142 THE CANADIAN ENTOMOLOGIST. 



and first lateral row one hair each ; from the second lateral row four hairs 

 each ; from the third or lower lateral row two hairs ; head sub-globose, 

 the surface rough but scarcely granulated, and thinly covered with short 

 black hairs ; color black. 



6. Parnassius Baldur Edw. Clatius Boisd., not Eversmann. 

 Egg. — A little larger than Smintheus, of same shape, and covered in 



same way with a crust of hexagons ; color pale coffee-brown. Laid on 

 species of Sedum. 



Young Larva. — Not distinguishable in shape, markings or color from 

 Smintheus. 



Mr. Mead brought me, in September, 1878, a large number of the 

 eggs of both these Parnassians, obtained by him from females shut up 

 with Sedum, while he was in Nevada. I kept the eggs in a cool place 

 until 29th December, and then brought a few of each species into a warm 

 room." On 1 6th January three larvaj of Smintheus came forth, eating a 

 round hole in the side of the egg. On 31st Jan'y one Baldur hatched. 

 I had fresh leaves of the same Sedum on which the eggs had been laid, 

 and there was an effort to gnaw the surface of these, but all the larvae died 

 in course of a few days. On 25th Feb'y I brought more of the eggs into 

 my room, and the weather having turned warm at that time, the larvae 

 quickly came. out. Most of them died very soon after, but a few eat of 

 the leaves and grew to double their original si/e, when one after another 

 died. It is possible that in nature the larvae do not emerge until the plant 

 is in bloom, and if I succeed in obtaining more eggs, I will retard them 

 till Sedum in flower can be had. Very little is known of the larvae of 

 species of Parnassius. 



7. Chionouas Ivallda Mead. Fig'd in But. N. A., Part viii., Vol 2. 



Egg. — Sub-conic, broadest at base, nearly as broad as high, rounded 

 at top ; marked by about 18 vertical ridges, the sides of which are irregu- 

 larly excavated; part of these terminate at about three-quarters the distance 

 from base to summit, and the remainder gradually sink to the surface; the 

 spaces between the ridges over the top being irregularly and shallowly 

 pitted. 



Young Larva. — Length .11 inch; stout anteriorly, tapering to last 

 segment, which ends in two blunt conical tails, each with a terminal white 

 bristle ; color at first soiled white, soon after greenish-white, striped longi 



