248 THE CANADIAN ENTOMOLOGIST. 



have web woven all around within. This is the sort of foresight these 

 larvae exerctse in providing for hibernation. 



Except the brief account of Abbot above referred to, I have found 

 nothing relating to the history of Catullus. Mr. Scudder, in Butterflies, 

 p. 9, fig. 14, gives a cut of the egg, which is not a good one, from an 

 example distorted perhaps by alcohol. Instead of rounded lobes at top, 

 this part is made up of illy-defined points, and the sides are not symme- 

 trical. Abbot figures the mature larva pretty well, the head excepted, 

 which is out of drawing, and discovers three whitish points on front face. 

 In nature these spots have no existence. The chrysahs is better. So far 

 as I am aware, this is all relating to Catullus hitherto published. 



PREPARATORY STAGES OF ICHTHYURA ORNATA. 



BY G. H. FRENCH, CARBONDALE, ILL. 



Egg. — Diameter .035 of an inch, about the same in height; blunt, 

 conical, the base flat ; smooth ; white, a dull red band round each a little 

 below the middle, which is pretty well defined on its lower edge, but the 

 upper is irregular, sometimes a small red speck on the apex. Duration 

 of this period 10 days. 



Young Larva. — Length .08 of an inch. General color grayish white, 

 a purplish red band across each of the following joints, 2, 5, 7 and 12, 

 with a faint row of the same along each side. Head jet black, broader 

 than the body; joint 12 a little elevated; thoracic feet black, the others 

 concolorous with the body; the body sparsely covered with white hairs 

 half the length of the larva. Duration of this period from 2 to 3 days. 



After the first moult. — Length, .15 of an inch; color much as before, 

 the red on joints 5 and 7 broader, the latter a little faint, the lateral stripes 

 more distinct, three faint stripes on the dorsum ; all these stripes of the 

 same color as in first stage. Duration of this period, 6 days. 



After the second moult. — Length, .25 of an inch. Of the same general 

 appearance as before, but some change in color. Head, jet black. Dor- 

 sum yellow, slightly green tinted, containing three fine reddish purple 

 stripes; jomts 5 and 1 2 slightly elevated and reddish purple, as also the 

 anal extremity and a narrow shield on joint 2. On the sides above the 

 stigmata a broad reddish purple band; below this the color is yellow, not 

 so bright as on the dorsum, mottled with purple, the purple hardly in lines 



