 3rd and 4th pro- 

 legs, by a cross black patch. Pro- and true legs straw color. 

 Head dark. 



Just after third moult (June I3th) the larva is about three- 

 quarters of an inch long, very light yellowish-brown with very 

 fine, longitudinal lighter lines and deeper yellow-brown at seg- 

 ment edges. The cross band over third pair of prolegs is red- 

 brown and marks the dorsal hump. True and prolegs light 

 brown. Head with black lateral dash to each side. 



Just after fourth moult (June I7th) the larva is light yellow- 

 ish gray with orange tubercles and short bristles. Lateral 

 fringe of setae. Humped over 2nd pair of prolegs and with 

 larger twin tubercles over the next to the end segment, form- 

 ing a hump-like ridge. Head light with lateral black stripe 

 and yellow lateral prominence. True and prolegs flesh color. 

 Length one and one-eighth inches. 



When fully grown, about two weeks after fifth moult, the 

 larva is over three inches long and marked much as above 

 stated. In the breeding jars the larva usually spins among the 

 willow leaves on the stems, not on the bottom of the jar as do 

 most Catocala larvas. The pupa is large and covered with a 

 whitish prunescence. 



During the past two summers, I have kept a close watch for 

 larvas of C. caret on a small willow tree in my back yard and 

 have been rewarded by finding a number of fine caterpillars. 

 Small "worms" were sometimes taken on the underside of dead 



